John Hsu, MD
NPI 1649339300 · Family Medicine Physician · Harbor City, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Hsu, MD is a Family Medicine Physician provider in Harbor City, CA (NPI 1649339300).
Provider details
- NPI number
- 1649339300
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A55731 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 · 79 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 715 | 279 |
| Amlodipine Besylate | 324 | 148 |
| Lisinopril | 265 | 94 |
| Losartan Potassium | 199 | 91 |
| Hydrochlorothiazide | 179 | 76 |
| Glipizide | 136 | 63 |
| Simvastatin | 132 | 54 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$29 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
- 2006-12-08
- Last updated
- 2021-12-02
Frequently asked questions
- What is John Hsu's NPI number?
- John Hsu's National Provider Identifier (NPI) is 1649339300, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Hsu's specialty?
- John Hsu is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Hsu located?
- John Hsu's practice location on file with NPPES is 25825 Vermont Ave, Harbor City, CA 90710-3518.
- What is John Hsu's phone number?
- The practice phone number listed in the NPPES registry for John Hsu is (310) 325-5111.
- Does John Hsu accept Medicare?
- John Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Hsu's NPI active?
- Yes — John Hsu's NPI (1649339300) is active in the NPPES registry as of the last update on 2021-12-02.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.