Professional Malpractice Demand Letters

Published: December 4, 2025 • Demand Letters
Professional Malpractice Demand Letters | Attorney, Medical, CPA Negligence
Professional Malpractice Demand Letters

Attorney, Medical, Accountant & Financial Advisor Negligence Claims

Professional Malpractice Overview
⚖️ What Is Professional Malpractice: Professional negligence occurs when a licensed professional (attorney, doctor, accountant, financial advisor, etc.) breaches the standard of care owed to a client/patient, causing measurable harm. These claims are distinct from ordinary negligence due to specialized standards and procedural requirements.
General Elements (All Professions)

To establish professional malpractice, claimant must prove:

  1. Duty: Professional-client relationship existed
  2. Breach: Professional failed to meet the standard of care
  3. Causation: Breach caused the harm (often “case within a case” for legal malpractice)
  4. Damages: Measurable economic or physical harm resulted
Standard of Care by Profession
Profession Standard of Care Authority
Attorneys Knowledge and skill ordinarily possessed by members of legal profession under similar circumstances Common law; Rules of Professional Conduct
Physicians Knowledge, skill, and care ordinarily possessed and exercised by members of medical profession under similar circumstances (locality rule abolished in CA) Civ. Code § 3333.1; CACI jury instructions
Accountants/CPAs GAAP (Generally Accepted Accounting Principles) and GAAS (Generally Accepted Auditing Standards); care and skill ordinarily exercised by accountants Professional standards; state licensing laws
Financial Advisors Suitability standard (broker-dealers) or fiduciary duty (RIAs); duty to recommend suitable investments based on client profile FINRA rules; Investment Advisers Act; state securities laws
Statute of Limitations
Profession (California) Statute of Limitations Authority
Attorney malpractice 1 year from discovery, max 4 years from wrongful act (tolled during continuous representation) CCP § 340.6
Medical malpractice 1 year from discovery or 3 years from injury, whichever occurs first CCP § 340.5
Accountant negligence 2 years from discovery, max 4 years from wrongful act CCP § 339(1) (professional negligence)
Investment advisor Varies; FINRA arbitration has 6-year eligibility rule from occurrence FINRA Rule 12206
🚨 Short Deadlines: Professional malpractice statutes are SHORT and strictly enforced. Legal malpractice has 1-year discovery period. If you suspect malpractice, consult new counsel immediately to preserve your rights.
Malpractice vs. Bad Result

Important distinction:

  • Not malpractice: Professional judgment calls, tactical decisions within reasonable bounds, unfavorable outcomes despite competent representation
  • Malpractice: Missing filing deadlines, failure to know basic law, conflicts of interest, abandonment, failure to obtain informed consent, obvious errors no reasonable professional would make
Parallel Licensing Board Complaints

In addition to civil malpractice claims, clients/patients may file complaints with:

  • State Bar: Attorney discipline (disbarment, suspension, probation)
  • Medical Board: Physician discipline (license revocation, practice restrictions)
  • Board of Accountancy: CPA license discipline
  • FINRA / SEC: Investment advisor/broker-dealer sanctions

These are separate proceedings with different standards (protection of public vs. compensation for harm), but often run parallel to civil claims.

Attorney Malpractice Demand Letters
Elements of Legal Malpractice (California)
  • Duty: Attorney-client relationship (engagement letter, payment, reliance)
  • Breach: Failure to use ordinary care, skill, and knowledge common to attorneys
  • Causation (“case within a case”): But for attorney’s negligence, client would have obtained more favorable result
  • Damages: Actual losses caused by malpractice (not speculative)
Common Attorney Malpractice Scenarios
Type Example Causation Analysis
Statute of limitations blown Failed to file lawsuit before SOL expired Underlying claim would have succeeded (prove “case within case”)
Conflict of interest Represented both sides of transaction without informed consent Show harm from conflict (unfavorable terms, breach of confidentiality)
Abandonment / failure to communicate Stopped responding, missed court dates, failed to inform of settlement offers Missed settlement opportunity, default judgment, dismissal
Inadequate investigation Failed to discover key evidence, didn’t interview witnesses Evidence would have changed outcome
Failure to know basic law Missed obvious legal argument, wrong choice of law, misadvised on core issue Correct advice would have led to different result
Evidence Checklist
  • Complete file: All pleadings, correspondence, emails, billing records, file notes
  • Engagement letter: Scope of representation, fee agreement
  • Underlying judgment/settlement: Result of case attorney handled
  • New attorney evaluation: Opinion from new counsel on what should have been done
  • Expert declaration: Standard-of-care expert opining on breach and causation
  • Timeline: Statute of limitations analysis, key dates attorney missed
  • Damages calculation: What client lost vs. what they would have recovered
Demand Letter Strategy

