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Specialty market guide

Internal Medicine Practices: Market Guide for Medical Sales

Internal medicine physicians care for adults across chronic conditions. Many run concierge or hybrid practices and some add metabolic, longevity or aesthetic services.

Med Radar market snapshot

Internal Medicine: U.S. & Canada records

Data as of October 5, 2026

Practice & provider records
52,693
Organizations / practices
51,907
Individual providers
786
Independent-practice candidates
1,335

Confirmed or likely owner-operated

Recently enumerated
5,831

NPI registered in the last 2 years

With a verified website
2

Most represented specialties

  1. 1. Internal Medicine52,112
  2. 2. Internal Medicine, Endocrinology, Diabetes & Metabolism160
  3. 3. Internal Medicine, Cardiovascular Disease73
  4. 4. Internal Medicine, Gastroenterology53
  5. 5. Internal Medicine, Pulmonary Disease48
  6. 6. Internal Medicine, Nephrology45
  7. 7. Internal Medicine, Rheumatology39
  8. 8. Internal Medicine, Infectious Disease33

Largest ZIP code clusters

  1. 1. 90048107
  2. 2. 75069100
  3. 3. 1123583
  4. 4. 7703077
  5. 5. 4807575
  6. 6. 9021174

States with the most records

  1. 1. FL6,482
  2. 2. CA5,686
  3. 3. TX4,385
  4. 4. NY4,209
  5. 5. NJ2,579
  6. 6. MI2,280
  7. 7. IL2,128
  8. 8. PA2,100
  9. 9. MD1,963
  10. 10. GA1,531

Types of internal medicine practices

  • General internal medicine offices
  • Concierge internal medicine
  • Internal medicine subspecialty groups

How medical sales professionals prospect this specialty

  • Filter out hospitalists and health-system employed internists
  • Look for concierge models that invest in in-office services

Provider and business classifications

NPI taxonomy 207R (Internal Medicine) as the primary taxonomy.

What public data can and cannot establish

The NPI registry lists providers and organizations that hold an NPI. It does not record revenue, equipment owned, purchasing authority or whether a location is currently open.

How Med Radar helps research this market

Search a city, ZIP code or radius on the Med Radar map, filter to this specialty, and review each practice's business name, decision-maker evidence, website and contact links. Save potential accounts, lasso a cluster and build an optimized driving route.

Explore this market in Med Radar

Want to research individual practices?

Search internal medicine in Med Radar

Methodology & limitations

Figures are counts of normalized records stored in Med Radar's practice database for the United States and Canada, computed on October 5, 2026. Records come mainly from the public CMS NPI registry (NPPES), merged with public business-listing and website evidence.

"Independent-practice candidates" are records Med Radar classifies as confirmed or likely owner-operated based on public evidence; this is a research signal, not a legal determination. "Recently enumerated" means the NPI was registered within the last two years, which is not the same as a verified opening date.

Segment definition: NPI taxonomy 207R (Internal Medicine) as the primary taxonomy.

Counts are not a census: practices without an NPI, with a mailing address in another city, or classified under a different taxonomy may be missing or counted elsewhere. Hospitals and large health systems are filtered out of Med Radar search results but may appear in raw record counts.

Cite as: Med Radar practice database, medradaralma.com, data as of October 5, 2026.

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