Maternal & Fetal Medicine Physician
4,037 active US providers register Maternal & Fetal Medicine Physician as their primary taxonomy. That is 0.04% of every provider in the registry, and the 208th largest of 584 specialties with a page here.
- Taxonomy code
- 207VM0101X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Obstetrics & Gynecology
- Specialization
- Maternal & Fetal Medicine
- Active providers
- 4,037
- States covered
- 51 of 51
What the code means
An obstetrician/gynecologist who cares for, or provides consultation on, patients with complications of pregnancy. This specialist has advanced knowledge of the obstetrical, medical and surgical complications of pregnancy and their effect on both the mother and the fetus. The specialist also possesses expertise in the most current diagnostic and treatment modalities used in the care of patients with complicated pregnancies.
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 | 414 | |
| Texas | 354 | |
| New York | 331 | |
| Florida | 328 | |
| Pennsylvania | 186 | |
| New Jersey | 149 | |
| Ohio | 133 | |
| Illinois | 132 | |
| North Carolina | 130 | |
| Colorado | 108 | |
| Virginia | 107 | |
| Maryland | 105 | |
| Massachusetts | 102 | |
| Michigan | 96 | |
| Georgia | 94 |
Showing the 15 largest of 51 states with at least one.
Who registers under this code
3,228 of these are people and 809 are organisations, so 20% of the code is businesses rather than clinicians. Half of them had registered by 2007, and 297 registered in the last five years, 7% 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, NY125
- HOUSTON, TX100
- BOSTON, MA59
- PHILADELPHIA, PA53
- LOS ANGELES, CA52
- ATLANTA, GA50
- PORTLAND, OR49
- CHICAGO, IL46
- DALLAS, TX44
- SAINT LOUIS, MO41
What else they list
Providers whose primary code is Maternal & Fetal Medicine 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 |
|---|---|---|
| Obstetrics & Gynecology Physician | 1,672 | 41.4% |
| Student in an Organized Health Care Education/Training Program | 206 | 5.1% |
| Obstetrics Physician | 123 | 3.0% |
| Gynecology Physician | 55 | 1.4% |
| Clinical Genetics (M.D.) Physician | 45 | 1.1% |
| Specialist | 40 | 1.0% |
| Critical Care Medicine (Obstetrics & Gynecology) Physician | 26 | 0.6% |
| Neonatal-Perinatal Medicine Physician | 17 | 0.4% |
Nearby specialties
Other taxonomies NUCC files under Obstetrics & Gynecology.
- Reproductive Endocrinology Physician2,403
- Gynecologic Oncology Physician2,291
- Obstetrics Physician2,097
- Gynecology Physician6,067
- Urogynecology and Reconstructive Pelvic Surgery (Obstetrics & Gynecology) Physician1,267
- Obstetrics & Gynecology Physician58,231
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.