Judy Hsu, MD
NPI 1043384050 · Internal Medicine Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Judy Hsu, MD is a Internal Medicine Physician provider in San Francisco, CA (NPI 1043384050).
Provider details
- NPI number
- 1043384050
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A064207 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 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
2,345 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 345 | $6 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 243 | $13 |
| Urine Microalbumin (protein) Level82043 | 229 | $6 |
| Creatinine Level to Test for Kidney Function Or Muscle Injury82570 | 229 | $5 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 224 | $8 |
| Liver Enzyme (sgpt), Level84460 | 222 | $5 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 108 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 779 | 180 |
| Atorvastatin Calcium | 601 | 164 |
| Valsartan | 402 | 100 |
| Metoprolol Succinate | 351 | 92 |
| Omeprazole | 242 | 93 |
| Irbesartan | 223 | 61 |
| Famotidine | 211 | 91 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$17 across 1 record (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
- 2006-11-20
- Last updated
- 2017-01-24
Frequently asked questions
- What is Judy Hsu's NPI number?
- Judy Hsu's National Provider Identifier (NPI) is 1043384050, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Judy Hsu's specialty?
- Judy Hsu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Judy Hsu located?
- Judy Hsu's practice location on file with NPPES is 1520 Stockton St, San Francisco, CA 94133.
- What is Judy Hsu's phone number?
- The practice phone number listed in the NPPES registry for Judy Hsu is (415) 391-9686.
- Does Judy Hsu accept Medicare?
- Judy Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Judy Hsu's NPI active?
- Yes — Judy Hsu's NPI (1043384050) is active in the NPPES registry as of the last update on 2017-01-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.