Marcum G. Gillis

Medicare activity in 2024

Official CMS public-use data for Marcum G. Gillis, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.

Most frequent services

1. Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)103 services
2. Biopsy of large bowel using a flexible endoscope (45380)75 services
3. Removal of polyps or growths of large bowel using an endoscope with mechanical snare (45385)72 services
4. Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope (43239)59 services
5. Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)57 services

Chronic conditions among these patients

Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).

• High cholesterol75%
• High blood pressure72%
• Arthritis52%
• Diabetes33%
• Anxiety31%
• Depression30%

Hospitals where Marcum G. Gillis works

Medicare's Facility Affiliation Data lists Marcum G. Gillis at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.

• Novant Health Forsyth Medical CenterWinston-Salem, NC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 340014

Practice locations

Addresses where Marcum G. Gillis is enrolled with Medicare (CMS data updated October 2, 2026).

• 195 Kimel Park Dr, Suite 200Winston Salem, NC 27103 (336) 768‑6211
• 434 Kirby RdKing, NC 27021 (336) 768‑6211

Group practices

Medicare enrollment lists Marcum G. Gillis as a member of this group (CMS data updated October 2, 2026).

• Digestive Health Specialists PA26 clinicians in the group

Specialties

• Gastroenterologyprimary
• Internal Medicinealso

Find other Gastroenterology doctors in North Carolina →

Other gastroenterologists in Winston Salem

Clinicians with the same Medicare primary specialty in Winston Salem, NC — not a recommendation.

• John T. Sweeney, MD
• Ravi S. Shah, MD
• Michael M. Gaspari, MD
• Jason D. Conway, MD
• Scott L. Cornella, MD
• Ryan L. McKimmie, MD
• William A. Bigelow, MD
• Carles R. Surles

All gastroenterologists in Winston Salem →

Other clinicians in Digestive Health Specialists PA

Medicare enrollment lists these clinicians in the same group practice — not a recommendation.

• Nicholas J. Koutlas, MD
• Murat K. Akdamar, MD
• Christopher T. Jue, MD
• Dhyan P. Rajan, MD
• Michael G. Noujaim, MD
• Apsara J. Prasad, MD

Clinician information

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
2. Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
3. National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
4. Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
5. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
6. Medicare Care Compare — official Medicare tool to look up clinicians