Quick answers
- Where does William T. Massengale see patients?
- Medicare's clinician data lists 4 practice locations, including Baton Rouge, LA, Prairieville, LA and Lafayette, LA. Call before your visit to confirm the address.
- What is William T. Massengale's specialty?
- Medicare lists Dermatology as the primary specialty.
- Does William T. Massengale accept Medicare assignment?
- Yes. Medicare's clinician data says William T. Massengale accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- What is the phone number for William T. Massengale?
- (225) 987-9000, as listed in official Medicare / NPI Registry data.
- What is William T. Massengale's NPI number?
- 1952398893. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where William T. Massengale is enrolled with Medicare (CMS data updated 2026-10-02).
- 1401 N Foster DrBaton Rouge, LA 70806 (225) 987‑9000
- 14151 Hwy 73Prairieville, LA 70769 (225) 313‑4560
- 17503 Old Jefferson HwyPrairieville, LA 70769 (225) 313‑4560
- 2390 W Congress StLafayette, LA 70506 (337) 261‑6000
Group practices
Medicare enrollment lists William T. Massengale as a member of these groups (CMS data updated 2026-10-02).
- Lsuhn Billing LLC206 clinicians in the group
- W Trent Massengale MD LLC4 clinicians in the group
Specialties
- Dermatologyprimary
Other dermatologists in Baton Rouge
Clinicians with the same Medicare primary specialty in Baton Rouge, LA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 1996 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952398893 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians