John Brett Williamson, PA
- Part D claims, 2024
- 1,893
- Industry payments
- $142
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice address
- 550 Connells Parkway Lane, Baton Rouge, LA 70806
- Practice phone
- Call (225) 923-8250
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Outpatient Surgery Center for Sight (Connells Pkwy Ln)
Surgery Center - Not Medicare-Certified · Baton Rouge, Louisiana
Find John Williamson's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
John Brett Williamson is a physician assistant in Baton Rouge, Louisiana
John Williamson practices at Outpatient Surgery Center for Sight (Connells Pkwy Ln) in Baton Rouge, Louisiana.
John Williamson's NPI, 1366448623, was assigned on June 22, 2005. John Williamson holds Louisiana license PAA10380RX.
- NPI
- 1366448623NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4688629058
- NPI enumeration date
- June 22, 2005
- NPI status
- Active
- Practice phone
- (225) 923-8250
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
John Brett Williamson practices at Outpatient Surgery Center for Sight (Connells Pkwy Ln) in Baton Rouge, Louisiana
John Williamson's primary practice is Outpatient Surgery Center for Sight (Connells Pkwy Ln), at 550 Connells Parkway Lane, Baton Rouge, LA 70806. The practice phone is (225) 923-8250.
- Outpatient Surgery Center for Sight (Connells Pkwy Ln)550 Connells Parkway Lane, Baton Rouge, LA 70806Phone(225) 923-8250
Source: Dmand AI Affiliation Data
John Brett Williamson is affiliated with 1 site of care
John Williamson's primary practice is Outpatient Surgery Center for Sight (Connells Pkwy Ln) in Baton Rouge, Louisiana. John Williamson's employer is on file too: a surgery center (asc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at John Brett Williamson's practice
Dmand AI tracks the electronic health record (EHR) system at each site where John Williamson practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Outpatient Surgery Center for Sight (Connells Pkwy Ln) | Available with a free account |
Source: Dmand AI Technology Install Data
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John Brett Williamson is one of 1,286 physician assistants in Louisiana
Physician assistant is John Williamson's primary specialty in the NPI Registry, under taxonomy code 363A00000X. John Williamson is licensed in Louisiana.
Specialties and state licenses
- Physician assistant, LouisianaPrimary
Physician assistants near John Williamson
Counts of physician assistants with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
John Brett Williamson's patients have a median age of 58
Across all payers, Dmand AI patient panel data puts John Williamson's median patient age at 58, with 69% women.
John Williamson's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women69%
- Men31%
Source: Dmand AI Patient Panel Data
John Brett Williamson wrote 1,893 Medicare Part D claims in 2024
In 2024, John Williamson wrote 1,893 Medicare Part D claims for 452 patients. 53% of them were for generic drugs.
John Williamson's Part D claims by kind of drug, 2024
- Generic1,004 claims53%
- Brand-name889 claims47%
Drug classes CMS tracks in John Williamson's Part D claims, 2024
- Antibiotics1%13 of 1,893 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
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John Brett Williamson received $142 in industry payments in 2025
CMS Open Payments shows 2 general payments to John Williamson from 2 drug and device companies in 2025. Food and beverage make up the largest share, 100% of the total. Harrow Eye, LLC paid the most, $124.
Companies that paid John Williamson the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for John Brett Williamson's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about John Brett Williamson
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is John Brett Williamson's NPI number?
John Brett Williamson's NPI number is 1366448623. It was assigned on June 22, 2005, and it is active in the NPI Registry.
What does John Brett Williamson specialize in?
John Brett Williamson is a physician assistant in Baton Rouge, Louisiana. The primary specialty in the NPI Registry is Physician Assistant (taxonomy code 363A00000X).
Where does John Brett Williamson practice?
John Williamson practices at 550 Connells Parkway Lane, Baton Rouge, LA 70806. John Williamson's primary practice is Outpatient Surgery Center for Sight (Connells Pkwy Ln) in Baton Rouge, Louisiana.
What is John Brett Williamson's office phone number?
The practice phone on file for John Williamson is (225) 923-8250.
What is John Brett Williamson's medical license number?
John Williamson holds Louisiana license PAA10380RX.
Has John Brett Williamson received payments from drug or device companies?
CMS Open Payments shows $142 in general payments to John Williamson from 2 companies from 2025 to 2025. The largest total came from Harrow Eye, LLC.
How long has John Brett Williamson been practicing?
John Williamson's NPI was assigned in 2005.
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