Quick answers
- Does John H. Cathcart Iii accept Medicare assignment?
- Yes. Medicare's clinician data says John H. Cathcart Iii 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 John H. Cathcart Iii see?
- In 2024, CMS data shows 504 Original Medicare patients and 2,833 services for John H. Cathcart Iii. This counts Original Medicare only and measures volume, not quality.
- What is John H. Cathcart Iii's NPI number?
- 1649375684. 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 John H. Cathcart Iii, 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 | 504 |
|---|---|
| Services billed to Medicare | 2,833 |
| Different services or procedures | 80 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
Most frequent services
- Injection, betamethasone acetate 3 mg and betamethasone sodium phosphate 3 mg (J0702)761 services
- X-ray of shoulder, minimum of 2 views (73030)352 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)253 services
- Aspiration and/or injection of fluid from large joint (20610)192 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)189 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%
- Arthritis67%
- Diabetes34%
- Anxiety31%
- Ischemic heart disease24%
Hospitals where John H. Cathcart Iii works
Medicare's Facility Affiliation Data lists John H. Cathcart Iii 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.
- Abbeville Area Medical CenterAbbeville, SC · Critical Access Hospital · Emergency services: listed by Medicare · CCN 421301
- Self Regional HealthcareGreenwood, SC · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 420071
Practice locations
Addresses where John H. Cathcart Iii is enrolled with Medicare (CMS data updated October 2, 2026).
- 102 Gregor Mendel CirGreenwood, SC 29646 (864) 229‑2663
- 22580 Hwy 76 E, Suite 100Laurens, SC 29360 (864) 833‑5986
- 901 W Greenwood St, Suite 1Abbeville, SC 29620 (864) 366‑9681
Group practices
Medicare enrollment lists John H. Cathcart Iii as a member of these groups (CMS data updated October 2, 2026).
- Self Medical Group395 clinicians in the group
- Self Regional Healthcare180 clinicians in the group
- Abbeville County Memorial Hospital45 clinicians in the group
Specialties
- Sports Medicineprimary
- Orthopedic Surgeryalso
Other sports medicine doctors in South Carolina
Clinicians with the same Medicare primary specialty in South Carolina — not a recommendation.
Other clinicians in Self Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Medical University Of South Carolina College Of Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649375684 |
| 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