Quick answers
- Does Christie R. Williamson accept Medicare assignment?
- Yes. Medicare's clinician data says Christie R. 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 Christie R. Williamson see?
- In 2024, CMS data shows 121 Original Medicare patients and 761 services for Christie R. Williamson. This counts Original Medicare only and measures volume, not quality.
- What is Christie R. Williamson's NPI number?
- 1912926544. 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 Christie R. 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 | 121 |
|---|---|
| Services billed to Medicare | 761 |
| Different services or procedures | 12 |
| Participating Medicare provider | Yes |
| Average age of these patients | 53 |
Most frequent services
- Injection of drug or substance under skin or into muscle (96372)259 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)91 services
- Office or other outpatient visit for the evaluation and management of established patient that may not require presence of healthcare professional (99211)43 services
- Psychotherapy, 30 minutes (90832)24 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 cholesterol55%
- High blood pressure50%
- Depression31%
- Anxiety30%
- Diabetes25%
- Arthritis14%
Practice locations
Addresses where Christie R. Williamson is enrolled with Medicare (CMS data updated October 2, 2026).
- 448 Lakeshore Pkwy, Suite 110Rock Hill, SC 29730 (803) 329‑3177
- 524 Doctors CtChester, SC 29706 (803) 581‑8311
Group practices
Medicare enrollment lists Christie R. Williamson 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 Rock Hill
Clinicians with the same Medicare primary specialty in Rock Hill, 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 | 1994 (32 years since medical school) |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1912926544 |
| 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