Quick answers
- Which hospitals does Mark P. Posner work at?
- Medicare's official clinician data lists Mark P. Posner at 3 hospitals: Baton Rouge General Medical Center, Our Lady of the Lake Regional Medical Center and Womans Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Mark P. Posner see patients?
- Medicare's clinician data lists 3 practice locations, including Baton Rouge, LA. Call before your visit to confirm the address.
- What is Mark P. Posner's specialty?
- Medicare lists Urology as the primary specialty.
- Does Mark P. Posner accept Medicare assignment?
- Yes. Medicare's clinician data says Mark P. Posner 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 Mark P. Posner?
- (225) 769-2500, as listed in official Medicare / NPI Registry data.
- What is Mark P. Posner's NPI number?
- 1255391660. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Mark P. Posner works
Medicare's Facility Affiliation Data lists Mark P. Posner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baton Rouge General Medical CenterBaton Rouge, LA · Acute Care Hospital · CCN 190065
- Our Lady of the Lake Regional Medical CenterBaton Rouge, LA · Acute Care Hospital · CCN 190064
- Womans HospitalBaton Rouge, LA · Acute Care Hospital · CCN 190128
Practice locations
Addresses where Mark P. Posner is enrolled with Medicare (CMS data updated 2026-10-02).
- 5000 Hennessy BlvdBaton Rouge, LA 70808
- 7777 Hennessy BlvdBaton Rouge, LA 70808
- 7777 Hennessy Blvd, Suite 2004Baton Rouge, LA 70808 (225) 769‑2500
Group practices
Medicare enrollment lists Mark P. Posner as a member of these groups (CMS data updated 2026-10-02).
- Our Lady of the Lake Physician Group LLC644 clinicians in the group
- Baton Rouge Urology Group Apmc8 clinicians in the group
Specialties
- Urologyprimary
Other urologists 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 Shreveport |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255391660 |
| 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
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- 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