Quick answers
- Does Ervin D. Prewette Ii accept Medicare assignment?
- Yes. Medicare's clinician data says Ervin D. Prewette Ii 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 Ervin D. Prewette Ii see?
- In 2024, CMS data shows 16 Original Medicare patients and 16 services for Ervin D. Prewette Ii. This counts Original Medicare only and measures volume, not quality.
- What is Ervin D. Prewette Ii's NPI number?
- 1851303200. 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 Ervin D. Prewette Ii, 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 | 16 |
|---|---|
| Services billed to Medicare | 16 |
| Different services or procedures | 4 |
| Participating Medicare provider | Yes |
| Average age of these patients | 67 |
Most frequent services
- Psychiatric diagnostic evaluation with medical services (90792)12 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%
- Depression75%
- Anxiety75%
Practice locations
Addresses where Ervin D. Prewette Ii is enrolled with Medicare (CMS data updated October 2, 2026).
- 124 Mallard StGreenville, SC 29601 (864) 241‑1040
- 400 Otarre PkwyCayce, SC 29033 (803) 898‑4566
Group practices
Medicare enrollment lists Ervin D. Prewette Ii as a member of this group (CMS data updated October 2, 2026).
- South Carolina Dept of Mental Health Accounting Office221 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Greenville
Clinicians with the same Medicare primary specialty in Greenville, SC — not a recommendation.
Other clinicians in South Carolina Dept of Mental Health Accounting Office
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of South Carolina School Of Medicine |
| Graduation year | 2001 (25 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851303200 |
| 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