Alvin Liao
NPI 1598419004 · Physician Assistant · Downey, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Alvin Liao is a Physician Assistant provider in Downey, CA (NPI 1598419004).
Provider details
- NPI number
- 1598419004
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Male
- Sole proprietor
- Yes
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
4 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
3 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 |
|---|---|---|
| Diclofenac Sodium | 35 | 15 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 22 | 22 |
| Meloxicam | 22 | — |
| Gabapentin | 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 (2)
- 8700 Warner Ave Ste 140Fountain Valley, CA 92708-3209Phone: (714) 850-7300
- 1731 E 120th StAttn: PA Program Charles Drew UniversityLos Angeles, CA 90059Phone: (323) 563-4800
Registry dates
- Enumerated
- 2022-02-04
- Last updated
- 2024-02-22
- Certified
- 2023-02-09
Frequently asked questions
- What is Alvin Liao's NPI number?
- Alvin Liao's National Provider Identifier (NPI) is 1598419004, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Alvin Liao's specialty?
- Alvin Liao is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Alvin Liao located?
- Alvin Liao's practice location on file with NPPES is 11500 Brookshire Ave, Downey, CA 90241-4917.
- What is Alvin Liao's phone number?
- The practice phone number listed in the NPPES registry for Alvin Liao is (562) 904-5000.
- Does Alvin Liao accept Medicare?
- Alvin Liao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Alvin Liao's NPI active?
- Yes — Alvin Liao's NPI (1598419004) is active in the NPPES registry as of the last update on 2024-02-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.