Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Sandra L Mostaccio-Sweeney, MD

Individual provider Internal Medicine Physician · NPI 1689695199

Sandra L Mostaccio-Sweeney, MD practises Internal Medicine in Dallas, Texas. Qualified in 1993, 33 years ago. Practices with Em Alliance Texas PLLC, a 89-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Maine, Texas and Washington.

Years since qualifying
33
Licensed in
ME, TX, WA
In the registry since
2006
Specialties on file
3
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

1717 Main St Suuite 5200
Dallas, TX 75201-4612
Phone: (800) 527-2145
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 35 Medical Center Pkwy, Augusta, ME 04330-8160 — (207) 248-5000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence N4603 (TX)
Internal Medicine Physician Taxonomy 207R00000X · Licence MD60166404 (WA)
Emergency Medicine Physician Taxonomy 207P00000X · Licence MD30717 (ME)

Record details

NPI number1689695199
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2006
Last updated in NPPESJuly 28, 2026
Certification dateJuly 28, 2026

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1993 (33 years in practice)
Group practice Em Alliance Texas Pllc — 89 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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 patients116
Services billed 139 a service is one billed item, such as a visit, a test or a procedure
Average patient age75

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.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

  • Memorial Hospital, The Hospital · Craig, CO · listed as The Memorial Hospital
  • Baptist Neighborhood Hospital Thousand Oaks Hospital · San Antonio, TX
  • Hca Florida South Shore Hospital Hospital · Sun City Center, FL
  • Northwest Texas Hospital Hospital · Amarillo, TX

Colleagues at Em Alliance Texas PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 89 clinicians in the practice; 12 are shown here.

Other providers in Dallas