Sleep Medicine (Internal Medicine) Physician
1,955 active US providers register Sleep Medicine (Internal Medicine) Physician as their primary taxonomy. That is 0.02% of every provider in the registry, and the 293rd largest of 584 specialties with a page here.
- Taxonomy code
- 207RS0012X
- Grouping
- Allopathic & Osteopathic Physicians
- Classification
- Internal Medicine
- Specialization
- Sleep Medicine
- Active providers
- 1,955
- States covered
- 49 of 51
What the code means
An Internist who practices Sleep Medicine is certified in the subspecialty of sleep medicine and specializes in the clinical assessment, physiologic testing, diagnosis, management and prevention of sleep and circadian rhythm disorders. Sleep specialists treat patients of any age and use multidisciplinary approaches. Disorders managed by sleep specialists include, but are not limited to, sleep related breathing disorders, insomnia, hypersomnias, circadian rhythm sleep disorders, parasomnias and sleep related movement disorders.
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 | 199 | |
| Texas | 114 | |
| Florida | 111 | |
| New York | 99 | |
| Virginia | 91 | |
| Michigan | 91 | |
| Pennsylvania | 82 | |
| Washington | 73 | |
| Illinois | 69 | |
| Ohio | 68 | |
| New Jersey | 62 | |
| Georgia | 61 | |
| Maryland | 57 | |
| North Carolina | 56 | |
| Massachusetts | 54 |
Showing the 15 largest of 49 states with at least one.
Who registers under this code
1,153 of these are people and 802 are organisations, so 41% of the code is businesses rather than clinicians. Half of them had registered by 2010, and 242 registered in the last five years, 12% of the current population.
That is close to the pace of the registry as a whole.
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.
- PHILADELPHIA, PA32
- CHICAGO, IL32
- NEW YORK, NY27
- BOSTON, MA25
- SCOTTSDALE, AZ17
- SAN DIEGO, CA17
- SEATTLE, WA17
- LOS ANGELES, CA17
- JACKSONVILLE, FL16
- LOUISVILLE, KY15
What else they list
Providers whose primary code is Sleep Medicine (Internal 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 |
|---|---|---|
| Pulmonary Disease Physician | 602 | 30.8% |
| Internal Medicine Physician | 519 | 26.5% |
| Critical Care Medicine (Internal Medicine) Physician | 303 | 15.5% |
| Student in an Organized Health Care Education/Training Program | 87 | 4.5% |
| Hospitalist Physician | 48 | 2.5% |
| Pediatric Sleep Medicine Physician | 39 | 2.0% |
| Neurology Physician | 38 | 1.9% |
| Sleep Medicine (Psychiatry & Neurology) Physician | 33 | 1.7% |
Nearby specialties
Other taxonomies NUCC files under Internal Medicine.
- Hematology (Internal Medicine) Physician1,572
- Advanced Heart Failure and Transplant Cardiology Physician1,232
- Addiction Medicine (Internal Medicine) Physician1,040
- Allergy & Immunology (Internal Medicine) Physician742
- Hospice and Palliative Medicine (Internal Medicine) Physician3,261
- Sports Medicine (Internal Medicine) Physician485
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.