Quick answers
- Which hospitals does Antonis Antoniou work at?
- Medicare's official clinician data lists Antonis Antoniou at 1 hospital: Kaiser Foundation Hospital - Fresno. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Antonis Antoniou see patients?
- Medicare's clinician data lists 2 practice locations, including Fresno, CA and Stockton, CA. Call before your visit to confirm the address.
- What is Antonis Antoniou's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Antonis Antoniou accept Medicare assignment?
- Yes. Medicare's clinician data says Antonis Antoniou 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 Antonis Antoniou?
- (559) 448-4500, as listed in official Medicare / NPI Registry data.
- What is Antonis Antoniou's NPI number?
- 1861564601. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Antonis Antoniou works
Medicare's Facility Affiliation Data lists Antonis Antoniou 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 Antonis Antoniou is enrolled with Medicare (CMS data updated 2026-10-02).
- 7300 N Fresno StFresno, CA 93720 (559) 448‑4500
- 7373 W LaneStockton, CA 95210 (209) 476‑2000
Group practices
Medicare enrollment lists Antonis Antoniou as a member of this group (CMS data updated 2026-10-02).
- Permanente Medical Group Inc10,996 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Fresno
Clinicians with the same Medicare primary specialty in Fresno, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861564601 |
| 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