Key components:

  • Chronology: Timeline of representation and specific errors
  • Breach identification: Cite specific professional conduct rules violated (if applicable)
  • “Case within case”: Explain how underlying matter would have succeeded but for attorney’s negligence
  • Damages itemization: What client lost (judgment against them, settlement they would have received, lost business opportunity)
  • Coverage notice: Request attorney forward letter to malpractice carrier; set deadline for coverage response
  • State Bar reference: Mention potential State Bar complaint (carefully – not as threat but as parallel option)
⚠️ Tolling During Representation: CCP § 340.6(a)(2) tolls SOL during continued representation. But don’t delay – once representation ends, 1-year clock starts. Get new counsel to evaluate case immediately upon terminating bad attorney.
Settlement Considerations

Attorneys settle when:

  • Obvious malpractice (missed SOL, abandoned client, conflict documented)
  • Malpractice carrier recommends settlement (carrier controls defense in most policies)
  • Client sympathetic (elderly, unsophisticated, serious harm)
  • Trial risk high (jury sympathetic to injured clients over attorneys)

Attorneys defend when:

  • Judgment call, not error (tactical decision within reasonable bounds)
  • Client contributory conduct (client didn’t disclose key facts, failed to cooperate)
  • Underlying case was weak (can’t prove “case within case”)
  • Damages speculative or inflated
Medical Malpractice Demand Letters
California Medical Malpractice Framework

MICRA (Medical Injury Compensation Reform Act):

  • Noneconomic damages cap: Historically $250k (Civ. Code § 3333.2); increased by 2023 amendments (Prop 213) to $350k (rising incrementally to $750k by 2033 for non-wrongful death)
  • Periodic payments: Future damages over $50k may be paid periodically (CCP § 667.7)
  • Statute of limitations: 1 year from discovery or 3 years from injury (CCP § 340.5)
  • Attorney fees sliding scale: Limits on contingency fees (Bus. & Prof. Code § 6146)
Pre-Suit Notice Requirement (CCP § 364)
🚨 90-Day Notice Required: Before filing medical malpractice lawsuit in California, plaintiff must serve 90-day notice of intent to sue on all defendants. Notice must state legal basis of claim and type of loss/injury. No specific form required, but must be in writing and properly served.

Purpose: Give healthcare providers opportunity to evaluate claim and potentially settle pre-litigation.

What to include:

  • Identity of plaintiff and all known defendants (physicians, hospital, medical group)
  • Legal basis: professional negligence, lack of informed consent, etc.
  • General nature of injuries and damages
  • Statement that this is § 364 notice of intent to commence action
Common Medical Malpractice Scenarios
Type Example
Surgical errors Wrong-site surgery, retained foreign object, anesthesia errors, nerve damage
Diagnostic errors Failure to diagnose cancer, misread imaging, failure to order appropriate tests
Medication errors Wrong medication, wrong dosage, drug interactions, allergic reactions
Birth injuries Failure to perform timely C-section, improper use of forceps, failure to monitor fetal distress
Lack of informed consent Failed to disclose material risks of procedure; patient would not have consented if informed
Evidence Requirements
  • Medical records: Complete records from all providers (hospital, physicians, specialists)
  • Expert declaration: Board-certified physician in same specialty opining on standard of care, breach, and causation
  • Radiology/pathology: Images, slides, test results
  • Informed consent forms: What risks were disclosed (or not disclosed)
  • Medical literature: Standards, guidelines, protocols supporting expert’s opinion
  • Damages documentation: Medical bills, future care estimates, wage loss, life care plan for catastrophic injuries
Demand Letter vs. § 364 Notice

Two separate documents:

  • § 364 Notice: Statutory pre-suit requirement; brief, general description of claim
  • Demand letter: Detailed settlement demand (may be sent simultaneously or after 90-day notice period); includes medical chronology, expert opinions, damages breakdown, settlement demand

Many attorneys combine these into single document serving both functions.

