Quick answers
- Which hospitals does Keith A. Johnstone Sr. work at?
- Medicare's official clinician data lists Keith A. Johnstone Sr. at 1 hospital: Kaiser Foundation Hospital - Fresno. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Keith A. Johnstone Sr. see patients?
- Medicare's clinician data lists 1 practice location in Fresno, CA. Call before your visit to confirm the address.
- What is Keith A. Johnstone Sr.'s specialty?
- Medicare lists Internal Medicine as the primary specialty, and also Cardiovascular Disease (Cardiology).
- Does Keith A. Johnstone Sr. accept Medicare assignment?
- Yes. Medicare's clinician data says Keith A. Johnstone Sr. 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 the phone number for Keith A. Johnstone Sr.?
- (559) 448-4500, as listed in official Medicare / NPI Registry data.
- What is Keith A. Johnstone Sr.'s NPI number?
- 1760466049. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Keith A. Johnstone Sr. works
Medicare's Facility Affiliation Data lists Keith A. Johnstone Sr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Kaiser Foundation Hospital - FresnoFresno, CA · Acute Care Hospital · CCN 050710
Practice locations
Addresses where Keith A. Johnstone Sr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 7300 N Fresno StFresno, CA 93720 (559) 448‑4500
Group practices
Medicare enrollment lists Keith A. Johnstone Sr. as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
Other internal medicine doctors in Fresno
Clinicians with the same Medicare primary specialty in Fresno, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Michigan Medical School |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760466049 |
| 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