Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of October 4, 2026.
NPIDirectory

Dr. Mark A. Antonacci, MD

Individual provider Emergency Medicine Physician · NPI 1083673016

Dr. Mark A. Antonacci, MD practises Emergency Medicine in Fort Sam Houston, Texas. Graduated from Uniformed Services Uhs Fe Hebert School of Med in 1997, 29 years ago. Practices with Legacy Urgent Care PA, a 158-clinician group. Licensed in Florida and Texas.

Years since qualifying
29
Trained at
Uniformed Services Uhs Fe Hebert School of Med
Licensed in
FL, TX
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

3551 Roger Brooke Dr
Fort Sam Houston, TX 78234-4504
Phone: (850) 687-0316
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence P4138 (TX)
Emergency Medicine Physician Taxonomy 207P00000X · Licence ME82194 (FL)

Record details

NPI number1083673016
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 20, 2006
Last updated in NPPESDecember 5, 2024
Certification dateDecember 5, 2024

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIFORMED SERVICES UHS FE HEBERT SCHOOL OF MED
Graduated 1997 (29 years in practice)
Group practice Legacy Urgent Care Pa — 158 clinicians
Accepts Medicare assignment Not indicated

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients22
Services billed 428 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Colleagues at Legacy Urgent Care PA

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 158 clinicians in the practice; 12 are shown here.

Other providers in Fort Sam Houston