Brianna Williamson, PA-C
NPI 1316554884 · Physician Assistant · Oak Ridge, TN
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Brianna Williamson, PA-C is a Physician Assistant provider in Oak Ridge, TN (NPI 1316554884).
Provider details
- NPI number
- 1316554884
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- PA0000004097 (TN)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
5 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
286 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 90 | $63 |
| Surgical Removal of Prostate and Surrounding Lymph Nodes Using an Endoscope55866 | 66 | $150 |
| Removal of Lymph Nodes of Both Sides of Pelvis Using an Endoscope38571 | 59 | $44 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 52 | $139 |
| Simple Surgical Subtotal Removal of Prostate Using Laparoscope55867 | 19 | $133 |
Typical Medicare-allowed amounts for these services range $44–$150 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$465 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-09-28
- Last updated
- 2025-05-06
- Certified
- 2025-05-06
Frequently asked questions
- What is Brianna Williamson's NPI number?
- Brianna Williamson's National Provider Identifier (NPI) is 1316554884, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Brianna Williamson's specialty?
- Brianna Williamson is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Brianna Williamson located?
- Brianna Williamson's practice location on file with NPPES is 800 Oak Ridge Tpke Ste A101, Oak Ridge, TN 37830-6927.
- What is Brianna Williamson's phone number?
- The practice phone number listed in the NPPES registry for Brianna Williamson is (865) 483-1093.
- Does Brianna Williamson accept Medicare?
- Brianna Williamson is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Brianna Williamson's NPI active?
- Yes — Brianna Williamson's NPI (1316554884) is active in the NPPES registry as of the last update on 2025-05-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.