AUSTIN TREVOR WILLIAMS MD
NPI 1265994222
Family Medicine in Marksville, LA
About Austin Trevor Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
AUSTIN TREVOR WILLIAMS MD (NPI 1265994222) is an individual family medicine provider in Marksville, Louisiana, licensed in Louisiana (328634) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS, is affiliated with Christus St Frances Cabrini Hospital, and maintains a secondary practice location in Shreveport.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Austin Trevor Williams Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
3Medicare enrollment records show Austin Williams reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marksville, LA 71351
- Reassigned Medicare billing, Louisiana enrollment
- 85 clinicians in this Medicare group
Marksville, LA 71351
- Reassigned Medicare billing, Louisiana enrollment
- 26 clinicians in this Medicare group
Marksville, LA 71351
- Reassigned Medicare billing, Louisiana enrollment
- 66 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 3
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Christus St Frances Cabrini Hospital
Acute Care Hospitals · Alexandria, LAAvoyelles Hospital
Acute Care Hospitals · Marksville, LAWillis Knighton Medical Center
Acute Care Hospitals · Shreveport, LAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 71351 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 7
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARKSVILLE, LA 71351
MARKSVILLE, LA 71351
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Austin Williams's NPI number?
The NPI number for Austin Williams is 1265994222. It was assigned to this individual provider in the NPPES registry on April 1, 2019.
Where is Austin Williams located?
Austin Williams practices at 597 Tunica Dr W, Marksville, LA 71351. The listed phone number is (318) 253-0677.
What is Austin Williams's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Austin Williams enrolled in Medicare?
Yes. Austin Williams is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Austin Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Austin Williams reassigns Medicare benefits to 3 organizations: Clhg-Avoyelles LLC (Marksville, LA), Derussy Emergency Group, LLC (Marksville, LA) and Hawkeye Medical, LLC (Marksville, LA). Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Austin Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Austin Williams accept?
Health plans from Ambetter Health, Ambetter from Arkansas Health & Wellness, Ambetter from Louisiana Healthcare Connections, Ambetter from Superior HealthPlan and Blue Cross and Blue Shield of Louisiana and 2 other insurers list Austin Williams as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Austin Williams affiliated with any hospitals?
According to CMS data, Austin Williams is affiliated with Christus St Frances Cabrini Hospital, Avoyelles Hospital and Willis Knighton Medical Center.
When was this NPI record last updated?
The NPPES record for Austin Williams was last updated on November 17, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Austin Trevor Williams, MD · NPI 1265994222
Family Medicine physician in Marksville, Louisiana. Individual provider, active in the CMS NPPES registry since April 1, 2019.
## Identity
- **NPI:** 1265994222 (Entity type: Individual)
- **Enumerated:** April 1, 2019
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 328634 (Louisiana)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 597 TUNICA DR W, Marksville, LA 71351-2628
- **Phone:** (318) 253-0677 · **Fax:** (318) 253-0679
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Clhg-Avoyelles LLC (NPI 1447841945, Marksville, LA); Derussy Emergency Group, LLC (NPI 1306300900, Marksville, LA); Hawkeye Medical, LLC (NPI 1952630360, Marksville, LA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Louisiana State University School Of Medicine In Shreveport, class of 2019
## Record status
- **NPPES last updated:** November 17, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1265994222) · Data from the CMS NPPES public registry.