Health care litigation · for providers
No-Fault Compliance Advisory for Providers
An insurer can refuse to pay on eligibility grounds for a foundational licensing failure or control of the practice by unlicensed people.
Under Mayzenberg (2025), alleged misconduct by a licensed provider who kept control, such as paying for referrals, is not by itself an eligibility ground unless the licence is suspended, revoked or annulled. Necessity, fee and other claim defenses remain.

The eligibility line
Can the insurer refuse payment because of how the practice is set up?
Eligibility is about the practice, not one bill. The regulation, 11 NYCRR 65-3.16(a)(12), bars reimbursement to a provider that fails a licensing requirement necessary to perform the service. In Government Employees Ins. Co. v Mayzenberg (decided November 24, 2025) the Court of Appeals adopted the Department of Financial Services’ reading of that rule. An allegation is not a finding: each row still has to be proved.
New York no-fault rules for health care providers as of October 12, 2026. This is general information, not advice on a particular claim; the dates on your own bills and letters decide which rule applies.
Who decides what
Three different decision-makers
Compliance problems surface in different places, and each has its own process. Knowing which one you are in tells you what can happen next.

- The insurer
- Asks for verification (65-3.5), may require an EUO, and pays or denies each bill. It can raise eligibility as a defense and can sue, including under RICO (no-fault RICO defense).
- The State
- The Board of Regents decides professional discipline. DFS, with Health and Education, sets procedures to remove a provider’s authorization to bill no-fault, with notice and an opportunity to be heard (Insurance Law 5109).
- The arbitrator or court
- Decides the disputed bills: whether a defense is proved, what is payable and the interest and fee that follow (no-fault arbitration, collections and litigation).
Practice review
What we look at with you
We review billing practices and claim files against these rules, and collect the bills in arbitration and court. Robert M. Bott, our Managing No-Fault Attorney, represents medical providers at insurers’ examinations under oath.
- Licences and control. Who holds the licences for each service billed, who owns the professional corporation, and who makes its decisions, including under management, lease or billing-company agreements.
- Bills and timing. Proof of claim within 45 days of each service (65-1.1), assignments (65-3.11), fee-schedule charges and no balance billing (Insurance Law 5108). The document-by-document list is on our healthcare providers page.
- Requests from insurers. Verification letters and replies, and readiness for an examination under oath.
- Where the money is stuck. Overdue and denied bills, and which route fits (see health care litigation). Our firm represents numerous healthcare providers in the collection of no-fault claims through arbitration and civil litigation (our firm).
Questions
Compliance questions from provider practices
Four kinds. Eligibility: a provider that fails a licensing requirement needed to perform the service, or a professional corporation actually controlled by unlicensed people, is not eligible for reimbursement. Timing: proof of claim later than 45 days after the service without a reasonable justification. Paperwork: no valid assignment, or requested verification in your control neither supplied nor answered with a written reasonable justification within 120 days. Amount: charges above the fee schedule, absent unusual procedures or unique circumstances. Medical necessity is decided claim by claim on the records.
No practice can stop an insurer from making an allegation. What helps is a practice that is what its papers say it is: licensed professionals who actually own and control it, records that match each bill, bills sent on time at fee-schedule rates, and prompt, truthful answers to verification and EUO requests. Do not alter or back-date records. If an insurer alleges fraud, the allegation still has to be proved.
For each claim: the assignment, each bill with proof of the date it was sent, the treatment records behind each charge, verification requests with your dated replies, EUO and examination notices and transcripts, and every denial with the date received. For the practice: licences, the corporate and ownership records, and any management, lease or billing-company agreements. Our healthcare providers page lists the claim file row by row.
First identify who is asking and under what rule. For an insurer’s verification request, supply what is in your control or possession, or a written reasonable justification, within 120 days of the first request; that rule does not cover NF forms, EUOs or medical examinations, which have their own rules. A request from a State agency or law enforcement is a different matter; get advice before responding. In every case, keep a copy of what was asked, what you sent and when.
Not as a general audit. The no-fault endorsement lets an insurer require EUOs “as may reasonably be required”, and the regulation treats an EUO as verification to establish proof of claim: it must rest on objective standards with specific objective justification, at a reasonably convenient time and place. Questions about ownership, control and billing can still be relevant to eligibility. Our EUO page explains the sequence and how to prepare.
Written proof of claim for health services is due no later than 45 days after the date the services are rendered, not 45 days from the first visit. A late bill can still be paid if written proof gives a clear and reasonable justification, and a denial for lateness must tell you that. The insurer’s 30 days to pay or deny generally run once it has the claim and all relevant verification it properly requested.
No practice can guarantee that an insurer or arbitrator will agree. Necessity is decided on the records for each service, so the record should show why the service was needed when it was given: the findings, the plan and the response to treatment. If a denial relies on an IME or peer review report, ask for the report in writing; the insurer must release it on request.
Not under the eligibility regulation alone. In Government Employees Ins. Co. v Mayzenberg (2025), the Court of Appeals held that an insurer may not deny a licensed provider’s claims for alleged professional misconduct, such as paying for referrals, unless it amounts to surrendering control to unlicensed people or the licence is suspended, revoked or annulled. Insurers can still contest medical necessity and sue for damages, and referral payments can carry professional consequences.
Retention periods for treatment records come from your profession’s own record-keeping rules, which this page does not state. For no-fault purposes, keep the full claim file at least until every bill on it is paid or finally resolved, including any arbitration, master arbitration review or court action, and keep the practice’s licensing and ownership records for as long as claims from that period could be questioned.
Find out who is investigating and what they asked for. An insurer’s inquiry runs through verification, EUOs, denials and sometimes a civil lawsuit. A State process to remove a provider’s authorization to bill no-fault must give notice and an opportunity to be heard under Insurance Law 5109. A criminal investigation needs criminal defense counsel. We can review how the inquiry affects your no-fault claims.
It settled the reach of 11 NYCRR 65-3.16(a)(12). The Court of Appeals agreed with DFS that the rule covers foundational licensing requirements needed to perform the service, and control by unlicensed people, but not professional-misconduct claims against a properly licensed provider short of that. It did not change necessity defenses, fee-schedule limits or the insurer’s right to sue. The published slip opinion was marked subject to revision.
Sources: Government Employees Ins. Co. v Mayzenberg, 2025 NY Slip Op 06527; Insurance Law 5102, 5108, 5109; 11 NYCRR 65-1.1, 65-3.3, 65-3.5, 65-3.8, 65-3.11, 65-3.16.
Review the practice before an insurer does
Tell us how the practice is owned and run and where bills are stalling. We will go through the eligibility line and the billing rules with you. The consultation is free.
What to bring
- Licences for each service billed
- Corporate and ownership records
- Management, lease or billing agreements
- Recent denials and verification letters
Photo credits: New York State Education Building by Beyond My Ken, CC BY-SA 4.0, cropped and resized.
