Irene Roy Chowdhury, D.O.
Family Medicine Physician · Pleasanton, CA
Irene Roy Chowdhury, D.O. is a family medicine physician with a practice address in Pleasanton, California, and NPI 1750941712, issued on Jun 20, 2019. Check the license (California 20A19558, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Irene Roy Chowdhury
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A19558 CA
Self-reported in NPPES; status is on the state search - Practice location
- 7601 Stoneridge Dr, Pleasanton, CA 94588
- Phone
- (925) 847-5100
- Enumerated
- Jun 20, 2019
- Record last updated
- Aug 19, 2022
- Medicare enrollment
- Enrolled (PECOS I20221202002246); accepts Medicare assignment
- Medical or professional school
- Des Moines University Of Osteopathic Medicine And Health Sciences, 2019
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 7601 Stoneridge Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Yvonne Alger, NPWomen's Health Nurse Practitioner1083609283
- Ana Amog, MDInternal Medicine Physician1083766893
- Deborah Ansley, MDObstetrics & Gynecology Physician1336227412
- Laura Balassone, R.N.P.Adult Health Nurse Practitioner1063523843
- Parvathi Banda, MDInternal Medicine Physician1932247939
- Vijay Bhat, M.D.Internal Medicine Physician1689120560
Verify Irene Roy Chowdhury in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A19558Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
42% fewer Medicare Part D claims than the average family medicine physician in 2024
2,071 Medicare Part D claims for 350 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims. 83 claims were for opioids.
Most prescribed
- Atorvastatin Calcium150 claims
- Losartan Potassium107 claims
- Amlodipine Besylate92 claims
- Lisinopril81 claims
- Levothyroxine Sodium69 claims
- Metformin Hcl64 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Permanente Medical Group IncPleasanton, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irene Roy Chowdhury among 17,133 family medicine physician records in California
Irene Roy Chowdhury, D.O. is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 12% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2019 · median 2005 among the 10,652 with a school on file
- Record last updated2022 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
42 family medicine physician records list a practice address in Pleasanton
They are 42 of the 2,213 NPPES records with a practice address in Pleasanton, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Pleasanton → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Jennifer Candelaria, MDPleasanton, CA 945881093934713
- Patricia Carter, M.D.Pleasanton, CA 945881952336968
- Leyla Gahrahmat, M.D.Pleasanton, CA 945881023199890
- Madhu Gupta, M.D.Pleasanton, CA 945881265628473
- Susan Hsu, M.D.Pleasanton, CA 945881679631634
- Meghana Kasetty, MDPleasanton, CA 945881063421592
- Cho Cho Lay, MDPleasanton, CA 945881982681524
- Jonathan Lim, MDPleasanton, CA 945881124028733
Common questions
What is Irene Roy Chowdhury, D.O.'s NPI number?
Irene Roy Chowdhury, D.O.'s National Provider Identifier (NPI) is 1750941712, issued on Jun 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Irene Roy Chowdhury, D.O. located?
The NPPES record lists a practice address at 7601 Stoneridge Dr, Pleasanton, CA, 94588. Phone: (925) 847-5100. Providers update this record themselves, so call before visiting.
How can I verify Irene Roy Chowdhury, D.O.'s license?
NPPES lists California license number 20A19558, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Irene Roy Chowdhury, D.O. prescribe under Medicare Part D?
In 2024, Irene Roy Chowdhury, D.O. had 2,071 Medicare Part D claims for 350 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.