Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mr. John Brett Williamson, PA

Individual provider Physician Assistant · NPI 1366448623

Mr. John Brett Williamson, PA is a Physician Assistant in Baton Rouge, Louisiana. Qualified in 1998, 28 years ago. Licensed in Louisiana.

Years since qualifying
28
Licensed in
LA
In the registry since
2005
What do these letters mean?
PA — Physician Assistant
A licensed clinician who examines, diagnoses and treats under a physician's supervision.

See every abbreviation used in this directory →

Practice location Address checks out

550 Connells Park Ln
Baton Rouge, LA 70806-6539
Phone: (225) 924-2020
Fax: (225) 925-0225
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physician Assistant (primary) Taxonomy 363A00000X · Licence PAA10380RX (LA)

Record details

NPI number1366448623
Entity typeIndividual (Type 1)
GenderMale
Credentials PA
Sole proprietorNo
NPI enumeratedJune 22, 2005
Last updated in NPPESAugust 26, 2008

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICIAN ASSISTANT
Medical schoolOTHER
Graduated 1998 (28 years in practice)
Accepts Medicare assignment Not indicated

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