Quick answers
- Does Charlotte W. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Charlotte W. Williamson 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 Charlotte W. Williamson see?
- In 2024, CMS data shows 305 Original Medicare patients and 1,473 services for Charlotte W. Williamson. This counts Original Medicare only and measures volume, not quality.
- What is Charlotte W. Williamson's NPI number?
- 1376251090. 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 Charlotte W. Williamson, 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 | 305 |
|---|---|
| Services billed to Medicare | 1,473 |
| Different services or procedures | 46 |
| Participating Medicare provider | Yes |
| Average age of these patients | 72 |
Most frequent services
- Destruction of precancer skin growth, 2-14 growths (17003)614 services
- Destruction of precancer skin growth, 1 growth (17000)141 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)128 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)124 services
- New patient office or other outpatient visit with low level of medical decision making, if using time, 30 minutes or more (99203)79 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 cholesterol75%
- High blood pressure66%
- Arthritis42%
- Ischemic heart disease27%
- Diabetes24%
- Depression24%
Practice locations
Addresses where Charlotte W. Williamson is enrolled with Medicare (CMS data updated October 2, 2026).
- 1807 W Slaughter Ln, 490 Arc SouthwestAustin, TX 78748 (512) 282‑8967
- 6835 Austin Ctr BlvdAustin, TX 78731 (512) 346‑6611
- 708 W Ben White BlvdAustin, TX 78704
- 8901 Vertex Blvd, Suite 100Austin, TX 78747 (512) 231‑5150
Group practices
Medicare enrollment lists Charlotte W. Williamson as a member of this group (CMS data updated October 2, 2026).
- Austin Regional Clinic PA397 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Austin
Clinicians with the same Medicare primary specialty in Austin, TX — not a recommendation.
Other clinicians in Austin Regional Clinic PA
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2022 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376251090 |
| 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