Quick answers
- Does Gregory B. Summerville accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory B. Summerville accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Gregory B. Summerville see?
- In 2024, CMS data shows 356 Original Medicare patients and 2,142 services for Gregory B. Summerville. This counts Original Medicare only and measures volume, not quality.
- What is Gregory B. Summerville's NPI number?
- 1053653337. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Gregory B. Summerville, 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.
| Original Medicare patients | 356 |
|---|---|
| Services billed to Medicare | 2,142 |
| Different services or procedures | 28 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Injection, triamcinolone acetonide, not otherwise specified, 10 mg (J3301)518 services
- Aspiration and/or injection of fluid large joint using ultrasound guidance (20611)231 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)209 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)189 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)60 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).
- Arthritis75%
- High blood pressure67%
- High cholesterol64%
- Depression21%
- Anxiety21%
- Diabetes17%
Hospitals where Gregory B. Summerville works
Medicare's Facility Affiliation Data lists Gregory B. Summerville 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.
- Chatham Hospital IncSiler City, NC · Critical Access Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 341311
- UNC HospitalsChapel Hill, NC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 340061
Practice locations
Addresses where Gregory B. Summerville is enrolled with Medicare (CMS data updated October 2, 2026).
- 101 Manning DrChapel Hill, NC 27514
- 1129 Weaver Dairy RdChapel Hill, NC 27514 (919) 968‑5959
- 1129 Weaver Dairy Rd, Suite NChapel Hill, NC 27514 (919) 968‑5959
- 475 Progress BlvdSiler City, NC 27344 (919) 799‑4000
- 6118 Farrington Rd, Suite AChapel Hill, NC 27517 (984) 974‑9977
Group practices
Medicare enrollment lists Gregory B. Summerville as a member of these groups (CMS data updated October 2, 2026).
- University of North Carolina at Chapel Hill2,052 clinicians in the group
- Carolina Physical Therapy Associates LLC471 clinicians in the group
- Chatham Hospital Inc64 clinicians in the group
Specialties
- Orthopedic Surgeryprimary
Other orthopedic surgeons in Chapel Hill
Clinicians with the same Medicare primary specialty in Chapel Hill, NC — not a recommendation.
Other clinicians in University of North Carolina at Chapel Hill
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wake Forest University School Of Medicine |
| Graduation year | 2013 (13 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1053653337 |
| Corrections | Report an error or suggest an update → |
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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians