Quick answers
- Does Joel W. Duncan accept Medicare assignment?
- Yes. Medicare's clinician data says Joel W. Duncan 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 Joel W. Duncan see?
- In 2024, CMS data shows 1,008 Original Medicare patients and 6,109 services for Joel W. Duncan. This counts Original Medicare only and measures volume, not quality.
- What is Joel W. Duncan's NPI number?
- 1871542779. 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 Joel W. Duncan, 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 | 1,008 |
|---|---|
| Services billed to Medicare | 6,109 |
| Different services or procedures | 48 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)987 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report (93000)753 services
- 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)719 services
- Ultrasound of heart with color-depicted blood flow, rate, direction and valve function (93306)602 services
- Injection, regadenoson, 0.1 mg (J2785)560 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%
- Arthritis52%
- Ischemic heart disease39%
- Diabetes35%
- Chronic kidney disease28%
Practice locations
Addresses where Joel W. Duncan is enrolled with Medicare (CMS data updated October 2, 2026).
- 1 Wellness Blvd, Suite 109Irmo, SC 29063 (803) 749‑1111
Group practices
Medicare enrollment lists Joel W. Duncan as a member of this group (CMS data updated October 2, 2026).
- South Carolina Internal Medicine Associates and Rehabilitation LLC26 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in South Carolina →
Other cardiologists in South Carolina
Clinicians with the same Medicare primary specialty in South Carolina — not a recommendation.
Other clinicians in South Carolina Internal Medicine Associates and Rehabilitation LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas Tech University Health Science Center School Of Medicine |
| Graduation year | 1988 (38 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1871542779 |
| 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
- 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