Quick answers
- Which hospitals does Jonathan Y. Chap work at?
- Medicare's official clinician data lists Jonathan Y. Chap at 3 hospitals: Centinela Hospital Medical Center, Garfield Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Jonathan Y. Chap see patients?
- Medicare's clinician data lists 3 practice locations, including Los Angeles, CA, La Mirada, CA and Rancho Santa Margarita, CA. Call before your visit to confirm the address.
- What is Jonathan Y. Chap's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does Jonathan Y. Chap accept Medicare assignment?
- Yes. Medicare's clinician data says Jonathan Y. Chap 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 Y. Chap?
- (213) 977-2121, as listed in official Medicare / NPI Registry data.
- What is Jonathan Y. Chap's NPI number?
- 1306510888. 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 Y. Chap works
Medicare's Facility Affiliation Data lists Jonathan Y. Chap at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Centinela Hospital Medical CenterInglewood, CA · Acute Care Hospital · CCN 050739
- Garfield Medical CenterMonterey Park, CA · Acute Care Hospital · CCN 050737
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Jonathan Y. Chap is enrolled with Medicare (CMS data updated 2026-10-02).
- 1225 Wilshire BlvdLos Angeles, CA 90017 (213) 977‑2121
- 12675 La Mirada Blvd, Suite 201and401La Mirada, CA 90638 (562) 903‑7339
- 22431 Antonio Pkwy, B160 613Rancho Santa Margarita, CA 92688 (855) 727‑2251
Group practices
Medicare enrollment lists Jonathan Y. Chap as a member of these groups (CMS data updated 2026-10-02).
- PIH Health Physicians622 clinicians in the group
- Physician Assistant Specialists-California Inc10 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Los Angeles
Clinicians with the same Medicare primary specialty in Los Angeles, CA — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2021 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1306510888 |
| 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