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

Terrence X O'Brien, MD, MS, FACC

Individual provider Cardiovascular Disease Physician · NPI 1578671525

Terrence X O'Brien, MD, MS, FACC is registered under Cardiovascular Disease (Cardiology) in Charleston, South Carolina. Graduated from University of California, San Diego School of Medicine in 1984, 42 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
42
Trained at
University of California, San Diego School of Medicine
Licensed in
SC
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MS — Master of Science
A graduate science degree.
FACC — Fellow of the American College of Cardiology
A cardiologist admitted as a fellow of the ACC.

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Practice location Address checks out

135 Rutledge St Ste 1201
Charleston, SC 29425-8903
Phone: (843) 792-2295
Fax: (843) 792-7771
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 16785 (SC)

Record details

NPI number1578671525
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MS , FACC
Sole proprietorNo
NPI enumeratedAugust 29, 2006
Last updated in NPPESOctober 22, 2020
Certification dateOctober 22, 2020

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Medical schoolUNIVERSITY OF CALIFORNIA, SAN DIEGO SCHOOL OF MEDICINE
Graduated 1984 (42 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 patients879
Services billed 1,871 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.

  • 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