CONTRA COSTA COUNTY
Medicare Clinicians for NPI 1386719086
General Acute Care Hospital in Martinez, CA
Clinicians Billing Medicare Through This Organization CMS
Clinicians who reassign their Medicare billing to this organization, per CMS enrollment records.
Contra Costa County in Martinez, CA bills Medicare for 526 clinicians across 45 Medicare specialties. The largest specialties are Family Practice with 118, Psychiatry with 103 and Nurse Practitioner with 52. Of these, 122 practice at this address and 225 within 10 miles. Search by name or filter by specialty; each name links to that clinician's NPI profile.
This page lists the 250 clinicians practicing nearest to this organization's location. All 526 are counted in the totals above.
Family Practice (72 of 118)
Martinez, CA 94553
Martinez, CA 94553
Martinez, CA 94553
Martinez, CA 94553
Nurse Practitioner (26 of 52)
Psychiatry (22 of 103)
Martinez, CA 94553
Marriage and Family Therapist (20 of 29)
Clinical Social Worker (15 of 28)
Obstetrics/Gynecology (8 of 18)
2500 Alhambra Avenue, CA 94553
Infectious Disease (7)
Nephrology (7 of 8)
Emergency Medicine (6 of 22)
Martinez, CA 94553
Internal Medicine (5 of 12)
Martinez, CA 94553
Orthopedic Surgery (5 of 8)
Diagnostic Radiology (4 of 9)
Mental Health Counselor (4 of 7)
Ophthalmology (4 of 7)
Anesthesiology (3 of 6)
Dentist (3 of 6)
Hematology/Oncology (3)
Pediatric Medicine (3 of 12)
Podiatry (3 of 6)
Pulmonary Disease (3)
Clinical Psychologist (2 of 7)
Neurology (2 of 7)
Optometry (2 of 3)
Otolaryngology (2)
Plastic and Reconstructive Surgery (2)
Qualified Audiologist (2)
Urology (2 of 4)
Addiction Medicine (1)
Cardiovascular Disease (Cardiology) (1 of 3)
Chiropractic (1 of 3)
Critical Care (Intensivists) (1 of 2)
Dermatology (1)
Gastroenterology (1 of 8)
General Surgery (1 of 4)
Geriatric Psychiatry (1)
Neurosurgery (1)
Oral Surgery (1)
Physical Medicine and Rehabilitation (1)
Physical Therapist in Private Practice (1)
Registered Dietitian or Nutrition Professional (1)
About this data
Medicare reassignment. A clinician who works for a hospital, clinic or medical group usually signs a Medicare reassignment (form CMS-855R). It lets the organization bill Medicare for the clinician's services and receive the payment. This page lists the clinicians whose reassignment to Contra Costa County appears in the CMS Revalidation Reassignment List.
Who is included. Clinicians who bill Medicare under their own NPI through this organization. A clinician can reassign to more than one organization, so the same name may also appear under other groups.
Nearest 250. The totals and specialty counts cover all 526 clinicians. The list shows the 250 whose practice address is closest to this NPI's location, so each Contra Costa County location shows its own nearest clinicians.
Addresses and phone numbers come from each clinician's own NPPES record, so they may point to another office or to the clinician's own practice.
Source: CMS Revalidation Reassignment List, October 2026 release; addresses, phone numbers and Medicare status from NPPES and PECOS. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.