William MarstellerM.D.
Gastroenterology·Charleston, SC
William Marsteller, M.D. is a Gastroenterology provider in Charleston, SC affiliated with 5 ambulatory surgery centers in SC, as of July 2026.
- NPI1992917504
- Registered2007
- Centers5
- StateSC
- Class of2006
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
- Summerville Endoscopy CenterSummerville, SC · Gastroenterology · 1 on panelView center →
- Charleston Endoscopy CenterCharleston, SC · Gastroenterology · 30 on panelView center →
- Low Country Endoscopy CenterSummerville, SC · Gastroenterology · 1 on panelView center →
- Palmetto Endoscopy Center LLCCharleston, SC · Gastroenterology · 30 on panelView center →
- Charleston Ent Associates LLC Dba Surgery Center Of CharlestonCharleston, SC · ENT, Gastroenterology · 30 on panelView center →
Education
Education on record as of August 2026.
William Marsteller at a glance
- Provider
- William Marsteller
- Credential
- M.D.
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Charleston, SC
- Medical school
- Ohio State University College of Medicine
- Graduated
- 2006
- NPI registered
- 2007
- NPI
- 1992917504
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does William Marsteller practice?
William Marsteller, M.D. is based in Charleston, SC and is affiliated with 5 ambulatory surgery centers: Summerville Endoscopy Center in Summerville, SC, Charleston Endoscopy Center in Charleston, SC, Low Country Endoscopy Center in Summerville, SC, Palmetto Endoscopy Center LLC in Charleston, SC, and Charleston Ent Associates LLC Dba Surgery Center Of Charleston in Charleston, SC. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is William Marsteller's NPI number?
William Marsteller's National Provider Identifier (NPI) is 1992917504, registered in 2007. Specialty on record: Gastroenterology; credential M.D.
Where did William Marsteller go to medical school?
William Marsteller, M.D. attended Ohio State University College of Medicine, graduating in 2006.
How many Gastroenterology providers in South Carolina work at ambulatory surgery centers?
88 Gastroenterology surgeons and proceduralists in South Carolina are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, William Marsteller among them. The South Carolina Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
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