Quick answers
- Which hospitals does Dennis M. Sullivan work at?
- Medicare's official clinician data lists Dennis M. Sullivan at 4 hospitals: East Carroll Parish Hospital, Natchitoches Regional Medical Center, Richardson Medical Center and Union General Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Dennis M. Sullivan see patients?
- Medicare's clinician data lists 2 practice locations, including Rayville, LA and Lake Providence, LA. Call before your visit to confirm the address.
- What is Dennis M. Sullivan's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Dennis M. Sullivan accept Medicare assignment?
- Medicare's clinician data says Dennis M. Sullivan may accept Medicare assignment (as of 2026-10-02). Ask the office whether they accept it for your visit.
- What is the phone number for Dennis M. Sullivan?
- (318) 728-4181, as listed in official Medicare / NPI Registry data.
- What is Dennis M. Sullivan's NPI number?
- 1861421265. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Dennis M. Sullivan works
Medicare's Facility Affiliation Data lists Dennis M. Sullivan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- East Carroll Parish HospitalLake Providence, LA · Acute Care Hospital · CCN 190208
- Natchitoches Regional Medical CenterNatchitoches, LA · Acute Care Hospital · CCN 190007
- Richardson Medical CenterRayville, LA · Acute Care Hospital · CCN 190151
- Union General HospitalFarmerville, LA · Critical Access Hospital · CCN 191301
Practice locations
Addresses where Dennis M. Sullivan is enrolled with Medicare (CMS data updated 2026-10-02).
- 254 Hwy 3048Rayville, LA 71269 (318) 728‑4181
- 336 N Hood StLake Providence, LA 71254 (318) 559‑4023
Group practices
Medicare enrollment lists Dennis M. Sullivan as a member of these groups (CMS data updated 2026-10-02).
- Richland Parish Hospital Service District No 1-B40 clinicians in the group
- East Carroll Parish Hospital38 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Rayville
Clinicians with the same Medicare primary specialty in Rayville, LA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In New Orleans |
| Graduation year | 1983 |
| Gender (as listed) | Male |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1861421265 |
| 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