Quick answers
- Which hospitals does John R. Nelson work at?
- Medicare's official clinician data lists John R. Nelson at 3 hospitals: Adventist Health Hanford, Adventist Health Reedley and Saint Agnes Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John R. Nelson see patients?
- Medicare's clinician data lists 2 practice locations, including Fresno, CA. Call before your visit to confirm the address.
- What is John R. Nelson's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does John R. Nelson accept Medicare assignment?
- Yes. Medicare's clinician data says John R. Nelson accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is John R. Nelson's NPI number?
- 1003908591. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John R. Nelson works
Medicare's Facility Affiliation Data lists John R. Nelson at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Adventist Health HanfordHanford, CA · Acute Care Hospital · CCN 050121
- Adventist Health ReedleyReedley, CA · Acute Care Hospital · CCN 050192
- Saint Agnes Medical CenterFresno, CA · Acute Care Hospital · CCN 050093
Practice locations
Addresses where John R. Nelson is enrolled with Medicare (CMS data updated 2026-10-02).
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in California →
Other cardiologists in Fresno
Clinicians with the same Medicare primary specialty in Fresno, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Louisville School Of Medicine |
| Graduation year | 1982 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1003908591 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians