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

William Merrill Warren III, MD

Individual provider Anesthesiology Physician · NPI 1922232610

William Merrill Warren III, MD is an Anesthesiology in Greenville, South Carolina. Graduated from University of Alabama School of Medicine in 2009, 17 years ago. Practices with Prisma Health University Medical Group, a 2,446-clinician group and accepts Medicare assignment. Licensed in Alabama and South Carolina.

Years since qualifying
17
Trained at
University of Alabama School of Medicine
Licensed in
AL, SC
In the registry since
2009
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

67 Creekside Park Ct
Greenville, SC 29615-4810
Phone: (864) 522-3700
Fax: (864) 522-3705
Show map & directions

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

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence 40510 (SC)
Anesthesiology Physician Taxonomy 207L00000X · Licence 30718 (AL)

Record details

NPI number1922232610
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 8, 2009
Last updated in NPPESMay 7, 2021
Certification dateMay 7, 2021

Medicare enrollment

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

Medicare specialtyANESTHESIOLOGY
Medical schoolUNIVERSITY OF ALABAMA SCHOOL OF MEDICINE
Graduated 2009 (17 years in practice)
Group practice Prisma Health University Medical Group — 2446 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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