Thomas W. Brown, DO
Obstetrics & Gynecology Physician · Vacaville, CA
Thomas W. Brown, DO is an obstetrics & gynecology physician with a practice address in Vacaville, California, and NPI 1538247432, issued on Nov 1, 2006. Check the license (California 20A4130, as entered in NPPES) on the Medical Board of California; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Thomas W. Brown
- Credential
- DO
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 20A4130 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1 Quality Dr, Vacaville, CA 95688
- Phone
- (707) 453-5000
- Enumerated
- Nov 1, 2006
- Record last updated
- Aug 14, 2014 (not updated in 12 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 5,088 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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- Azim Ahmady, MDFamily Medicine Physician1417035916
- Lamia Alazzawi, PHARM.D.Pharmacist1407380645
- Delaine Alejandro, DOFamily Medicine Physician1487816294
Verify Thomas W. Brown in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A4130Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Thomas W. Brown among 5,088 obstetrics & gynecology physician records in California
Thomas W. Brown, DO is one of 5,088 obstetrics & gynecology physician records with a practice address in California. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 5% of them.
- NPI issued2006 · 5% of these records are older, 52% newer
- In a Medicare fileNo · 74% of these records are
- In the CMS Doctors and Clinicians fileNo · 53% of these records are
- Record last updated2014 · 64% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in California
There are 5,088 obstetrics & gynecology physician records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 5,088 in California → Every provider in Vacaville → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Camille Barnes, M.D.Vacaville, CA 956881174532667
- Hang Claus, M.D.Vacaville, CA 956881144594334
- Michelle Contreras, M.D.Vacaville, CA 956881730499252
- Ashleigh Denny, MDVacaville, CA 956881376801134
- Bruce Filarsky, MDVacaville, CA 956881477631299
- Elena Fuell Wysong, MDVacaville, CA 956881952842171
- James Hanser, MDVacaville, CA 956881538247341
- Lynne Hollison, MDVacaville, CA 956881750469573
Common questions
What is Thomas W. Brown, DO's NPI number?
Thomas W. Brown, DO's National Provider Identifier (NPI) is 1538247432, issued on Nov 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thomas W. Brown, DO located?
The NPPES record lists a practice address at 1 Quality Dr, Vacaville, CA, 95688. Phone: (707) 453-5000. Providers update this record themselves, so call before visiting.
How can I verify Thomas W. Brown, DO's license?
NPPES lists California license number 20A4130, 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.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.