Provider Types in the U.S.
The U.S. healthcare system includes millions of individual providers and hundreds of thousands of facilities. Below is a comprehensive breakdown with approximate current counts.
Provider Counts by Type
| Provider Type | Approximate Count | Notes |
|---|---|---|
| Hospitals | ~6,100 | Includes community, federal, psychiatric, long-term care |
| Active physicians | ~1,100,000 | MDs and DOs in active practice |
| Registered nurses | ~4,000,000 | RNs across all settings |
| Nurse practitioners | ~355,000 | Advanced practice with prescribing authority |
| Physician assistants | ~168,000 | Physician-supervised or independent practice |
| Dentists | ~200,000 | General and specialty dentists |
| Pharmacies | ~70,000 | Retail, mail-order, and specialty |
| Ambulatory surgery centers | ~7,300 | CMS-certified outpatient surgical facilities |
| Skilled nursing facilities | ~15,000 | Post-acute and long-term nursing care |
| Home health agencies | ~11,000 | CMS-certified home health providers |
| Hospice agencies | ~5,500 | End-of-life care providers |
| Clinical laboratories | ~320,000 | CLIA-certified labs (includes physicians' offices) |
| Group practices | ~300,000+ | Multi-physician organizations |
| Federally Qualified Health Centers | ~1,400 | Community health centers serving underserved populations |
| Rural health clinics | ~5,000 | CMS-designated rural primary care clinics |
Hospital Breakdown
| Hospital Category | Count | Beds |
|---|---|---|
| Community hospitals | ~5,100 | ~790,000 |
| Federal government hospitals | ~209 | ~27,000 |
| Psychiatric hospitals | ~660 | ~55,000 |
| Long-term care hospitals | ~330 | ~14,000 |
| Total | ~6,100 | ~890,000 |
Community hospitals include non-federal, short-term general, and specialty hospitals that are accessible by the general public.
Provider Classification Systems
NPI (National Provider Identifier)
- Type 1 NPI — Assigned to individual providers (physicians, nurses, therapists, pharmacists)
- Type 2 NPI — Assigned to organizational providers (hospitals, group practices, home health agencies, labs)
- Maintained in the NPPES (National Plan & Provider Enumeration System) by CMS
- Required for all HIPAA-covered transactions (claims, eligibility, referrals)
Provider Taxonomy Codes
The Healthcare Provider Taxonomy Code Set classifies providers by type, classification, and area of specialization. Examples:
207R00000X— Internal Medicine208600000X— Surgery261QM0801X— Critical Access Hospital333600000X— Pharmacy
CMS Provider Enrollment
Providers participating in Medicare must enroll through PECOS (Provider Enrollment, Chain, and Ownership System). This process verifies:
- Provider credentials and licensure
- Practice location
- Ownership and managing control information
- Compliance and exclusion screening
Specialty Distribution
Among active physicians, approximate specialty distribution includes:
- Primary care (family medicine, internal medicine, pediatrics) — ~35%
- Surgical specialties — ~15%
- Medical subspecialties (cardiology, gastroenterology, pulmonology) — ~20%
- Hospital-based (anesthesiology, radiology, pathology, emergency medicine) — ~15%
- Psychiatry and behavioral health — ~5%
- Other specialties — ~10%
