NPI number for physicians

Physicians get the NPI during or right after medical school, because residency programs, e-prescribing, Medicare enrollment and every payer need it. Residents apply with the Student taxonomy or their specialty; the number never changes.

Short answer: physicians need an NPI when a payer, platform or employer puts them on a claim. The NPI is free, takes minutes, and lasts for life. SimpleNPI files it for you for free, usually within 10 minutes, or you can apply yourself at NPPES. Check the free lookup first in case you already have one.

Who asks physicians for an NPI

Residency programs and hospitals: Credentialing and e-prescribing start with the NPI, often before day one of intern year.
Medicare (PECOS) and Medicaid: Enrollment begins with the NPI.
Pharmacies, labs and PDMP systems: Orders and prescriptions carry the ordering physician's NPI.
Commercial plans and CAQH: Credentialing keys on it.

When you can skip it

Never for a practicing physician.

Taxonomy code for a physician

The taxonomy code tells CMS and every payer your profession. For most physicians it is 207Q00000X, Family Medicine Physician. SimpleNPI enters it for you from your license type.

Also used	NUCC name	When
`208D00000X`	General Practice Physician	General Practice: only for physicians actually practicing general medicine without a specialty.
`207R00000X`	Internal Medicine Physician	Internal Medicine.
`208000000X`	Pediatrics Physician	Pediatrics.
`2084P0800X`	Psychiatry Physician	Psychiatry & Neurology, Psychiatry.
`207W00000X`	Ophthalmology Physician	Ophthalmology.

Your license on the application

Enter your medical license number and state exactly as the board lists it. Residents with a training license enter that number.

Before you are licensed

Medical students and interns can apply with the Student taxonomy (390200000X), then change to the specialty taxonomy once licensed and board-eligible.

Two free ways to get it

Option 1 · Free · Easiest

SimpleNPI files it for you

One short form: name, license, contact, address, identity and an e-signed authorization. About 3 minutes, no CMS account to create.
A person checks your license and address, then files the application with CMS under your signed authorization.
Your NPI arrives by email and text, with all the documentation, usually within 10 minutes. Filed after midnight Eastern? It issues around 6 am Eastern.

Usually within 10 minutes after the form is complete.

Start the free application

Option 2 · Free

Apply yourself at NPPES

Create an Identity & Access account at nppes.cms.hhs.gov.
Choose Apply for an NPI for myself, Individual (Type 1).
Enter identity, addresses, taxonomy code and license number, then certify and submit.

Usually a few business days; often minutes when the Social Security match passes.

Go to NPPES

What you need (either path)

Legal name exactly as it appears on your Social Security card, date of birth, Social Security number, sex, and birth state or country
Email and mobile phone
Mailing address and practice address (home is fine)
Physician license number (MD, DO) and the state that issued it

Questions physicians ask

What taxonomy code does a physician use?

The specialty code: family medicine 207Q00000X, internal medicine 207R00000X, pediatrics 208000000X, psychiatry 2084P0800X, and so on. General Practice (208D00000X) is for physicians without a specialty.

When should a medical student or resident get an NPI?

Before intern year. Programs need it for credentialing and e-prescribing. Apply with the Student taxonomy and update it in NPPES later; the NPI itself never changes.

Written by Ammon Hardin, LMT, who grew a massage practice to ten locations, built a veteran therapy network, and credentialed a large number of providers along the way. Updated Tue Oct 27, 2026. Free to read, free to use; SimpleNPI files NPI applications for free.