Chau L Chen, MD
NPI 1760570071 · Internal Medicine Physician · St Louis, MO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Chau L Chen, MD is a Internal Medicine Physician provider in St Louis, MO (NPI 1760570071).
Provider details
- NPI number
- 1760570071
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- C51929 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
64 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 48 | $87 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 16 | $124 |
Typical Medicare-allowed amounts for these services range $87–$124 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 43 | 11 |
| Amlodipine Besylate | 40 | — |
| Metformin Hcl | 37 | — |
| Glipizidebrand: Glipizide Er | 29 | — |
| Azithromycin | 17 | — |
| Losartan Potassium | 17 | — |
| Triamterene/Hydrochlorothiazidbrand: Triamterene-Hydrochlorothiazid |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-11
- Last updated
- 2007-07-08
Frequently asked questions
- What is Chau L Chen's NPI number?
- Chau L Chen's National Provider Identifier (NPI) is 1760570071, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Chau L Chen's specialty?
- Chau L Chen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Chau L Chen located?
- Chau L Chen's practice location on file with NPPES is 8401 Olive Blvd, St Louis, MO 63132.
- What is Chau L Chen's phone number?
- The practice phone number listed in the NPPES registry for Chau L Chen is (314) 997-3430.
- Does Chau L Chen accept Medicare?
- Chau L Chen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Chau L Chen's NPI active?
- Yes — Chau L Chen's NPI (1760570071) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.