Medical Malpractice Insurance When You Buy a Practice

A practice acquisition can change the balance sheet overnight. It does not automatically move patient responsibility, clinical authority, records, privileges, payer status, contracts, or insurance. The buyer and seller need to establish those paths before closing, not discover them when a pathology result or claim notice arrives.

Start with day zero. For every patient flow, open clinical item, clinician, entity, record, site, contract, license, payer, and policy, ask: who is responsible before closing, who is responsible after closing, and what document proves it? The purchase agreement may express what parties intend to transfer or retain. It does not by itself decide all entity, regulatory, contract, liability, or coverage consequences.

Map what is changing without guessing at the transaction

Identify whether the arrangement involves assets, equity or ownership interests, an operating or management arrangement, real estate, equipment, staff, a patient panel, or several of these. Build an operational map for each professional entity and trade name; record custodian; lease and property owner; equipment, drug, and software owner; clinicians; contracts; and effective dates.

Do not infer a transfer from the practice name, office, equipment, referral pattern, EHR, payer number, or telephone line. Check the purchase agreement, entity records, applicable licenses, contracts, and policy terms. The guide cannot decide whether liabilities transfer; the actual agreement, law, permissions, and insurance documents do that work.

Keep clinical judgment with the post-close medical practice

Price, financing, brand, lease, and vendor arrangements may change at closing. California's corporate-practice rules do not permit an unlicensed entity to take over professional decisions about diagnostic tests, referrals, treatment, patient volume, records, clinical staffing competency, patient-care coding and billing, or medical equipment and supplies.

Map who will make each decision on day zero. An MSO, investor, landlord, or equipment company may provide defined administrative or property services. For each decision the Board identifies, a California-licensed physician must retain ultimate responsibility for or approval of that decision. Do not reduce this question to a generic ownership slogan.

Transition patients and records before access changes

Build a live clinical-handoff register: pending pathology, laboratory and imaging results, referrals, scheduled procedures, procedure aftercare, medication monitoring and refills, portal and message pools, after-hours and call coverage, hospitalized patients, future appointments, forms, and adverse-event follow-up. Name an accepting clinician, backup, record location, patient communication, and closure condition for every item.

The Medical Board advises continuity measures when a practice closes or a physician departs, including record-access information and assistance with continued care. Apply that discipline to an acquisition without claiming a universal notice interval. A California physician and surgeon must maintain adequate and accurate service records for at least seven years after the last date of service, and patients have record-access rights. An EHR login is not a custody or access agreement. Determine the lawful record custodian, request route, authorized access, late-result workflow, and access needed for continuing treatment, administration, or defense, consistent with applicable privacy law and the parties' agreements.

Keep prior care and future care on separate policy maps

Map every clinician, entity, and service date against actual issued policy terms. Do not assume that stock, assets, name, office, or EHR transfer a policy or pick up old professional work.

For occurrence coverage, preserve the issued policies for the care period. For claims-made coverage, compare retroactive or prior-acts terms, reporting period, tail or ERP option, named insured and entity scope, limits, exclusions, and known-event terms. A transaction may allocate old work through old-policy reporting coverage, a seller tail, buyer prior acts, or another written arrangement. Those are possibilities, not automatic outcomes. An application or diligence response is not coverage.

Request the records required by the transaction and insurer: historical policies, declarations, loss-run contacts, open claims and notices, complaints, subpoenas, preservation holds, and the party able to receive carrier communication or produce records. Use observed patterns to identify clinical corrections. Do not assume the buyer controls settlement or defense merely because it bought the operation.

Verify people, sites, services, and agreements by actual role

For every clinician, record employer or contractor, clinical role and competence, privilege or facility status, applicable NP/PA practice documents, prescribing and call coverage, record access, and first or last date. Retained staff do not simply continue under a new practice because they work in the same building. A PA's physician supervision, practice agreement, and competency requirements remain separate questions.

Identify service and site conditions before the activity continues. If the acquired practice performs outpatient procedures using anesthesia, other than local or peripheral blocks, at doses that have the probability of placing a patient at risk of loss of life-preserving protective reflexes, apply California's accredited, licensed, or certified setting rule. If the acquisition includes a licensed pharmacy, pharmacy ownership-change rules can apply; do not extend them to an ordinary practice drug cabinet. Imaging, mobile services, laboratories, and other regulated operations each need their own conditional review.

Do not assume a lease, payer network, vendor discount, credential, facility contract, professional-liability policy, or referral pattern assigns automatically. Read its assignment, consent, termination, credentialing, and effective-date terms.

Keep Medicare and payer work in its own lane

If an enrolled group or clinician participates in Original Medicare, identify the enrolled supplier or entity, transaction type, managing-control or ownership change, practice location, reassignment, CMS form or PECOS process, MAC direction, and effective date. For enrolled physician groups, CMS generally requires reporting ownership, managing-interest, and practice-location changes within 30 days and other changes within 90 days; verify the transaction classification and instructions with the MAC. A practice acquisition is not automatically a Medicare change of ownership, and Medicare enrollment does not establish clinical authority, commercial-payer status, or insurance.

Run commercial payer, facility, pharmacy, and vendor approvals in parallel. Do not bill or present a service as available until the requirements that actually govern it have been confirmed.

Ask insurance questions after the responsibility map is complete

Ask the carrier or broker whether the issued terms apply to the post-close entities and insured people, services, sites, clinicians, prior acts, and transaction. Separately review the policies that may respond to professional care, property, data, employees, autos, premises, and interruption. The coverage grant, definitions, named insureds, change-of-control or assignment language, exclusions, limits, notices, and contracts control.

A certificate or diligence response is not a complete coverage analysis. Retain the actual response, but compare it to the issued form and the post-close operation at first renewal.

The closing test is practical. If a pre-close patient has a complication tomorrow, can the team name the current clinical recipient, authorized record-access route, entity, location, contract, insurer notice route, and policy terms that may apply? If not, the transaction has not safely closed.

An acquisition changes operational responsibility, not just a balance sheet.