Quick answers
- Where does John G. Agtuca see patients?
- Medicare's clinician data lists 2 practice locations, including Corona, CA and Riverside, CA. Call before your visit to confirm the address.
- What is John G. Agtuca's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John G. Agtuca accept Medicare assignment?
- Yes. Medicare's clinician data says John G. Agtuca 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 John G. Agtuca?
- (951) 371-2703, as listed in official Medicare / NPI Registry data.
- What is John G. Agtuca's NPI number?
- 1306200183. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where John G. Agtuca is enrolled with Medicare (CMS data updated 2026-10-02).
- 2250 S Main St, Suite 106Corona, CA 92882 (951) 371‑2703
- 6900 Brockton Ave, Suite 100Riverside, CA 92506 (951) 781‑3800
Group practices
Medicare enrollment lists John G. Agtuca as a member of these groups (CMS data updated 2026-10-02).
- Citrus Valley Medical Associates Inc14 clinicians in the group
- Platinum Providers Medical Group Inc3 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Corona
Clinicians with the same Medicare primary specialty in Corona, CA — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Arizona College Of Osteopathic Medicine Mid Western University |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306200183 |
| 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
- 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