Anthony Liu, M.D.
NPI 1912232224 · Ophthalmology Physician · San Mateo, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Anthony Liu, M.D. is a Ophthalmology Physician provider in San Mateo, CA (NPI 1912232224).
Provider details
- NPI number
- 1912232224
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A104903 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
16 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
20 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More99212 | 20 | $70 |
Typical Medicare-allowed amounts for these services range $70–$70 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 29 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 733 | 327 |
| Timolol Maleate | 415 | 168 |
| Bimatoprost | 365 | 108 |
| Prednisolone Acetate | 358 | 234 |
| Brimonidine Tartrate | 358 | 142 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 316 | 117 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 190 | 160 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2009-10-05
- Last updated
- 2021-12-14
Frequently asked questions
- What is Anthony Liu's NPI number?
- Anthony Liu's National Provider Identifier (NPI) is 1912232224, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Anthony Liu's specialty?
- Anthony Liu is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Anthony Liu located?
- Anthony Liu's practice location on file with NPPES is 101 S San Mateo Dr Ste 310, San Mateo, CA 94401-3844.
- What is Anthony Liu's phone number?
- The practice phone number listed in the NPPES registry for Anthony Liu is (650) 342-7474.
- Does Anthony Liu accept Medicare?
- Anthony Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Anthony Liu's NPI active?
- Yes — Anthony Liu's NPI (1912232224) is active in the NPPES registry as of the last update on 2021-12-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.