Provider directory · By state
Healthcare providers in California
CMS NPPES registration records for California, aggregated across the 14 medical specialties Fonteum currently tracks, with CMS Care Compare facility counts and HRSA HPSA shortage-area context.
Fonteum tracks 46,514 healthcare providers in California across the 14 medical specialties it ingests from the CMS NPPES NPI Registry, alongside 8,224 Medicare-certified facilities across 6 care families from CMS Care Compare, with HRSA shortage-area and OIG exclusion context. Every figure carries its source, snapshot date, and methodology version. Snapshot 2026-05-06 – 2026-05-07.
Provider supply by specialty in California
Active-provider counts for the 14 specialties Fonteum ingests from the CMS NPPES NPI Registry, with per-100,000 density (U.S. Census PEP V2025) and the national density rank of 51 jurisdictions. This covers the tracked specialties only — not every NPPES provider in California.
| Specialty | Providers | Per 100k | Density rank |
|---|---|---|---|
| Chiropractic | 11,752 | 29.8 | #22 |
| Psychiatry | 9,283 | 23.5 | #10 |
| Pediatrics | 3,372 | 8.6 | #22 |
| Cardiology | 3,275 | 8.3 | #32 |
| Ophthalmology | 3,197 | 8.1 | #12 |
| Orthopedic Surgery | 2,802 | 7.1 | #50 |
| Neurology | 2,653 | 6.7 | #21 |
| Dermatology | 2,508 | 6.4 | #10 |
| Gastroenterology | 2,240 | 5.7 | #25 |
| Urology | 1,560 | 4.0 | #37 |
| Otolaryngology (ENT) | 1,358 | 3.4 | #32 |
| Plastic Surgery | 1,007 | 2.6 | #6 |
| Obstetrics & Gynecology | 888 | 2.3 | #28 · below threshold |
| Oncology (Medical) | 619 | 1.6 | #31 · below threshold |
Source:CMS NPPESSnapshot 2026-05-06 – 2026-05-07
Medicare-certified facilities in California
8,224 Medicare-certified facilities operate in California across the families Fonteum tracks from CMS Care Compare. Each family links to its facility-level page for California.
| Facility type | Facilities |
|---|---|
| Home health agencies | 3,147 |
| Hospice providers | 2,155 |
| Nursing homes | 1,162 |
| Dialysis facilities | 737 |
| Ambulatory surgical centers | 645 |
| Hospitals | 378 |
Source:CMS Care CompareSnapshot 2026-05-07
Health professional shortage areas in California
HRSA currently designates 1,623 active Health Professional Shortage Areas in California — 559 primary care, 546 dental health, and 518 mental health. A HPSA marks a geography, population, or facility with too few clinicians relative to need, scored 0–26 by HRSA.
Source:HRSA HPSASnapshot 2026-05-06 – 2026-05-07
Provider exclusions and sanctions in California
California reports 7,896 OIG LEIE federal exclusion records by address state, drawn from the OIG List of Excluded Individuals and Entities (refreshed monthly). State Medicaid exclusion lists are tracked for select states; California is covered by the federal OIG list on the sanctions hub. Each record links to its source exclusion list.
Related California healthcare data
- Hospital operating margins in California
CMS HCRIS cost-report margins vs the national average.
- Oncology (Medical) access gap in California
1.6 per 100k — national density rank #31.
- Obstetrics & Gynecology access gap in California
2.3 per 100k — national density rank #28.
- Plastic Surgery access gap in California
2.6 per 100k — national density rank #6.
- Home health agencies in California
3,147 Medicare-certified home health agencies on CMS Care Compare.
- Hospice providers in California
2,155 Medicare-certified hospice providers on CMS Care Compare.
- Nursing homes in California
1,162 Medicare-certified nursing homes on CMS Care Compare.
- Dialysis facilities in California
737 Medicare-certified dialysis facilities on CMS Care Compare.
- Ambulatory surgical centers in California
645 Medicare-certified ambulatory surgical centers on CMS Care Compare.
- Hospitals in California
378 Medicare-certified hospitals on CMS Care Compare.
Frequently asked questions about California providers
How many healthcare providers does Fonteum track in California?
- Fonteum tracks 46,514 providers in California across the 14 medical specialties it currently ingests from the CMS NPPES NPI Registry. This is the supply within those tracked specialties, not every NPPES-registered provider in California. The snapshot date is 2026-05-06 – 2026-05-07.
Which medical specialty has the most providers in California?
- Among the 14 tracked specialties, Chiropractic is the largest in California with 11,752 providers, or 29.8 per 100,000 residents — a national density rank of #22 of 51. Counts come from the CMS NPPES NPI Registry.
What Medicare-certified facilities are in California?
- California has 8,224 Medicare-certified facilities across 6 families Fonteum tracks from CMS Care Compare, including nursing homes, hospitals, home health agencies, hospices, dialysis facilities, and ambulatory surgical centers. Each family links to its facility-level Care Compare page for California.
Are there provider exclusions or sanctions in California?
- California reports 7,896 OIG LEIE federal exclusion records by address state, drawn from the OIG List of Excluded Individuals and Entities (refreshed monthly). State Medicaid exclusion lists are tracked for select states; California is covered by the federal OIG list on the sanctions hub. Each record links to its source exclusion list.
Does Fonteum track shortage areas in California?
- HRSA currently designates 1,623 active Health Professional Shortage Areas in California — 559 primary care, 546 dental health, and 518 mental health. A HPSA marks a geography, population, or facility with too few clinicians relative to need, scored 0–26 by HRSA.
How current is the California provider data?
- The California provider counts reflect the CMS NPPES supply-by-state snapshot dated 2026-05-06 – 2026-05-07, under methodology nppes-supply-by-state/v2026.05. NPPES refreshes weekly and Care Compare monthly; Fonteum re-snapshots on that cadence. Every field on this page carries its source name and snapshot date.
How California provider data is built
Provider counts aggregate the CMS NPPES supply-by-state datasets under methodology nppes-supply-by-state/v2026.05; facility counts read the latest CMS Care Compare snapshots; HPSA and exclusion figures draw from HRSA and OIG / state Medicaid sources. Each value is source-provenanced — its source name, snapshot date, and methodology version travel with it.
NPPES dataset · Methodology · Source registry · Browse by specialty · All states
Fonteum is a US healthcare provenance registry that publishes signed, chain-of-custody-attested research and data pages on Medicare, Medicaid, and federal regulator datasets, drawing from 44 federal source families across CMS, OIG, HRSA, AHRQ, and HHS.