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

William C. Sullivan, MD

Individual provider Family Medicine Physician · NPI 1427018381

William C. Sullivan, MD is a Family Medicine Physician in Winston Salem, North Carolina. Licensed in North Carolina. Registered with an NPI since 2006.

Licensed in
NC
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.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

3333 Silas Creek Pkwy Dba Inpatient Physicians Of Forsyth
Winston Salem, NC 27103-3013
Phone: (336) 718-7080
Fax: (336) 718-9622
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 9500738 (NC)
Family Medicine Physician Taxonomy 207Q00000X · Licence 95-00738 (NC)

Record details

NPI number1427018381
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 24, 2006
Last updated in NPPESOctober 25, 2020
Certification dateSeptember 6, 2020

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 patients138
Services billed 525 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Other providers in Winston Salem