Sonia Liu, MD
NPI 1437348695 · Family Medicine Physician · San Carlos, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sonia Liu, MD is a Family Medicine Physician provider in San Carlos, CA (NPI 1437348695).
Provider details
- NPI number
- 1437348695
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A101704 (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
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
207 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 Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 61 | $153 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 47 | $110 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 43 | $155 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 31 | $214 |
| Administration of Influenza Virus VaccineG0008 | 13 | $39 |
| Administration of Pneumococcal VaccineG0009 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 18 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 115 | 34 |
| Levothyroxine Sodium | 40 | 11 |
| Lisinopril | 40 | — |
| Amlodipine Besylate | 37 | — |
| Rosuvastatin Calcium | 24 | — |
| Losartan Potassium | 24 | — |
| Metformin Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 701 E El Camino RealMountain View, CA 94040-2833Phone: (650) 404-8370Fax: (650) 404-8470
Registry dates
- Enumerated
- 2007-10-23
- Last updated
- 2020-05-27
- Certified
- 2020-05-27
Frequently asked questions
- What is Sonia Liu's NPI number?
- Sonia Liu's National Provider Identifier (NPI) is 1437348695, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonia Liu's specialty?
- Sonia Liu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Sonia Liu located?
- Sonia Liu's practice location on file with NPPES is 301 Industrial Rd, San Carlos, CA 94070-2603.
- What is Sonia Liu's phone number?
- The practice phone number listed in the NPPES registry for Sonia Liu is (650) 596-4000.
- Does Sonia Liu accept Medicare?
- Sonia Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sonia Liu's NPI active?
- Yes — Sonia Liu's NPI (1437348695) is active in the NPPES registry as of the last update on 2020-05-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.