Settlement Strategy

Medical malpractice insurers settle when:

  • Clear liability (obvious error, peer review identified substandard care)
  • Catastrophic injuries (permanent disability, death – high jury verdict risk)
  • Sympathetic plaintiff (child, young parent, permanent disfigurement)
  • Strong expert opinions from well-credentialed physicians
  • Physician-defendant admits error or shows remorse

Insurers defend when:

  • Judgment call within standard of care (reasonable physicians differ on treatment approach)
  • Poor patient outcome despite appropriate care (bad result ≠ malpractice)
  • Informed consent obtained (patient knew and accepted risks)
  • Plaintiff contributory conduct (failed to follow instructions, delayed seeking care)
  • Pre-existing conditions caused or contributed to injury
Accountant & Financial Advisor Malpractice
Accountant/CPA Malpractice

Duty sources:

  • Engagement letter: Scope of services (tax prep, audit, compilation, consulting)
  • GAAP / GAAS: Professional accounting and auditing standards
  • Tax code and regulations: For tax preparation services
  • Professional standards: AICPA Code of Professional Conduct

Common breaches:

  • Missed tax deadlines: Failed to file returns, missed extensions, late estimated payments
  • Erroneous tax positions: Aggressive positions without disclosure, failure to advise on tax consequences
  • Audit failures: Failed to detect material misstatements, inadequate sampling, independence violations
  • Missed deductions/credits: Failed to claim tax benefits client was entitled to
  • Disclosure failures: Didn’t advise client of FBAR, foreign account reporting, or other compliance requirements

Damages:

  • IRS penalties and interest
  • Additional tax liability from erroneous advice
  • Lost tax benefits (missed deductions, credits)
  • Professional fees to correct errors
  • Business losses from bad financial advice
Investment Advisor / Financial Advisor Malpractice

Regulatory framework:

  • Broker-dealers: FINRA member firms; suitability standard (must recommend suitable investments)
  • Registered Investment Advisors (RIAs): SEC or state-registered; fiduciary duty (act in client’s best interest)
  • Dual registrants: Both broker-dealer rep and RIA; duty depends on capacity

Common claims:

Claim Type Description
Unsuitability Recommended investments inappropriate for client’s age, risk tolerance, investment objectives, financial situation
Breach of fiduciary duty Acted in own interest (excessive commissions, proprietary products) rather than client’s best interest
Misrepresentation / omission Lied about investment risks, failed to disclose material facts, inflated performance
Churning Excessive trading to generate commissions; not in client’s interest
Unauthorized trading Executed trades without client authorization or exceeded discretionary authority
Concentration / over-concentration Too much of portfolio in single stock, sector, or asset class (lack of diversification)
FINRA Arbitration

Most customer agreements require arbitration:

  • Forum: FINRA Dispute Resolution (not court litigation)
  • Eligibility: Claim must be filed within 6 years of occurrence (FINRA Rule 12206)
  • Process: File statement of claim → respondent answer → discovery → hearing → award
  • Timeline: Typically 12-18 months from filing to award
  • Advantages: Industry-expert arbitrators, faster than court, simplified discovery
  • Disadvantages: Limited appeal rights, filing fees ($1,425-$3,350 depending on claim size)
Demand Letter Strategy (Financial Advisors)

Pre-arbitration demand should:

  • Identify unsuitable recommendations with specificity (dates, securities, amounts)
  • Explain why investments were unsuitable (client profile vs. investment risk)
  • Document losses attributable to misconduct (not market losses)
  • Cite FINRA rules violated (Rule 2111 suitability, Rule 2010 high standards)
  • Reference potential FINRA complaint and arbitration if not resolved
  • Request firm’s compliance and legal departments review

Evidence checklist:

