Quick answers
- Which hospitals does Hazel B. Abaya work at?
- Medicare's official clinician data lists Hazel B. Abaya at 2 hospitals: AHMC Anaheim Regional Medical Center and UCI Health-Orange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Hazel B. Abaya see patients?
- Medicare's clinician data lists 2 practice locations, including Anaheim, CA and La Palma, CA. Call before your visit to confirm the address.
- What is Hazel B. Abaya's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Hazel B. Abaya accept Medicare assignment?
- Yes. Medicare's clinician data says Hazel B. Abaya 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 Hazel B. Abaya?
- (714) 772-8282, as listed in official Medicare / NPI Registry data.
- What is Hazel B. Abaya's NPI number?
- 1780116186. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Hazel B. Abaya works
Medicare's Facility Affiliation Data lists Hazel B. Abaya at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- AHMC Anaheim Regional Medical CenterAnaheim, CA · Acute Care Hospital · CCN 050226
- UCI Health-OrangeOrange, CA · Acute Care Hospital · CCN 050348
Practice locations
Addresses where Hazel B. Abaya is enrolled with Medicare (CMS data updated 2026-10-02).
- 1211 W La Palma Ave, Suite 404Anaheim, CA 92801 (714) 772‑8282
- 5451 La Palma Ave, Suite 19La Palma, CA 90623 (714) 521‑9126
Group practices
Medicare enrollment lists Hazel B. Abaya as a member of this group (CMS data updated 2026-10-02).
- Chest and Critical Care Consultants a Medical Group71 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Anaheim
Clinicians with the same Medicare primary specialty in Anaheim, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2016 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1780116186 |
| 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