Your Right to a Written Reason When a Plan Turns You Down

Many network rejections say almost nothing: "We are unable to offer participation at this time." That sentence is not a reason, and for the largest public programs, the plan owes you one. Getting the reason in writing is often the first deliverable in a dispute, because every later step depends on knowing which decision the plan made.

Where does the right to a reason come from?

Three rules cover most providers who ask us about it:

Medicare Advantage. "If an MA organization declines to include a given provider or group of providers in its network, it must furnish written notice to the effected provider(s) of the reason for the decision" (42 CFR 422.205(a)). Coordinated care plans must also give physicians "written notice of participation decisions that are adverse to physicians" (42 CFR 422.202(a)(3)). CMS repeats the notice requirement in its Medicare Managed Care Manual, Chapter 6, section 60.1.
Medicaid managed care. "If an MCO, PIHP, or PAHP declines to include individual or groups of providers in its provider network, it must give the affected providers written notice of the reason for its decision" (42 CFR 438.12(a)(1)).
Texas PPO plans. An insurer "shall give a physician or health care provider who, on the person's initial application, is not designated as a preferred provider written reasons for denial of the designation" (Tex. Ins. Code 1301.051(c)).

Other commercial plans depend on state law and on the plan's accreditation and policies. Many credentialing policies require a reason in a credentialing denial letter; a Louisiana Medicaid plan's policy, for example, says its denial letter "includes the reason and information on the practitioner's right to view and/or correct erroneous information" (Louisiana Healthcare Connections, LA.CRED.01).

What counts as a real reason?

The regulations do not define how detailed the reason must be for a first-time applicant. Still, there is a useful benchmark. When a Medicare Advantage plan suspends or terminates a physician, the notice must state "the reasons for the action, including, if relevant, the standards and profiling data used to evaluate the physician and the numbers and mix of physicians needed by the MA organization" (42 CFR 422.202(d)(1)(i)). That is the level of specificity worth asking for.

A useful reason answers at least one of these:

Was this a credentialing decision or a network decision?
If credentialing, which criterion was not met, and what information did the plan rely on?
If network, for which specialty, which county or service area, and which product (HMO, PPO, Medicare Advantage, Medicaid)?
Was the file closed for missing information? Which item?

"Network adequacy has been met" is a reason, but a thin one. It invites the follow-up questions: met for which provider type, in which county, by what standard?

Why is the reason worth chasing?

Because it shapes everything after it:

It decides the bucket. A credentialing reason opens reconsideration and correction rights; a network reason points to adequacy evidence. See credentialing denial or network denial.
It fixes the plan's position. A plan that says in writing that its behavioral health network in your county is adequate has made a claim your evidence can test. See documenting an access gap.
It shows the regulator what happened. A state Medicaid agency or insurance department is far more likely to act on a dispute when the plan's own words are attached.
Its absence is itself a problem. For Medicare Advantage and Medicaid plans, a declined provider with no written reason has a straightforward compliance question to put to the plan.

How should you ask for the reason?

In writing, to the department that made the decision, and briefly. A request we prepare for a provider to sign usually includes:

the provider's name, NPI, specialty, practice address and the date and reference number of the plan's letter;
the product or line of business, if known;
a plain request for the written reason for the decision, citing 42 CFR 422.205(a) for Medicare Advantage, 42 CFR 438.12(a)(1) for Medicaid managed care, or Tex. Ins. Code 1301.051(c) for a Texas PPO;
a request for the plan's written participation criteria or application procedures (Texas PPO insurers must provide "information concerning the application process and qualification requirements" on request under 1301.054(c), and New York managed care insurers must disclose "written application procedures and minimum qualification requirements" on request under N.Y. Ins. Law 4803(a)(1));
if the decision was a credentialing one, a request to review the information the plan obtained, under the plan's practitioner rights policy.

Keep the tone factual. The aim is a clear written answer, not an argument. Send it in a way you can prove and calendar a follow-up.

Should you keep working while you wait?

Yes. A request for a reason does not usually stop any deadline the plan has already set. If the original letter mentions a reconsideration window, prepare that request in parallel. See reconsideration requests and their deadlines.

Can we prepare the request?

Our Network Rejection Review ($249, credited toward a dispute) includes the reason request and records request, drafted for your signature, plus a read of the plan type and the deadlines. You sign and send them; we track the response. We are not a law firm and do not give legal advice. If you want an opinion on what the plan's answer means for your legal rights, ask a healthcare attorney.

Common questions

Does a commercial insurance plan have to tell me why it rejected me?

It depends on the state and the plan. Texas requires written reasons from PPO insurers. Elsewhere, look at state law and the plan's credentialing policy, which often requires a reason in credentialing denial letters. Medicare Advantage and Medicaid plans must give one.

Is network adequacy has been met a valid reason?

It is a reason, but a thin one. Ask which provider type, county and product it refers to and what standard was used. A specific answer is what lets you test whether the network really is adequate where you practice.

What if the plan never answers my request?

Follow up in writing and keep proof of each request. For Medicare Advantage and Medicaid managed care plans, an unanswered request for a required written reason is a fact worth including in any later complaint to the state Medicaid agency or in a letter to the plan's compliance department.