Marcum G. Gillis, MD
Gastroenterology Physician · Winston Salem, NC
Marcum G. Gillis, MD is a gastroenterology physician with a practice address in Winston Salem, North Carolina, and NPI 1053571620, issued on Jun 16, 2008. Check the license (North Carolina 2011-01846, as entered in NPPES) on the North Carolina Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marcum G. Gillis
- Credential
- MD
- Primary taxonomy
- Gastroenterology Physician 207RG0100X
- License number
- 2011-01846 NC
Self-reported in NPPES; status is on the state search - Practice location
- 195 Kimel Park Dr Ste 200, Winston Salem, NC 27103
- Phone
- (336) 768-6211
- Enumerated
- Jun 16, 2008
- Record last updated
- Aug 8, 2024
- Fax
- (336) 768-6869
- Medicaid ID
- 1053571620 NC
- Medicare enrollment
- Enrolled (PECOS I20140801001420); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest gastroenterology physician records → All 681 in North Carolina → Look up another NPI →
Also registered at 195 Kimel Park Dr Ste 200
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Murat Akdamar, MDGastroenterology Physician1386678225
- Tilak BabaInternal Medicine Physician1093058307
- Gregory Barton, PA-CPhysician Assistant1407890080
- William Bray, MDGastroenterology Physician1952345951
- Amanda Cairnes, PAPhysician Assistant1720759145
- Marissa Caperilla, PAPhysician Assistant1427734359
Verify Marcum G. Gillis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNorth Carolina Medical Board
Search for license 2011-01846Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average gastroenterology physician in 2024
2,542 Medicare Part D claims for 691 beneficiaries, against an average of 811 among the 16,445 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Pantoprazole Sodium897 claims
- Omeprazole281 claims
- Sod Sulf-Potass Sulf-Mag Sulf166 claims
- Dicyclomine Hcl114 claims
- Famotidine105 claims
- Linzess89 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.5 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through one group practice
- Digestive Health Specialists PAWinston Salem, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marcum G. Gillis among 681 gastroenterology physician records in North Carolina
Marcum G. Gillis, MD is one of 681 gastroenterology physician records with a practice address in North Carolina. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 62% of them.
- NPI issued2008 · 62% of these records are older, 33% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 73% of these records are
- Graduated2008 · median 2002 among the 498 with a school on file
- Record last updated2024 · 48% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RG0100X and a North Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Gastroenterology Physician providers in North Carolina
There are 681 gastroenterology physician records in North Carolina.
All 681 in North Carolina → Every provider in Winston Salem → Gastroenterology Physician nationwide →
The 8 gastroenterology physician records with the nearest ZIP codes
- Murat Akdamar, MDWinston Salem, NC 271031386678225
- William Bray, MDWinston Salem, NC 271031952345951
- Christopher Connolley, M.D.Winston Salem, NC 271031396702767
- James Gibbs, MDWinston Salem, NC 271031124132022
- Sean Harris, M.D.Winston Salem, NC 271031558328492
- Robert Holmes, M.D.Winston Salem, NC 271031306803234
- Charles McMurchy, MDWinston Salem, NC 271031417998279
- Henry Mixon, MDWinston Salem, NC 271031801900709
Common questions
What is Marcum G. Gillis, MD's NPI number?
Marcum G. Gillis, MD's National Provider Identifier (NPI) is 1053571620, issued on Jun 16, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Marcum G. Gillis, MD located?
The NPPES record lists a practice address at 195 Kimel Park Dr Ste 200, Winston Salem, NC, 27103. Phone: (336) 768-6211. Providers update this record themselves, so call before visiting.
How can I verify Marcum G. Gillis, MD's license?
NPPES lists North Carolina license number 2011-01846, as entered by the provider. Search the North Carolina Medical Board at https://portal.ncmedboard.org/verification/search.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marcum G. Gillis, MD prescribe under Medicare Part D?
In 2024, Marcum G. Gillis, MD had 2,542 Medicare Part D claims for 691 beneficiaries; the average among gastroenterology physician prescribers was 811. Part D covers Medicare prescriptions only.
What is Marcum G. Gillis, MD's MIPS final score?
The 2023 MIPS final score is 86.5 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.