James Chou, MD
NPI 1285661652 · Gastroenterology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
James Chou, MD is a Gastroenterology Physician provider in Boston, MA (NPI 1285661652).
Provider details
- NPI number
- 1285661652
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 217013 (MA)
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
571 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) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 67 | $408 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 63 | $140 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 62 | $9 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 60 | $6 |
| Blood Creatinine Level82565 | 46 | $5 |
| Liver Function Blood Test Panel80076 | 40 | $8 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 22 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Omeprazole | 205 | 76 |
| Famotidine | 177 | 66 |
| Pantoprazole Sodium | 119 | 34 |
| Lansoprazole | 106 | 28 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-C | 87 | 86 |
| Linaclotidebrand: Linzess | 77 | 19 |
| Peg3350/Sod Sul/Nacl/Kcl/Asb/Cbrand: Peg3350-Sod Sul-Nacl-Kcl-Asb-C | 70 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-28
- Last updated
- 2021-02-04
- Certified
- 2021-02-04
Frequently asked questions
- What is James Chou's NPI number?
- James Chou's National Provider Identifier (NPI) is 1285661652, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is James Chou's specialty?
- James Chou is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is James Chou located?
- James Chou's practice location on file with NPPES is 133 Brookline Ave Fl 9, Boston, MA 02215-3904.
- What is James Chou's phone number?
- The practice phone number listed in the NPPES registry for James Chou is (617) 421-1091.
- Does James Chou accept Medicare?
- James Chou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is James Chou's NPI active?
- Yes — James Chou's NPI (1285661652) is active in the NPPES registry as of the last update on 2021-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.