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How to Vet a Doctor Before Your First Visit
Five free lookups to run before booking a new doctor - board certification, license history, NPI, Medicare data, and the network check.
Before your first appointment with a new doctor, you can verify their credentials, license history, and billing identity in about twenty minutes, for free, using public databases. This guide covers the administrative checks - the paper trail. It does not cover whether a particular doctor is the right clinical fit for you, which is a conversation for the visit itself and beyond the scope of a lookup.
Run the checks in this order. Each one takes a few minutes.
1. Board certification: Certification Matters
Board certification means a physician completed residency training in a specialty and passed that specialty board’s exams. It is separate from holding a medical license.
Where: certificationmatters.org, run by the American Board of Medical Specialties (ABMS). Free, no login. You search by last name - at least the first five letters - and the result shows whether the physician is certified by any of the 24 ABMS member boards, in which specialty or subspecialty, and whether the certification is current.
What to note: the certification status and the specialty. A physician can be licensed and practicing without board certification, and a certification can lapse. The lookup tells you which situation you are looking at; what weight to give it is your call.
Some osteopathic physicians are certified through AOA boards rather than ABMS boards, so an empty ABMS result is a prompt to check further, not a conclusion.
2. License and disciplinary history: DocInfo
Every practicing physician holds a license from a state medical board, and state boards discipline physicians for issues ranging from record-keeping violations to serious misconduct.
Where: docinfo.org, run by the Federation of State Medical Boards. Free. A search returns license history, education, specialty, practice locations, and - the important part - whether any state board has taken disciplinary action. If there is an action, DocInfo links you to the relevant state board’s site for the details.
What to note: whether the license is active in your state, and whether any disciplinary actions exist. If one does, read the actual board order on the state board’s website before drawing conclusions. Orders spell out what happened and what restrictions, if any, apply now. Your state medical board’s own lookup is also worth a direct visit, since it is the primary source.
3. Billing identity: the NPI Registry
Every provider who bills insurance has a 10-digit National Provider Identifier. The NPPES NPI Registry is the free CMS database of all of them.
Why bother: the NPI is how you make every other check precise. Two doctors can share a name; nobody shares an NPI. Look up the doctor, confirm the specialty listing and practice address match what you expect, and write the NPI down. You will use it in the network check below, and it is the identifier that makes an itemized bill traceable later.
4. Medicare data: Care Compare
Medicare Care Compare lists physicians and other clinicians enrolled in Medicare, along with practice locations and hospital affiliations. You do not need to be a Medicare beneficiary to use it.
What to note: the hospital affiliation. If this doctor ever admits you or refers you for a procedure, it will likely happen at an affiliated hospital. That has an administrative consequence: check whether that hospital is in your plan’s network too, not just the doctor. A doctor in network at a hospital out of network is a billing problem waiting to happen - the mechanics are covered in in-network vs. out-of-network.
5. What online reviews can and cannot tell you
Reviews are a real data source for a narrow set of questions. Read twenty of them and you will learn something reliable about:
- How long patients wait, and whether the office runs on time
- How hard it is to get an appointment or a callback
- Whether billing disputes come up repeatedly
- Front-desk behavior and how refill or paperwork requests are handled
Reviews cannot tell you much about clinical quality. The sample is small and self-selected, patients are not positioned to judge diagnostic accuracy, and a doctor with a demanding style can collect angry reviews while practicing well - or the reverse. Use reviews for what they measure: the operation of the office. Weight repeated, specific complaints over one-off rants.
The network check before you book
This is the step that protects your wallet, and the plan directory alone is not enough - directories go stale. Do both of these:
- Call the doctor’s office and ask whether they are in network for your exact plan and network name, as printed on your insurance card.
- Call your insurer and confirm the same thing from their side, using the NPI you wrote down in step 3.
Here is the script for the insurer call:
“I want to confirm a provider is in network before I book. Dr. [name], NPI [number], at [practice address]. Can you confirm this specific provider at this specific location is in network for my plan - not just the practice group? And can I have a reference number for this call?”
The reference number matters. If the insurer later processes the claim as out-of-network, a documented call where they confirmed network status is your best evidence in a dispute. More phone technique is in calling your insurance.
If the visit requires a referral under your plan, sort that before booking too - what a referral involves walks through it.
The twenty-minute checklist
| Check | Where | You are confirming |
|---|---|---|
| Board certification | certificationmatters.org | Certified, current, in which specialty |
| License and discipline | docinfo.org + state board | Active license, any board actions |
| Billing identity | npiregistry.cms.hhs.gov | Name, specialty, address, NPI |
| Medicare data | medicare.gov/care-compare | Locations, hospital affiliations |
| Network status | Office + insurer, with reference number | In network for your exact plan |
None of this tells you whether you will like the doctor. It tells you the credentials check out, the license is clean, and the visit will be billed in network - which is everything a database can tell you, and exactly the part most people skip.
Sources
- ABMS Certification Matters - board certification lookup
- FSMB DocInfo - physician licensure and disciplinary lookup
- CMS NPPES NPI Registry
- Medicare Care Compare
Figures and rules on this page are current as of August 31, 2026. Dollar limits and deadlines change - check the linked source before you rely on a number.
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