Quick answers
- Where does John G. Donnelly see patients?
- Medicare's clinician data lists 1 practice location in Oceanside, CA. Call before your visit to confirm the address.
- What is John G. Donnelly's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does John G. Donnelly accept Medicare assignment?
- Yes. Medicare's clinician data says John G. Donnelly 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. Donnelly?
- (760) 712-3535, as listed in official Medicare / NPI Registry data.
- What is John G. Donnelly's NPI number?
- 1760566160. 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. Donnelly is enrolled with Medicare (CMS data updated 2026-10-02).
- 1701 Mission Ave, Suite 230Oceanside, CA 92058 (760) 712‑3535
Group practices
Medicare enrollment lists John G. Donnelly as a member of this group (CMS data updated 2026-10-02).
- Mental Health Systems Inc34 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Oceanside
Clinicians with the same Medicare primary specialty in Oceanside, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Creighton University School Of Medicine |
| Graduation year | 1989 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1760566160 |
| 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