Quick answers
- Does Alyxis D. Mah accept Medicare assignment?
- Yes. Medicare's clinician data says Alyxis D. Mah accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Alyxis D. Mah's NPI number?
- 1861016685. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Alyxis D. Mah works
Medicare's Facility Affiliation Data lists Alyxis D. Mah at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Memorialcare Orange Coast Medical CenterFountain Valley, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050678
- UCI Health-OrangeOrange, CA · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 050348
Practice locations
Addresses where Alyxis D. Mah is enrolled with Medicare (CMS data updated October 2, 2026).
- 15191 Beach BlvdWestminster, CA 92683 (714) 432‑9990
- 17305 Von Karman Ave, Suite 100Irvine, CA 92614 (714) 432‑9990
Group practices
Medicare enrollment lists Alyxis D. Mah as a member of this group (CMS data updated October 2, 2026).
- Christopher C Ninh MD, Inc5 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Westminster
Clinicians with the same Medicare primary specialty in Westminster, CA — not a recommendation.
Other clinicians in Christopher C Ninh MD, Inc
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2019 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1861016685 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- 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