Brianna Williamson, PA-C
Physician Assistant · Oak Ridge, TN
Brianna Williamson, PA-C is a physician assistant with a practice address in Oak Ridge, Tennessee, and NPI 1316554884, issued on Sep 28, 2020. Check the license (Tennessee PA0000004097, as entered in NPPES) with the Tennessee board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Brianna Williamson
- Credential
- PA-C
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PA0000004097 TN
Self-reported in NPPES; status is on the state search - Practice location
- 800 Oak Ridge Tpke Ste A101, Oak Ridge, TN 37830
- Phone
- (865) 483-1093
- Enumerated
- Sep 28, 2020
- Record last updated
- May 6, 2025
- Medicaid ID
- Q062539 TN
- Medicare enrollment
- Enrolled (PECOS I20201208003244); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,055 in Tennessee → Look up another NPI →
Also registered at 800 Oak Ridge Tpke Ste A101
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Brianna Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Tennessee board licenses this profession
Search for license PA0000004097Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average physician assistant in 2024
15 Medicare Part D claims for 11 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $465.42
5 payments; by number, the most common kind was food and beverage; the largest payer was Boston Scientific Corporation. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Tennessee Urology Associates, PLLCOak Ridge, TN
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brianna Williamson among 3,055 physician assistant records in Tennessee
Brianna Williamson, PA-C is one of 3,055 physician assistant records with a practice address in Tennessee. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 55% of them.
- NPI issued2020 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2019 · median 2019 among the 2,030 with a school on file
- Record last updated2025 · 30% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
38 physician assistant records list a practice address in Oak Ridge
They are 38 of the 904 NPPES records with a practice address in Oak Ridge, and 3,055 physician assistant records in Tennessee.
All 3,055 in Tennessee → Every provider in Oak Ridge → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Angela Adkisson, PAOak Ridge, TN 378301598851602
- Davina Blazer, PA-COak Ridge, TN 378301598733958
- Robert Cummings, P.A.-C.Oak Ridge, TN 378301306887971
- David Drum, PA-COak Ridge, TN 378301942286935
- Kimberly Dymond, PACOak Ridge, TN 378301649263419
- Terry Hallwachs, PAOak Ridge, TN 378301962448860
- Joel Hayes, PA-COak Ridge, TN 378301427486018
- Rebecca Layton, PA-COak Ridge, TN 378301386979573
Common questions
What is Brianna Williamson, PA-C's NPI number?
Brianna Williamson, PA-C's National Provider Identifier (NPI) is 1316554884, issued on Sep 28, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Brianna Williamson, PA-C located?
The NPPES record lists a practice address at 800 Oak Ridge Tpke Ste A101, Oak Ridge, TN, 37830. Phone: (865) 483-1093. Providers update this record themselves, so call before visiting.
How can I verify Brianna Williamson, PA-C's license?
NPPES lists Tennessee license number PA0000004097, as entered by the provider. Search the Tennessee board that licenses this profession; the NPPES record confirms identity only.
How much does Brianna Williamson, PA-C prescribe under Medicare Part D?
In 2024, Brianna Williamson, PA-C had 15 Medicare Part D claims for 11 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
What is Brianna Williamson, PA-C's MIPS final score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.