Gary William Dufresne, DO
Emergency Medicine Physician · Fort Sam Houston, TX
Gary William Dufresne, DO is an emergency medicine physician with a practice address in Fort Sam Houston, Texas, and NPI 1689664930, issued on Oct 27, 2005. Check the license on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Gary William Dufresne
- Credential
- DO
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 02002851A IN
Self-reported in NPPES; status is on the state search - Practice location
- 3851 Roger Brooke Dr, Fort Sam Houston, TX 78234
- Phone
- (210) 916-2460
- Enumerated
- Oct 27, 2005
- Record last updated
- Jul 13, 2026
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 3851 Roger Brooke Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Francis Agyapong, NPAcute Care Nurse Practitioner1013056704
- Abad Ahmed, PHYSICIAN ASSISTANTMedical Physician Assistant1578532321
- Anthony Allen, M.D.Vascular & Interventional Radiology Physician1104815174
- Paul Allen, PA-C, MPAS, DSC EMPAMedical Physician Assistant1922065234
- Angela Allerman, PHARM.D.Pharmacotherapy Pharmacist1376879098
- Bryan Alsip, M.D., M.P.H.Public Health & General Preventive Medicine Physician1366431314
Verify Gary William Dufresne in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical BoardCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
4% more Medicare Part D claims than the average emergency medicine physician in 2024
234 Medicare Part D claims for 115 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 38 claims were for opioids.
Most prescribed
- Hydrocodone-Acetaminophen32 claims
- Ondansetron Odt29 claims
- Methylprednisolone28 claims
- Cefdinir20 claims
- Cyclobenzaprine Hcl14 claims
- Naproxen12 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.
Gary William Dufresne among 4,885 emergency medicine physician records in Texas
Gary William Dufresne, DO is one of 4,885 emergency medicine physician records with a practice address in Texas. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2026 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
84 emergency medicine physician records list a practice address in Fort Sam Houston
They are 84 of the 2,124 NPPES records with a practice address in Fort Sam Houston, and 4,885 emergency medicine physician records in Texas.
All 4,885 in Texas → Every provider in Fort Sam Houston → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Eric Chin, M.D.Fort Sam Houston, TX 782341447240411
- Marc Daymude, M.D.Fort Sam Houston, TX 782341821089806
- David Foss, MDSan Antonio, TX 782341669454880
- Guyon Hill, M.D.Fort Sam Houston, TX 782341629059316
- Michael Hilliard, MDFort Sam Houston, TX 782341538140397
- Curtis Hunter, M.D.Fort Sam Houston, TX 782341447241427
- Sean Meadows, M.D.Fort Sam Houston, TX 782341770560039
- Dan Mosely, M.D.Fort Sam Houston, TX 782341437135282
Common questions
What is Gary William Dufresne, DO's NPI number?
Gary William Dufresne, DO's National Provider Identifier (NPI) is 1689664930, issued on Oct 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is Gary William Dufresne, DO located?
The NPPES record lists a practice address at 3851 Roger Brooke Dr, Fort Sam Houston, TX, 78234. Phone: (210) 916-2460. Providers update this record themselves, so call before visiting.
How can I verify Gary William Dufresne, DO's license?
Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary William Dufresne, DO prescribe under Medicare Part D?
In 2024, Gary William Dufresne, DO had 234 Medicare Part D claims for 115 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.