Quick answers
- Which hospitals does Ryan Mayer work at?
- Medicare's official clinician data lists Ryan Mayer at 5 hospitals: Centinela Hospital Medical Center, Martin Luther King, Jr. Community Hospital, Pomona Valley Hospital Medical Center, Saint Francis Medical Center and San Antonio Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ryan Mayer see patients?
- Medicare's clinician data lists 2 practice locations, including Pomona, CA and Upland, CA. Call before your visit to confirm the address.
- What is Ryan Mayer's specialty?
- Medicare lists Orthopedic Surgery as the primary specialty.
- Does Ryan Mayer accept Medicare assignment?
- Yes. Medicare's clinician data says Ryan Mayer 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.
- Does Ryan Mayer offer telehealth?
- Medicare's clinician data says Ryan Mayer offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Ryan Mayer?
- (909) 596-4346, as listed in official Medicare / NPI Registry data.
- What is Ryan Mayer's NPI number?
- 1255793527. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ryan Mayer works
Medicare's Facility Affiliation Data lists Ryan Mayer 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
- Martin Luther King, Jr. Community HospitalLos Angeles, CA · Acute Care Hospital · CCN 050779
- Pomona Valley Hospital Medical CenterPomona, CA · Acute Care Hospital · CCN 050231
- Saint Francis Medical CenterLynwood, CA · Acute Care Hospital · CCN 050104
- San Antonio Regional HospitalUpland, CA · Acute Care Hospital · CCN 050099
Practice locations
Addresses where Ryan Mayer is enrolled with Medicare (CMS data updated 2026-10-02).
- 160 E Artesia St, Suite 255Pomona, CA 91767 (909) 596‑4346
- 600 N Euclid Ave, Suite 202Upland, CA 91786 (909) 596‑4346
Group practices
Medicare enrollment lists Ryan Mayer as a member of this group (CMS data updated 2026-10-02).
- Premier Orthopaedic Trauma Specialists PMC36 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Pomona
Clinicians with the same Medicare primary specialty in Pomona, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Irvine, California College Of Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1255793527 |
| 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