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

Gregory Thomas Squires, MD

Individual provider Critical Care Medicine (Anesthesiology) Physician · NPI 1083679831

Gregory Thomas Squires, MD practises General Surgery in Charleston, South Carolina. Graduated from Medical University of South Carolina College of Medicine in 1993, 33 years ago. Practices with University Medical Associates of the Medical University of South Carol, a 1,640-clinician group and accepts Medicare assignment. Licensed in South Carolina.

Years since qualifying
33
Trained at
Medical University of South Carolina College of Medicine
Licensed in
SC
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

171 Ashley Ave
Charleston, SC 29425-0100
Phone: (843) 792-1414
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Critical Care Medicine (Anesthesiology) Physician (primary) Taxonomy 207LC0200X · Licence 21090 (SC)
Surgery Physician Taxonomy 208600000X · Licence 021090 (SC)

Record details

NPI number1083679831
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 17, 2006
Last updated in NPPESOctober 8, 2024
Certification dateOctober 8, 2024

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesCRITICAL CARE (INTENSIVISTS)
Medical schoolMEDICAL UNIVERSITY OF SOUTH CAROLINA COLLEGE OF MEDICINE
Graduated 1993 (33 years in practice)
Group practice University Medical Associates Of The Medical University Of South Carol — 1640 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 patients17
Services billed 47 a service is one billed item, such as a visit, a test or a procedure
Average patient age73

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Food and Beverage $154 1 payment · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

  • Musc Medical Center Hospital · Charleston, SC

Colleagues at University Medical Associates of the Medical University of South Carol

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1640 clinicians in the practice; 12 are shown here.

Other providers in Charleston