Quick answers
- Does Lou B. Marcum accept Medicare assignment?
- Yes. Medicare's clinician data says Lou B. Marcum 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 Lou B. Marcum see?
- In 2024, CMS data shows 74 Original Medicare patients and 193 services for Lou B. Marcum. This counts Original Medicare only and measures volume, not quality.
- What is Lou B. Marcum's NPI number?
- 1457530289. 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 Lou B. Marcum, 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 | 74 |
|---|---|
| Services billed to Medicare | 193 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 76 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)121 services
- Hospital discharge day management, 30 minutes or less (99238)29 services
- Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes (99222)26 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%
- Arthritis75%
- Heart failure68%
- Ischemic heart disease61%
- Anxiety58%
Practice locations
Addresses where Lou B. Marcum is enrolled with Medicare (CMS data updated October 2, 2026).
- 1762 E Main StSpartanburg, SC 29307 (864) 968‑9144
- 2475 Broad StSumter, SC 29150 (843) 238‑1461
Group practices
Medicare enrollment lists Lou B. Marcum as a member of this group (CMS data updated October 2, 2026).
- Novant Health Urgent Cares LLC177 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Spartanburg
Clinicians with the same Medicare primary specialty in Spartanburg, SC — not a recommendation.
Other clinicians in Novant Health Urgent Cares LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2007 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1457530289 |
| 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