Howard Hsu, M.D.
NPI 1336376714 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Howard Hsu, M.D. is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1336376714).
Provider details
- NPI number
- 1336376714
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 2012021325 (MO)
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
17 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
1,264 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 | 171 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 149 | $8 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 148 | $10 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 125 | $123 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 103 | $124 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 92 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 176 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 615 | 165 |
| Lisinopril | 521 | 136 |
| Amlodipine Besylate | 517 | 136 |
| Pantoprazole Sodium | 441 | 136 |
| Levothyroxine Sodium | 410 | 110 |
| Losartan Potassium | 375 | 100 |
| Meloxicam |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,735 across 97 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
- 2009-06-12
- Last updated
- 2012-09-21
Frequently asked questions
- What is Howard Hsu's NPI number?
- Howard Hsu's National Provider Identifier (NPI) is 1336376714, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Howard Hsu's specialty?
- Howard Hsu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Howard Hsu located?
- Howard Hsu's practice location on file with NPPES is 12345 W Bend Dr, Saint Louis, MO 63128-2182.
- What is Howard Hsu's phone number?
- The practice phone number listed in the NPPES registry for Howard Hsu is (314) 849-6000.
- Does Howard Hsu accept Medicare?
- Howard Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Howard Hsu's NPI active?
- Yes — Howard Hsu's NPI (1336376714) is active in the NPPES registry as of the last update on 2012-09-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.