Gastroenterology Physician
26,110 active US providers register Gastroenterology Physician as their primary taxonomy. That is 0.3% of every provider in the registry, and the 69th largest of 584 specialties with a page here.
- Taxonomy code
- 207RG0100X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Internal Medicine
- Specialization
- Gastroenterology
- Active providers
- 26,110
- States covered
- 51 of 51
What the code means
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 quoted verbatim from the NUCC Health Care Provider Taxonomy code set, version 25.1. Not paraphrased.
Where they are
Counted by practice location, not by mailing address or by licence state. A provider practising across a state line is counted where they practise.
| State | Providers | Share |
|---|---|---|
| California | 2,823 | |
| New York | 2,367 | |
| Florida | 2,078 | |
| Texas | 1,830 | |
| Pennsylvania | 1,257 | |
| Illinois | 1,055 | |
| New Jersey | 973 | |
| Ohio | 892 | |
| North Carolina | 833 | |
| Massachusetts | 784 | |
| Maryland | 728 | |
| Michigan | 702 | |
| Georgia | 647 | |
| Virginia | 637 | |
| Washington | 577 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
20,791 of these are people and 5,319 are organisations, so 20% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 1,173 registered in the last five years, 4% of the current population.
That is a slow-growing code, which usually means an established field replacing retirements rather than expanding.
Where the practices are
By practice-location city. City counts are noisier than state counts, because a large employer files one address for many providers.
- NEW YORK, NY636
- HOUSTON, TX347
- CHICAGO, IL316
- BOSTON, MA286
- PHILADELPHIA, PA253
- LOS ANGELES, CA247
- BROOKLYN, NY233
- ROCHESTER, MN193
- DALLAS, TX177
- SAINT LOUIS, MO174
What else they list
Providers whose primary code is Gastroenterology Physician most often carry these secondary taxonomies as well. This is the closest thing the registry has to a map of which specialties overlap in practice, and it is not published anywhere else.
| Also listed | Providers | Share |
|---|---|---|
| Internal Medicine Physician | 4,537 | 17.4% |
| Student in an Organized Health Care Education/Training Program | 1,426 | 5.5% |
| Hepatology Physician | 404 | 1.5% |
| Hospitalist Physician | 293 | 1.1% |
| Specialist | 271 | 1.0% |
| Transplant Hepatology Physician | 200 | 0.8% |
| Nurse Practitioner | 79 | 0.3% |
| Physician Assistant | 65 | 0.2% |
Nearby specialties
Other taxonomies NUCC files under Internal Medicine.
- Pulmonary Disease Physician19,624
- Nephrology Physician17,538
- Hematology & Oncology Physician17,524
- Cardiovascular Disease Physician36,376
- Infectious Disease Physician13,206
- Endocrinology, Diabetes & Metabolism Physician12,930
Looking up a specific provider
These counts come from the monthly NPPES file. To check one provider, use their NPI: the lookup reads the live registry and shows whether the identifier is still active, which the monthly file cannot tell you about the last few weeks.
Counts from npidata_pfile_20050523-20260712.csv, built 2026-08-09. Primary taxonomy only, deactivated identifiers excluded.