Mark A. Antonacci, MD
Emergency Medicine Physician · Fort Sam Houston, TX
Mark A. Antonacci, MD is an emergency medicine physician with a practice address in Fort Sam Houston, Texas, and NPI 1083673016, issued on Mar 20, 2006. Check the license (Texas P4138, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.
- Name
- Mark A. Antonacci
- Credential
- MD
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License numbers
- P4138 TX
ME82194 FL
Self-reported in NPPES; status is on the state search - Practice location
- 3551 Roger Brooke Dr, Fort Sam Houston, TX 78234
- Phone
- (850) 687-0316
- Enumerated
- Mar 20, 2006
- Record last updated
- Dec 5, 2024
- Medicaid ID
- 261491000 FL
- Medicare enrollment
- Enrolled (PECOS I20140929000575); may accept Medicare assignment
- Medical or professional school
- Uniformed Services Uhs Fe Hebert School Of Med, 1997
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 4,885 in Texas → Look up another NPI →
Also registered at 3551 Roger Brooke Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Adrianna Adams, LCSWClinical Social Worker1275265456
- John AdamsGeneral Practice Physician1134754898
- Jordan Adams, PAPhysician Assistant1336876598
- Oluwole Afuape, OTR/LOccupational Therapist1033593561
- Pierre Monverdy Agnant, MD, MPH, MBA, MACCInternal Medicine Physician1669868568
- Della Agquiz, PHARMDOncology Pharmacist1700538741
Verify Mark A. Antonacci in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersTexas Medical Board
Search for license P4138Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
77% fewer Medicare Part D claims than the average emergency medicine physician in 2024
53 Medicare Part D claims for 35 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D.
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
- Legacy Urgent Care PAFrisco, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mark A. Antonacci among 4,885 emergency medicine physician records in Texas
Mark A. Antonacci, MD 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 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 67% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1997 · median 2013 among the 2,779 with a school on file
- Record last updated2024 · 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
- Gary Dufresne, DOFort Sam Houston, TX 782341689664930
- 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
Common questions
What is Mark A. Antonacci, MD's NPI number?
Mark A. Antonacci, MD's National Provider Identifier (NPI) is 1083673016, issued on Mar 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Mark A. Antonacci, MD located?
The NPPES record lists a practice address at 3551 Roger Brooke Dr, Fort Sam Houston, TX, 78234. Phone: (850) 687-0316. Providers update this record themselves, so call before visiting.
How can I verify Mark A. Antonacci, MD's license?
NPPES lists Texas license number P4138, as entered by the provider. 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 Mark A. Antonacci, MD prescribe under Medicare Part D?
In 2024, Mark A. Antonacci, MD had 53 Medicare Part D claims for 35 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.