NUCC taxonomy code

207RG0100X - Gastroenterology Physician

207RG0100X is the NUCC provider taxonomy code for Gastroenterology Physician, a specialization within Internal Medicine (individual providers). 26,110 providers in our latest NPPES snapshot list it as their primary taxonomy.

26,110 providers · primary taxonomy

Code breakdown

Taxonomy code 207RG0100X

Display name Gastroenterology Physician

Grouping Allopathic & Osteopathic Physicians

Classification Internal Medicine

Specialization Gastroenterology

Section Individual

Directory Internal Medicine provider directory

Definition

An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

Definition from the NUCC Health Care Provider Taxonomy code set.

Related taxonomy codes

207R00000X Internal Medicine Physician 207RA0401X Addiction Medicine (Internal Medicine) Physician (Internal Medicine) 207RA0000X Adolescent Medicine (Internal Medicine) Physician (Internal Medicine) 207RA0002X Adult Congenital Heart Disease Physician (Internal Medicine) 207RA0001X Advanced Heart Failure and Transplant Cardiology Physician (Internal Medicine) 207RA0201X Allergy & Immunology (Internal Medicine) Physician (Internal Medicine) 207RC0000X Cardiovascular Disease Physician (Internal Medicine) 207RI0001X Clinical & Laboratory Immunology (Internal Medicine) Physician (Internal Medicine)

Frequently asked questions

What does taxonomy code 207RG0100X mean?

207RG0100X is the NUCC Health Care Provider Taxonomy code for Gastroenterology Physician, a specialization of Internal Medicine in the "Allopathic & Osteopathic Physicians" grouping. It classifies individual providers.

Where is the taxonomy code used?

Providers select a taxonomy code when applying for an NPI, and it appears on insurance claims (CMS-1500 box 33b / 837 electronic claims) to identify the provider's classification. Payers may require the taxonomy that matches your credential and license.

How do I find providers with taxonomy 207RG0100X?

Browse the Internal Medicine directory, or use the NPI search and filter by state.

Source: CMS NPPES (public data). Snapshot 2026-07-13.