Quick answers
- Which hospitals does Gregory A. St John work at?
- Medicare's official clinician data lists Gregory A. St John at 4 hospitals: Baptist Health Medical Center-Hot Springs County, CHI St. Vincent Hospital Hot Springs, Mena Regional Health System and National Park Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory A. St John see patients?
- Medicare's clinician data lists 1 practice location in Hot Springs, AR. Call before your visit to confirm the address.
- What is Gregory A. St John's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Gregory A. St John accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory A. St John 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 A. St John?
- (501) 625-3400, as listed in official Medicare / NPI Registry data.
- What is Gregory A. St John's NPI number?
- 1124023056. 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 A. St John works
Medicare's Facility Affiliation Data lists Gregory A. St John at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Baptist Health Medical Center-Hot Springs CountyMalvern, AR · Acute Care Hospital · CCN 040076
- CHI St. Vincent Hospital Hot SpringsHot Springs, AR · Acute Care Hospital · CCN 040026
- Mena Regional Health SystemMena, AR · Critical Access Hospital · CCN 041334
- National Park Medical CenterHot Springs, AR · Acute Care Hospital · CCN 040078
Practice locations
Addresses where Gregory A. St John is enrolled with Medicare (CMS data updated 2026-10-02).
- 130 Medical Park PlHot Springs, AR 71901 (501) 625‑3400
Group practices
Medicare enrollment lists Gregory A. St John as a member of this group (CMS data updated 2026-10-02).
- National Park Cardiology Services LLC7 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Arkansas →
Other cardiologists in Hot Springs
Clinicians with the same Medicare primary specialty in Hot Springs, AR — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Arkansas College Of Medicine |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1124023056 |
| 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