Dr. Masuma Chowdhury, MD
- Medicare services, 2016
- 21
- Medicare patients, 2024
- 14
- Part D claims, 2024
- 8,413
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 500 NE Multnomah St, Portland, OR 97232
- Practice phone
- Call (503) 813-2440
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Kaiser Foundation Health Plan of the Northwest
Portland, Oregon
Find Dr. Chowdhury's professional email, personal email and mobile number
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Dr. Masuma Chowdhury is an internist in Portland, Oregon
Dr. Chowdhury practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon.
Dr. Chowdhury's NPI, 1861572604, was assigned on October 16, 2006. Dr. Chowdhury holds Oregon license MD26859.
- NPI
- 1861572604NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294831228
- NPI enumeration date
- October 16, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (503) 813-2440
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 58
- Medical school graduation
- 1994
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Masuma Chowdhury practices at Kaiser Foundation Health Plan of the Northwest in Portland, Oregon
Dr. Chowdhury's primary practice is Kaiser Foundation Health Plan of the Northwest, at 500 NE Multnomah St, Portland, OR 97232 in Multnomah County. The practice phone is (503) 813-2440.
- Kaiser Foundation Health Plan of the Northwest500 NE Multnomah St, Portland, OR 97232 · Multnomah CountyPhone(503) 813-2440
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Masuma Chowdhury is affiliated with 2 sites of care and 1 medical group
Dr. Chowdhury's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. The medical group on file is Kaiser Permanente Northwest. Dmand AI also links Dr. Chowdhury to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Masuma Chowdhury's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Chowdhury practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Kaiser Foundation Health Plan of the Northwest | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Masuma Chowdhury is one of 1,680 internists in Oregon
Internal medicine is Dr. Chowdhury's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Chowdhury is licensed in Oregon.
Specialties and state licenses
- Internal medicine, OregonPrimary
Internists near Dr. Chowdhury
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Masuma Chowdhury billed Medicare for 21 services in 2016
CMS data shows 21 Medicare services from Dr. Chowdhury across 1 procedure code in 2016, all of them office visits, for 14 Medicare patients. Medicare paid $1,204 for them. Every service was in an office.
Dr. Chowdhury compared with the Oregon median for internists, 2016
- Dr. Chowdhury
- Oregon median
- Medicare services
- 21vs 30093% below
- Medicare patients
- 14vs 13289% below
- Part D claims
- 7,795vs 22235.1 times
Medians across 1,791 internists in Oregon with Dmand AI profiles that report each measure.
Dr. Chowdhury's most billed Medicare procedure codes, 2016
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Chowdhury and other internists in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Masuma Chowdhury treated 14 Medicare patients in 2024, average age 69
CMS counts 14 Medicare patients who saw Dr. Chowdhury in 2024. Their average risk score is 1.36, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Chowdhury's median patient age at 53, with 68% women.
Dr. Chowdhury's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women68%
- Men32%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Masuma Chowdhury wrote 8,413 Medicare Part D claims in 2024
In 2024, Dr. Chowdhury wrote 8,413 Medicare Part D claims for 874 patients. 88% of them were for generic drugs. CMS names the drug for 7,795 of them, across 115 drugs with 11 or more claims each, at $328,557 in total drug cost. In 2023, CMS named 7,267 claims across 111 drugs.
Dr. Chowdhury's Part D claims by kind of drug, 2024
- Generic7,415 claims88%
- Brand-name885 claims11%
- Other113 claims1%
Dr. Chowdhury's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Chowdhury's Part D claims, 2024
- Opioids4%359 of 8,413 claims
- Antibiotics1%95 of 8,413 claims
- Antipsychotics, patients 65 and over0%18 of 8,413 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 7,2672024: 7,7957%
Drugs named by CMS: 115 in 2024, 111 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Dr. Masuma Chowdhury takes part in Medicare
Dr. Chowdhury accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Sources for Dr. Masuma Chowdhury's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Masuma Chowdhury
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Masuma Chowdhury's NPI number?
Dr. Masuma Chowdhury's NPI number is 1861572604. It was assigned on October 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Masuma Chowdhury?
Dr. Masuma Chowdhury is an internist in Portland, Oregon. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Masuma Chowdhury practice?
Dr. Chowdhury practices at 500 NE Multnomah St, Portland, OR 97232. Dr. Chowdhury's primary practice is Kaiser Foundation Health Plan of the Northwest in Portland, Oregon. Dmand AI also links Dr. Chowdhury to 1 group practice or clinic.
What is Dr. Masuma Chowdhury's office phone number?
The practice phone on file for Dr. Chowdhury is (503) 813-2440.
What is Dr. Masuma Chowdhury's medical license number?
Dr. Chowdhury holds Oregon license MD26859.
What medical group is Dr. Masuma Chowdhury part of?
Dr. Chowdhury is linked to Kaiser Permanente Northwest.
Does Dr. Masuma Chowdhury accept Medicare?
Yes. CMS data shows Dr. Chowdhury billed Medicare for 21 services in 2016, and Dr. Chowdhury accepts Medicare assignment.
How many Medicare patients does Dr. Masuma Chowdhury see?
CMS counts 14 Medicare patients who saw Dr. Chowdhury in 2024, with an average age of 69.
What services does Dr. Masuma Chowdhury bill to Medicare?
In 2016, Dr. Chowdhury's most billed Medicare services were office visit, established patient (99214).
What drugs does Dr. Masuma Chowdhury prescribe most?
In 2024 Medicare Part D data, Dr. Chowdhury's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Lisinopril.
How long has Dr. Masuma Chowdhury been practicing?
Dr. Chowdhury graduated from medical school in 1994, 32 years ago.
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