  • Account statements showing trades and losses
  • Trade confirmations
  • New account forms / investor profile documents
  • Emails and notes of advisor recommendations
  • Marketing materials and disclosures (or lack thereof)
  • Expert report on suitability and damages
Sample Professional Malpractice Demand Letters
Sample 1: Attorney Malpractice – Missed Statute of Limitations
[Your Name] [Address] [Email / Phone] [Date] [Attorney Name] [Law Firm] [Address] Via Certified Mail & Email Re: Legal Malpractice Claim – Missed Statute of Limitations Dear [Attorney Name]: This letter constitutes formal notice of a legal malpractice claim arising from your representation of me in [describe underlying matter, e.g., “personal injury matter arising from auto accident on January 15, 2022”]. REPRESENTATION: I retained you on [date] via engagement letter to represent me in [personal injury / contract dispute / etc.] against [Defendant]. You agreed to handle the matter on a [contingency fee / hourly / flat fee] basis. NEGLIGENCE: You failed to file a lawsuit before the statute of limitations expired on [date], thereby permanently barring my claim. Specifically: • The accident occurred on [date] • California’s 2-year personal injury SOL expired on [date] • You filed the complaint on [date] – [X days] after the deadline • The defendant moved to dismiss based on statute of limitations • The court granted the motion and dismissed my case with prejudice on [date] This failure constitutes professional negligence. Any competent attorney would have calendared the SOL deadline and filed well in advance. You had ample time to investigate, draft pleadings, and file timely. YOUR EMAILS/COMMUNICATIONS: [If applicable: “Your emails to me on [dates] indicated you were aware of the deadline but repeatedly reassured me the case would be filed on time.”] CASE WITHIN A CASE: But for your negligence, I would have successfully pursued my claim against [Defendant]. The underlying case had strong liability and damages: Liability: • [Defendant] ran red light (police report confirms) • Multiple witnesses corroborate fault • Traffic camera footage (obtained before your involvement) shows clear violation Damages: • Medical expenses: $[amount] • Lost wages: $[amount] • Pain and suffering: $[amount] • Total value: $[amount] [Attach: New counsel’s evaluation of underlying case, expert opinion on liability and damages] Based on similar verdicts and the strength of evidence, the underlying case had a settlement value of $[amount] to $[amount], with trial value potentially higher. DAMAGES: As a direct result of your malpractice, I have lost the ability to recover these damages. My damages from your negligence are: • Lost settlement/judgment: $[amount] • Emotional distress from losing valid claim • Fees paid to you: $[amount if hourly or flat fee] Total: $[amount] MALPRACTICE INSURANCE: Please immediately forward this letter to your professional liability carrier and request coverage counsel be assigned. I expect a response from your carrier within 30 days. Provide me with: • Name and contact information of your malpractice carrier • Policy number and coverage limits • Name of assigned coverage counsel DEMAND: I demand payment of $[amount] in full settlement of this claim. If your carrier does not respond within 30 days, I will: • File legal malpractice lawsuit in superior court • Seek damages as outlined above plus interest and costs • File complaint with the State Bar of California regarding your conduct I prefer to resolve this matter through your insurance carrier without litigation. However, I will pursue all available remedies if necessary. Please confirm receipt and provide carrier information within 7 days. Sincerely, [Your Signature] [Your Name] Enclosures: • Engagement letter • Court dismissal order • New attorney evaluation of underlying case • Medical records and bills (underlying injury) • Police report (underlying accident)
Sample 2: Medical Malpractice – Surgical Error
[Patient Name] [Address] [Date] [Physician Name, M.D.] [Medical Group / Hospital] [Address] Via Certified Mail Re: Notice of Intent to Commence Action for Professional Negligence (CCP § 364) Dear Dr. [Name]: This letter constitutes notice of my intent to commence legal action against you for professional negligence pursuant to California Code of Civil Procedure § 364. PATIENT INFORMATION: Patient: [Full Name] Date of Birth: [DOB] Dates of Treatment: [Date range] LEGAL BASIS OF CLAIM: Professional negligence (medical malpractice) arising from surgical errors during [procedure name] performed on [date] at [Hospital Name]. FACTUAL BASIS: On [date], you performed [procedure name] to treat my [condition]. During the surgery, you negligently: • [Specific error: “severed the [nerve/artery/structure] causing permanent [injury]”] • Failed to recognize the injury intraoperatively • Failed to take corrective action when injury was discovered post-operatively Standard of Care: The applicable standard of care for [specialty] physicians performing [procedure] requires [describe what should have been done]. Your