Taxonomy code 207R00000X: Internal Medicine

207R00000X is the NUCC Health Care Provider Taxonomy code for Internal Medicine, in the group Allopathic & Osteopathic Physicians. It is one of the codes a provider lists on the NPI application to tell CMS and payers what they do.

Code

207R00000X

Grouping

Allopathic & Osteopathic Physicians

Classification

Internal Medicine

Section

Individual

NUCC version

26.1

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

NUCC notes: Source: American Board of Medical Specialties, 2007. www.abms.org [7/1/2007: added definition, added source; 7/1/2011: modified source]<br/>Additional Resources: American Board of Internal Medicine, 2007. http://www.abim.org/. American Osteopathic Board of Internal Medicine, 2007. http://www.osteopathic.org/certification<br/>Board certification for Medical Doctors (MDs) is provided by the American Board of Internal Medicine. Board certification for Doctors of Osteopathy (DOs) is provided by the American Osteopathic Board of Internal Medicine.

Who uses this code

Physicians: Internal Medicine.

Get an NPI with this taxonomy

Two free ways. SimpleNPI files the application for you, and a person confirms the taxonomy before filing; the NPI usually arrives by email and text, with all the documentation, within 10 minutes. Or apply yourself at nppes.cms.hhs.gov and type the code into the taxonomy field. First, check the free registry in case you already have an NPI.

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

Related codes in Internal Medicine

Code	Name
`207RA0401X`	Internal Medicine, Addiction Medicine
`207RA0000X`	Internal Medicine, Adolescent Medicine
`207RA0002X`	Internal Medicine, Adult Congenital Heart Disease
`207RA0001X`	Internal Medicine, Advanced Heart Failure and Transplant Cardiology
`207RA0201X`	Internal Medicine, Allergy & Immunology
`207RC0000X`	Internal Medicine, Cardiovascular Disease
`207RI0001X`	Internal Medicine, Clinical & Laboratory Immunology
`207RC0001X`	Internal Medicine, Clinical Cardiac Electrophysiology
`207RC0200X`	Internal Medicine, Critical Care Medicine
`207QB0505X`	Internal Medicine, Diabetology
`207RE0101X`	Internal Medicine, Endocrinology, Diabetes & Metabolism
`207RG0100X`	Internal Medicine, Gastroenterology

Questions

Can I change my taxonomy code later?

Yes, for free, in your NPPES account. Add the new code with its license, make it primary, and remove the old one if it no longer applies. The NPI itself never changes.

Does 207R00000X have to match my license?

It should describe the profession your license covers. Payers compare the taxonomy with the license during credentialing, and a mismatch slows that down.

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.