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

Sam T. Ontiveros, MD

Individual provider Emergency Medicine Physician · NPI 1538522396

Sam T. Ontiveros, MD is an Emergency Medicine Physician in Charleston, South Carolina. Works from 3 locations. Licensed in California and South Carolina.

Licensed in
CA, SC
In the registry since
2016
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 29425-8908
Phone: (843) 792-1414
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 200 W Arbor Dr, San Diego, CA 92103-9000 — (800) 926-8273
  • 55 Lake Ave N, Worcester, MA 01655-0002 — (508) 334-1000

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 85834 (SC)
Emergency Medicine Physician Taxonomy 207P00000X · Licence A162448 (CA)

Record details

NPI number1538522396
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 30, 2016
Last updated in NPPESOctober 27, 2023
Certification dateMarch 14, 2022

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 patients13
Services billed 15 a service is one billed item, such as a visit, a test or a procedure
Average patient age67

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.

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