Naiab Naser Chowdhury, MD
Family Medicine Physician · Vacaville, CA
Naiab Naser Chowdhury, MD is a family medicine physician with a practice address in Vacaville, California, and NPI 1558985234, issued on May 29, 2020. Check the license (California 187917, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Naiab Naser Chowdhury
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 187917 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr, Vacaville, CA 95688
- Phone
- (707) 624-4000
- Enumerated
- May 29, 2020
- Record last updated
- Aug 3, 2023
- Medicare enrollment
- Enrolled (PECOS I20230901000455); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 1 Quality Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Naiab Naser Chowdhury in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 187917Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% fewer Medicare Part D claims than the average family medicine physician in 2024
2,208 Medicare Part D claims for 384 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims. 70 claims were for opioids.
Most prescribed
- Atorvastatin Calcium139 claims
- Losartan Potassium102 claims
- Amlodipine Besylate85 claims
- Levothyroxine Sodium79 claims
- Albuterol Sulfate Hfa77 claims
- Lisinopril55 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 IncVallejo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Naiab Naser Chowdhury among 17,133 family medicine physician records in California
Naiab Naser Chowdhury, MD 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 2020, is newer than 88% of them.
- NPI issued2020 · 88% of these records are older, 9% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2013 · median 2005 among the 10,652 with a school on file
- Record last updated2023 · 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).
56 family medicine physician records list a practice address in Vacaville
They are 56 of the 1,903 NPPES records with a practice address in Vacaville, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Vacaville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Azim Ahmady, MDVacaville, CA 956881417035916
- Teresa Auyeung, MDVacaville, CA 956881780771154
- Raquel Cripe, M.D.Vacaville, CA 956881912922782
- Ricardo Denapoli, D.O.Vacaville, CA 956881295703189
- Peaslee Dumont, MDVacaville, CA 956881588748768
- Michael Earwood, MDVacaville, CA 956881932287828
- Gail Feinberg, DOVacaville, CA 956881194760025
- Behroz Hamkar, M.D.Vacaville, CA 956881073525036
Common questions
What is Naiab Naser Chowdhury, MD's NPI number?
Naiab Naser Chowdhury, MD's National Provider Identifier (NPI) is 1558985234, issued on May 29, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Naiab Naser Chowdhury, MD located?
The NPPES record lists a practice address at 1 Quality Dr, Vacaville, CA, 95688. Phone: (707) 624-4000. Providers update this record themselves, so call before visiting.
How can I verify Naiab Naser Chowdhury, MD's license?
NPPES lists California license number 187917, 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 Naiab Naser Chowdhury, MD prescribe under Medicare Part D?
In 2024, Naiab Naser Chowdhury, MD had 2,208 Medicare Part D claims for 384 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.