Quick answers
- Does Allison W. Williams accept Medicare assignment?
- Yes. Medicare's clinician data says Allison W. Williams 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 Allison W. Williams see?
- In 2024, CMS data shows 20 Original Medicare patients and 20 services for Allison W. Williams. This counts Original Medicare only and measures volume, not quality.
- What is Allison W. Williams's NPI number?
- 1568767465. 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 Allison W. Williams, 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 | 20 |
|---|---|
| Services billed to Medicare | 20 |
| Different services or procedures | 7 |
| Participating Medicare provider | Yes |
| Average age of these patients | 75 |
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 cholesterol75%
- High blood pressure70%
- Arthritis55%
Practice locations
Addresses where Allison W. Williams is enrolled with Medicare (CMS data updated October 2, 2026).
- 104 Saluda Pointe Dr, Suite 200Lexington, SC 29072 (803) 939‑5050
- 7 Independence Pt, Suite 300Greenville, SC 29615 (864) 522‑3700
Group practices
Medicare enrollment lists Allison W. Williams as a member of these groups (CMS data updated October 2, 2026).
- Prisma Health University Medical Group2,493 clinicians in the group
- Medstream Anesthesia PLLC573 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), South Carolina →
Other nurse anesthetists in South Carolina
Clinicians with the same Medicare primary specialty in South Carolina — 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 | CNA |
|---|---|
| School | University Of South Carolina School Of Medicine |
| Graduation year | 2011 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1568767465 |
| 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