Chia-Yuan Hsu
NPI 1154909828 · Internal Medicine Physician · Saint Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chia-Yuan Hsu is a Internal Medicine Physician provider in Saint Louis, MO (NPI 1154909828).
Provider details
- NPI number
- 1154909828
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Sex
- Male
- Sole proprietor
- Yes
- License
- 2023050310 (MO)
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
5 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 · 39 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 112 | 61 |
| Atorvastatin Calcium | 86 | 70 |
| Amlodipine Besylate | 75 | 67 |
| Losartan Potassium | 53 | 40 |
| Gabapentin | 47 | 35 |
| Fluticasone Propion/Salmeterolbrand: Fluticasone-Salmeterol | 38 | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$467 across 13 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
- 2021-04-01
- Last updated
- 2024-04-24
- Certified
- 2024-04-24
Frequently asked questions
- What is Chia-Yuan Hsu's NPI number?
- Chia-Yuan Hsu's National Provider Identifier (NPI) is 1154909828, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chia-Yuan Hsu's specialty?
- Chia-Yuan Hsu is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chia-Yuan Hsu located?
- Chia-Yuan Hsu's practice location on file with NPPES is 3721 S Grand Blvd, Saint Louis, MO 63118-3405.
- What is Chia-Yuan Hsu's phone number?
- The practice phone number listed in the NPPES registry for Chia-Yuan Hsu is (314) 328-0144.
- Does Chia-Yuan Hsu accept Medicare?
- Chia-Yuan Hsu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chia-Yuan Hsu's NPI active?
- Yes — Chia-Yuan Hsu's NPI (1154909828) is active in the NPPES registry as of the last update on 2024-04-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.