Quick answers
- Which hospitals does Gregory W. Horn work at?
- Medicare's official clinician data lists Gregory W. Horn at 2 hospitals: Singing River Gulfport and Singing River Health System. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory W. Horn see patients?
- Medicare's clinician data lists 1 practice location in Ocean Springs, MS. Call before your visit to confirm the address.
- What is Gregory W. Horn's specialty?
- Medicare lists Obstetrics/Gynecology as the primary specialty.
- Does Gregory W. Horn accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory W. Horn 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 Gregory W. Horn?
- (228) 872-1505, as listed in official Medicare / NPI Registry data.
- What is Gregory W. Horn's NPI number?
- 1659371128. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory W. Horn works
Medicare's Facility Affiliation Data lists Gregory W. Horn at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Singing River GulfportGulfport, MS · Acute Care Hospital · CCN 250123
- Singing River Health SystemPascagoula, MS · Acute Care Hospital · CCN 250040
Practice locations
Addresses where Gregory W. Horn is enrolled with Medicare (CMS data updated 2026-10-02).
- 21 Doctors DrOcean Springs, MS 39564 (228) 872‑1505
Group practices
Medicare enrollment lists Gregory W. Horn as a member of this group (CMS data updated 2026-10-02).
- Mississippi Coast Ob/Gyn, P.A.4 clinicians in the group
Specialties
- Obstetrics/Gynecologyprimary
Other OB-GYNs in Ocean Springs
Clinicians with the same Medicare primary specialty in Ocean Springs, MS — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In Shreveport |
| Graduation year | 1993 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659371128 |
| 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