Quick answers
- Does Thomas H. Gann Jr. accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas H. Gann Jr. 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 Thomas H. Gann Jr. see?
- In 2024, CMS data shows 261 Original Medicare patients and 350 services for Thomas H. Gann Jr.. This counts Original Medicare only and measures volume, not quality.
- What is Thomas H. Gann Jr.'s NPI number?
- 1538377205. 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 Thomas H. Gann Jr., 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 | 261 |
|---|---|
| Services billed to Medicare | 350 |
| Different services or procedures | 17 |
| Participating Medicare provider | Yes |
| Average age of these patients | 71 |
Most frequent services
- Measurement of brain wave activity (eeg), awake and drowsy (95816)114 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)62 services
- Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more (99215)57 services
- Measurement of brain wave activity with video (veeg), 12-26 hours with review and report by health care professional (95720)29 services
- New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more (99204)21 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 blood pressure75%
- High cholesterol75%
- Arthritis47%
- Stroke or mini-stroke46%
- Depression41%
- Chronic kidney disease41%
Hospitals where Thomas H. Gann Jr. works
Medicare's Facility Affiliation Data lists Thomas H. Gann Jr. 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.
- Prisma Health Greenville Memorial HospitalGreenville, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: not listed by Medicare · CCN 420078
- Prisma Health Greer Memorial HospitalGreer, SC · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 420033
- Prisma Health Hillcrest HospitalSimpsonville, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420037
- Prisma Health Laurens County HospitalClinton, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420038
- Prisma Health Oconee Memorial HospitalSeneca, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420009
Practice locations
Addresses where Thomas H. Gann Jr. is enrolled with Medicare (CMS data updated October 2, 2026).
- 200 Patewood Dr, Suite B350Greenville, SC 29615 (864) 454‑4500
Group practices
Medicare enrollment lists Thomas H. Gann Jr. as a member of this group (CMS data updated October 2, 2026).
- Prisma Health University Medical Group2,493 clinicians in the group
Specialties
- Neurologyprimary
Other neurologists in Greenville
Clinicians with the same Medicare primary specialty in Greenville, SC — not a recommendation.
Other clinicians in Prisma Health University Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2004 (22 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1538377205 |
| 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