Les Chuang, M.D.
NPI 1356355937 · Internal Medicine Physician · New York, NY
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Les Chuang, M.D. is a Internal Medicine Physician provider in New York, NY (NPI 1356355937).
Provider details
- NPI number
- 1356355937
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 233073 (NY)
Specialties & taxonomies
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
309 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 62 | $9 |
| Blood Test, Basic Group of Blood Chemicals (calcium, Total)80048 | 58 | $8 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 48 | $13 |
| Hemoglobin A1c Level83036 | 44 | $10 |
| Liver Function Blood Test Panel80076 | 33 | $8 |
| Urine Microalbumin (protein) Level82043 | 33 | $6 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 102 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 383 | 104 |
| Amlodipine Besylate | 345 | 88 |
| Empagliflozinbrand: Jardiance | 179 | 41 |
| Losartan Potassium | 145 | 43 |
| Fluticasone Propionate | 143 | 39 |
| Tamsulosin Hcl | 141 | 31 |
| Omeprazole |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-07-28
- Last updated
- 2007-07-08
Frequently asked questions
- What is Les Chuang's NPI number?
- Les Chuang's National Provider Identifier (NPI) is 1356355937, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Les Chuang's specialty?
- Les Chuang is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Les Chuang located?
- Les Chuang's practice location on file with NPPES is 227 Madison St, New York, NY 10002-7537.
- What is Les Chuang's phone number?
- The practice phone number listed in the NPPES registry for Les Chuang is (212) 238-7614.
- Does Les Chuang accept Medicare?
- Les Chuang is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Les Chuang's NPI active?
- Yes — Les Chuang's NPI (1356355937) 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.