Andy Liu, MD
NPI 1285082446 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Andy Liu, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1285082446).
Provider details
- NPI number
- 1285082446
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A153687 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
10 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
937 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 190 | $222 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 168 | $43 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 163 | $154 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 153 | $40 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 83 | $119 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 403 | 390 |
| Pantoprazole Sodium | 335 | 135 |
| Omeprazole | 108 | 48 |
| Famotidine | 41 | 18 |
| Linaclotidebrand: Linzess | 36 | 11 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 32 | 31 |
| Sucralfate | 24 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$395 across 6 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-05-28
- Last updated
- 2019-10-15
Frequently asked questions
- What is Andy Liu's NPI number?
- Andy Liu's National Provider Identifier (NPI) is 1285082446, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Andy Liu's specialty?
- Andy Liu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Andy Liu located?
- Andy Liu's practice location on file with NPPES is 2351 Clay St, San Francisco, CA 94115-1931.
- What is Andy Liu's phone number?
- The practice phone number listed in the NPPES registry for Andy Liu is (415) 600-6000.
- Does Andy Liu accept Medicare?
- Andy Liu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Andy Liu's NPI active?
- Yes — Andy Liu's NPI (1285082446) is active in the NPPES registry as of the last update on 2019-10-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.