Quick answers
- Which hospitals does Jonathan R. De Guzman work at?
- Medicare's official clinician data lists Jonathan R. De Guzman at 1 hospital: Providence Holy Cross Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan R. De Guzman see patients?
- Medicare's clinician data lists 1 practice location in Mission Hills, CA. Call before your visit to confirm the address.
- What is Jonathan R. De Guzman's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Jonathan R. De Guzman accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan R. De Guzman 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 Jonathan R. De Guzman?
- (818) 361-0136, as listed in official Medicare / NPI Registry data.
- What is Jonathan R. De Guzman's NPI number?
- 1225121924. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Jonathan R. De Guzman works
Medicare's Facility Affiliation Data lists Jonathan R. De Guzman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence Holy Cross Medical CenterMission Hills, CA · Acute Care Hospital · CCN 050278
Practice locations
Addresses where Jonathan R. De Guzman is enrolled with Medicare (CMS data updated 2026-10-02).
- 11550 Indian Hills Rd, Suite 241Mission Hills, CA 91345 (818) 361‑0136
Group practices
Medicare enrollment lists Jonathan R. De Guzman as a member of this group (CMS data updated 2026-10-02).
- Ramin Ganjianpour MD Inc4 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Mission Hills
Clinicians with the same Medicare primary specialty in Mission Hills, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2005 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225121924 |
| 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