Quick answers
- Which hospitals does Gregory Henkelmann work at?
- Medicare's official clinician data lists Gregory Henkelmann at 1 hospital: St Tammany Parish Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Henkelmann see patients?
- Medicare's clinician data lists 7 practice locations, including Gonzales, LA, Covington, LA and Natchez, MS. Call before your visit to confirm the address.
- What is Gregory Henkelmann's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Gregory Henkelmann accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Henkelmann 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 Henkelmann?
- (225) 215-1321, as listed in official Medicare / NPI Registry data.
- What is Gregory Henkelmann's NPI number?
- 1639264237. 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 Henkelmann works
Medicare's Facility Affiliation Data lists Gregory Henkelmann at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- St Tammany Parish HospitalCovington, LA · Acute Care Hospital · CCN 190045
Practice locations
Addresses where Gregory Henkelmann is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 7; the Medicare profile lists all.
- 1104 W Hwy 30Gonzales, LA 70737 (225) 215‑1321
- 1203 S Tyler St, Suite 100Covington, LA 70433 (985) 875‑2234
- 133 Jefferson Davis BlvdNatchez, MS 39120 (601) 442‑1285
- 15728 Paul Vega MD DrHammond, LA 70403 (985) 542‑5000
- 4950 Essen LnBaton Rouge, LA 70809 (225) 767‑0847
Group practices
Medicare enrollment lists Gregory Henkelmann as a member of these groups (CMS data updated 2026-10-02).
- Mary Bird Perkins Cancer Center100 clinicians in the group
- St. Elizabeth-Mary Bird Perkins Cancer Center, L.L.C.15 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Gonzales
Clinicians with the same Medicare primary specialty in Gonzales, LA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Loma Linda University School Of Medicine |
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1639264237 |
| 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