deviation from this standard included: • [Failure to use proper surgical technique] • [Inadequate pre-operative planning / imaging review] • [Failure to obtain informed consent for specific risks] Expert Opinion: [Dr. Expert Name], a board-certified [specialty] surgeon, has reviewed the medical records and opines that your care fell below the standard and directly caused my injuries. (Expert declaration attached) INJURIES AND DAMAGES: As a direct result of your negligence, I suffered: Physical Injuries: • [Permanent nerve damage causing loss of function in left hand] • [Chronic pain requiring ongoing pain management] • [Three additional corrective surgeries] • [Permanent partial disability] Economic Damages: • Past medical expenses: $[amount] • Future medical care (life care plan): $[amount] • Lost wages (6 months off work): $[amount] • Diminished earning capacity: $[amount] • Total economic damages: $[amount] Non-Economic Damages: • Pain and suffering • Loss of enjoyment of life • Emotional distress • Permanent disfigurement SETTLEMENT DEMAND: Before incurring the substantial costs of litigation, I am willing to discuss settlement. My demand is $[amount], which reflects the full extent of my economic and non-economic damages. Please forward this notice to your medical malpractice carrier immediately. I request that you or your carrier contact me within 30 days to discuss resolution. If we cannot reach settlement, I will file a complaint in superior court after the 90-day notice period expires. INSURANCE INFORMATION REQUESTED: Please provide: • Name and contact information of your malpractice carrier • Policy limits • Claims adjuster or defense counsel assigned Sincerely, [Your Signature] [Your Name] CC: [Hospital Risk Management] Enclosures: • Expert declaration of Dr. [Name] • Medical records (surgery, post-op, subsequent treatment) • Medical bills • Wage loss documentation
Sample 3: Accountant Malpractice – Tax Penalty
[Your Name / Business Name] [Address] [Date] [CPA Name] [Accounting Firm] [Address] Re: Accounting Malpractice – Failure to File Timely Tax Returns Dear [CPA Name]: I am writing regarding professional negligence in your handling of my [business / personal] tax matters for tax year [year]. ENGAGEMENT: I retained you in [month/year] to prepare and file my [business tax returns / personal returns including Schedule C]. Per our engagement letter dated [date], you agreed to prepare and file all required federal and state tax returns. NEGLIGENCE: You failed to file my tax returns by the applicable deadlines, resulting in substantial penalties and interest: • Federal tax return (Form 1120 / 1040) due: [date] • You filed return on: [date] – [X months] late • California tax return due: [date] • You filed on: [date] – [X months] late I provided you with all necessary documentation by [date], well in advance of deadlines. You repeatedly assured me the returns would be filed timely but failed to do so. CONSEQUENCES: Your failure to file timely caused: • IRS late-filing penalty: $[amount] (IRC § 6651) • IRS late-payment penalty: $[amount] • IRS interest: $[amount] • California FTB penalties: $[amount] • California interest: $[amount] • Total penalties and interest: $[amount] These penalties were entirely avoidable. Had you filed timely (or filed extensions if you needed more time), I would have incurred no penalties. ADDITIONAL ERRORS: In addition to late filing, the returns you eventually prepared contained errors: • [Missed depreciation deductions totaling $[amount]] • [Failed to advise on Section 179 election] • [Incorrectly calculated self-employment tax] These errors resulted in overpayment of tax of approximately $[amount]. I had to hire [new CPA firm] to file amended returns to correct your errors, costing an additional $[amount] in professional fees. DAMAGES: • IRS and FTB penalties and interest: $[amount] • Overpaid tax (before amendment): $[amount] • New CPA fees to correct errors: $[amount] • Total damages: $[amount] PROFESSIONAL STANDARDS: Your conduct violated basic professional standards for CPAs, including: • Competence and due professional care (AICPA Code) • Compliance with tax filing deadlines • Adequate review of returns before filing DEMAND: I demand reimbursement of $[amount] representing all damages caused by your negligence. Please forward this letter to your professional liability carrier and have them contact me within 14 days. If I do not receive a satisfactory response, I will file a lawsuit for professional negligence and also file a complaint with the California Board of Accountancy. Sincerely, [Your Signature] [Your Name] Enclosures: • IRS penalty notices • FTB penalty notices • Engagement letter • Documentation showing timely provision of tax info to you • Amended returns prepared by new CPA
For Professionals: Responding To Malpractice Demands
Immediate Response Steps (All Professions)
🚨 Critical First Step: Notify your professional liability carrier IMMEDIATELY. Most policies require “prompt notice” and late notice can result in coverage denial. Do this BEFORE responding to the claimant.

