Regina Ha, PA-C
NPI 1730598400 · Physician Assistant · Fullerton, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Regina Ha, PA-C is a Physician Assistant provider in Fullerton, CA (NPI 1730598400).
Provider details
- NPI number
- 1730598400
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA51623 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
11 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Ondansetronbrand: Ondansetron Odt | 58 | 57 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 36 | 36 |
| Cephalexin | 17 | 16 |
| Ibuprofen | 16 | 16 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Additional practice locations (1)
- 3020 Childrens WaySan Diego, CA 92123-4223Phone: (858) 966-8800
Registry dates
- Enumerated
- 2014-08-07
- Last updated
- 2022-11-02
- Certified
- 2022-11-02
Frequently asked questions
- What is Regina Ha's NPI number?
- Regina Ha's National Provider Identifier (NPI) is 1730598400, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Regina Ha's specialty?
- Regina Ha is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Regina Ha located?
- Regina Ha's practice location on file with NPPES is 101 E Valencia Mesa Dr, Fullerton, CA 92835-3809.
- What is Regina Ha's phone number?
- The practice phone number listed in the NPPES registry for Regina Ha is (714) 871-3280.
- Does Regina Ha accept Medicare?
- Regina Ha is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Regina Ha's NPI active?
- Yes — Regina Ha's NPI (1730598400) is active in the NPPES registry as of the last update on 2022-11-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.