Marcum Gillis, MD
NPI 1053571620 · Gastroenterology Physician · Winston Salem, NC
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marcum Gillis, MD is a Gastroenterology Physician provider in Winston Salem, NC (NPI 1053571620).
Provider details
- NPI number
- 1053571620
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 2011-01846 (NC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
18 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
567 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 103 | $119 |
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 61 | $110 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 57 | $232 |
| 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'SG2211 | 57 | $16 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 53 | $154 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Pantoprazole Sodium | 897 | 273 |
| Omeprazole | 281 | 90 |
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 166 | 164 |
| Dicyclomine Hcl | 114 | 56 |
| Famotidine | 105 | 35 |
| Linaclotidebrand: Linzess | 89 | 29 |
| Nortriptyline Hcl | 65 | 11 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-06-16
- Last updated
- 2024-08-08
- Certified
- 2024-08-08
Frequently asked questions
- What is Marcum Gillis's NPI number?
- Marcum Gillis's National Provider Identifier (NPI) is 1053571620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marcum Gillis's specialty?
- Marcum Gillis is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Marcum Gillis located?
- Marcum Gillis's practice location on file with NPPES is 195 Kimel Park Dr Ste 200, Winston Salem, NC 27103-6967.
- What is Marcum Gillis's phone number?
- The practice phone number listed in the NPPES registry for Marcum Gillis is (336) 768-6211.
- Does Marcum Gillis accept Medicare?
- Marcum Gillis is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marcum Gillis's NPI active?
- Yes — Marcum Gillis's NPI (1053571620) is active in the NPPES registry as of the last update on 2024-08-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.