Masuma Chowdhury, M.D.
NPI 1861572604 · Internal Medicine Physician · Hillsboro, OR
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Masuma Chowdhury, M.D. is a Internal Medicine Physician provider in Hillsboro, OR (NPI 1861572604).
Provider details
- NPI number
- 1861572604
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- MD26859 (OR)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 116 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 704 | 219 |
| Levothyroxine Sodium | 373 | 88 |
| Lisinopril | 351 | 118 |
| Losartan Potassium | 318 | 101 |
| Simvastatin | 300 | 92 |
| Amlodipine Besylate | 248 | 85 |
| Gabapentin | 217 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-10-16
- Last updated
- 2008-05-19
Frequently asked questions
- What is Masuma Chowdhury's NPI number?
- Masuma Chowdhury's National Provider Identifier (NPI) is 1861572604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Masuma Chowdhury's specialty?
- Masuma Chowdhury is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Masuma Chowdhury located?
- Masuma Chowdhury's practice location on file with NPPES is 364 Se 8th Ave, Hillsboro, OR 97123-4253.
- What is Masuma Chowdhury's phone number?
- The practice phone number listed in the NPPES registry for Masuma Chowdhury is (503) 681-4233.
- Does Masuma Chowdhury accept Medicare?
- Masuma Chowdhury is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Masuma Chowdhury's NPI active?
- Yes — Masuma Chowdhury's NPI (1861572604) is active in the NPPES registry as of the last update on 2008-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.