Upon receiving demand letter:

  • Stop work: If still representing client, consider withdrawal (avoid deepening damages)
  • Preserve file: Implement litigation hold on all documents, emails, notes, billing records
  • Notify insurer: Call claims department same day; follow up with written notice and copy of demand letter
  • Don’t respond directly (yet): Wait for carrier to assign defense counsel
  • Don’t destroy or alter records: Spoliation of evidence invites sanctions and coverage denial
  • Don’t communicate with claimant: All communications through counsel once assigned
Insurance Coverage Issues

Professional liability policies typically cover:

  • Professional negligence and errors & omissions
  • Defense costs (usually outside policy limits)
  • Settlements and judgments up to policy limits

Common exclusions:

  • Intentional misconduct, fraud, criminal acts
  • Claims arising before policy inception (prior acts exclusion)
  • Punitive damages (in some states)
  • Claims not reported during policy period (claims-made policies)

Notice requirements:

  • Provide: demand letter, relevant file materials, chronology of representation
  • Cooperate with carrier investigation
  • Don’t admit liability or settle without carrier consent
Evaluating The Claim

Questions to ask (with defense counsel):

  • Statute of limitations: Is claim timely? (Legal mal: 1 year from discovery; Medical: 1-3 years; Accounting: 2-4 years)
  • Causation: Can claimant prove “case within case” (for legal mal) or that error caused harm?
  • Damages: Are claimed damages accurately attributed to alleged malpractice vs other factors?
  • Standard of care: Was this truly breach or reasonable professional judgment?
  • Contributory conduct: Did client fail to disclose facts, not follow advice, or cause own harm?
Settlement vs. Defense Decision
Settle When Defend When
Clear error (missed deadline, obvious mistake) Judgment call within reasonable bounds
High damages, sympathetic claimant Weak causation (can’t prove harm from alleged error)
Defense costs exceed settlement value Frivolous claim, client misconduct significant
Risk of excess verdict above policy limits Strong defenses, claim likely to fail
Carrier recommends settlement Policy limits adequate, willing to risk trial
Licensing Board Parallel Proceedings

Expect parallel board complaint:

  • Many clients file both civil malpractice claim AND licensing board complaint
  • Board complaint can result in discipline (suspension, probation, revocation)
  • Coordinate response: Don’t make inconsistent statements in civil and board proceedings
  • Board proceedings are public (harmful to reputation even if civil case settles confidentially)

Board defense strategy:

  • Retain board defense counsel (often separate from malpractice defense counsel)
  • Respond to board investigation requests promptly and professionally
  • Avoid emotional or defensive tone
  • Focus on patient/client care and professional standards, not legal liability
  • Consider remedial action (additional training, practice changes) to show responsibility
Response Letter Considerations

If carrier authorizes response before assigning counsel:

  • Keep it brief: Acknowledge receipt, state you’ve notified carrier, provide carrier contact info
  • Don’t argue merits: Save legal arguments for defense counsel
  • Don’t admit liability: Even apologies can be used against you (unless state has apology statute protection)
  • Don’t make offers: Settlement authority rests with carrier per policy terms

Sample brief response:

Dear [Claimant]: I received your letter dated [date] regarding [matter]. I have forwarded your letter to my professional liability carrier: [Carrier Name] Claims Department [Address] [Phone] Claim Number: [if assigned] Please direct all future communications to the carrier or to defense counsel once assigned. Sincerely, [Your Name]
Practice Management After Claim

Use malpractice claim as learning opportunity:

  • Review practice procedures: What systems failed? How to prevent recurrence?
  • Calendar systems: Redundant deadline tracking, automatic reminders
  • Engagement letters: Clear scope, limitations, client responsibilities
  • Communication: Document advice given, client decisions, declinations
  • Conflicts checks: Systematic screening before taking new matters
  • CLE / training: Address knowledge gaps revealed by claim

More from Terms.Law