John Brett Williamson, PA
Physician Assistant · Baton Rouge, LA
John Brett Williamson, PA is a physician assistant with a practice address in Baton Rouge, Louisiana, and NPI 1366448623, issued on Jun 22, 2005. Check the license (Louisiana PAA10380RX, as entered in NPPES) with the Louisiana board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- John Brett Williamson
- Credential
- PA
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- PAA10380RX LA
Self-reported in NPPES; status is on the state search - Practice location
- 550 Connells Park LN, Baton Rouge, LA 70806
- Phone
- (225) 924-2020
- Enumerated
- Jun 22, 2005
- Record last updated
- Aug 26, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (225) 925-0225
- Medicare enrollment
- Enrolled (PECOS I20050318000066); may accept Medicare assignment
- Entity
- Type 1 · individual
Also registered at 550 Connells Park LN
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Claire Borne, MDOphthalmology Physician1942205786
- Christine Norred, O.D.Optometrist1013949833
- Kristi Robert, PA-CMedical Physician Assistant1164707709
- Charles Williamson, MDOphthalmology Physician1396740122
- William Williamson, MDOphthalmology Physician1114924560
Verify John Brett Williamson in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Louisiana board licenses this profession
Search for license PAA10380RXCheck the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.3 times the Medicare Part D claims of the average physician assistant in 2024
1,893 Medicare Part D claims for 452 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims.
Most prescribed
- Latanoprost752 claims
- Combigan158 claims
- Azelastine Hcl147 claims
- Lumigan125 claims
- Dorzolamide-Timolol113 claims
- Brimonidine Tartrate-Timolol70 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.
Industry payments in 2024: $328.94
5 payments; by number, the most common kind was food and beverage; the largest payer was Johnson & Johnson Surgical Vision, Inc. 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.
327 physician assistant records list a practice address in Baton Rouge
They are 327 of the 12,526 NPPES records with a practice address in Baton Rouge, and 1,556 physician assistant records in Louisiana.
All 327 in Baton Rouge → All 1,556 in Louisiana → Every provider in Baton Rouge →
Other physician assistant records in Louisiana
- Emery Aaron, PA-CRuston, LA1942907852
- Joseph Abel, PACovington, LA1588233019
- Natalie Abshier, PABaton Rouge, LA1144614017
- Sarah Abukhader, PA-CGretna, LA1962192245
- Noell Ackel, PABaton Rouge, LA1114479680
- Karen Adair, PA-CBaton Rouge, LA1609283407
- Kayla Adams, PA-CCovington, LA1508753377
- Marissa AdamsShreveport, LA1972900033
- Jacquelyn Adcock, P.A.Bossier City, LA1972803088
- Kyle Alain, PABaton Rouge, LA1588536148
Common questions
What is John Brett Williamson, PA's NPI number?
John Brett Williamson, PA's National Provider Identifier (NPI) is 1366448623, issued on Jun 22, 2005. An NPI identifies a provider in billing; it is not a license.
Where is John Brett Williamson, PA located?
The NPPES record lists a practice address at 550 Connells Park LN, Baton Rouge, LA, 70806. Phone: (225) 924-2020. Providers update this record themselves, so call before visiting.
How can I verify John Brett Williamson, PA's license?
NPPES lists Louisiana license number PAA10380RX, as entered by the provider. Search the Louisiana board that licenses this profession; the NPPES record confirms identity only.
How much does John Brett Williamson, PA prescribe under Medicare Part D?
In 2024, John Brett Williamson, PA had 1,893 Medicare Part D claims for 452 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
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.