Quick answers
- Which hospitals does John M. Jennings work at?
- Medicare's official clinician data lists John M. Jennings at 5 hospitals: Athens Limestone Hospital, Decatur Morgan Hospital - Decatur Campus, Huntsville Hospital, Lincoln Medical Center and Marshall Medical Centers. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John M. Jennings see patients?
- Medicare's clinician data lists 5 practice locations, including Athens, AL, Huntsville, AL and Madison, AL. Call before your visit to confirm the address.
- What is John M. Jennings's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty, and also Cardiac Electrophysiology and Internal Medicine.
- Does John M. Jennings accept Medicare assignment?
- Yes. Medicare's clinician data says John M. Jennings 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 John M. Jennings?
- (256) 233-9273, as listed in official Medicare / NPI Registry data.
- What is John M. Jennings's NPI number?
- 1386856243. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John M. Jennings works
Medicare's Facility Affiliation Data lists John M. Jennings at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Athens Limestone HospitalAthens, AL · Acute Care Hospital · CCN 010079
- Decatur Morgan Hospital - Decatur CampusDecatur, AL · Acute Care Hospital · CCN 010085
- Huntsville HospitalHuntsville, AL · Acute Care Hospital · CCN 010039
- Lincoln Medical CenterFayetteville, TN · Acute Care Hospital · CCN 440102
- Marshall Medical CentersBoaz, AL · Acute Care Hospital · CCN 010005
Practice locations
Addresses where John M. Jennings is enrolled with Medicare (CMS data updated 2026-10-02).
- 101 Fitness Way, Suite 2700Athens, AL 35611 (256) 233‑9273
- 101 Sivley Rd SWHuntsville, AL 35801 (256) 265‑2372
- 1041 Balch Rd, Suite 300Madison, AL 35758 (256) 817‑5955
- 1100 S Jackson Hwy, Suite 104Sheffield, AL 35660 (256) 381‑8811
- 930 Franklin St SEHuntsville, AL 35801 (256) 539‑4080
Group practices
Medicare enrollment lists John M. Jennings as a member of this group (CMS data updated 2026-10-02).
- HH Heart Center, LLC93 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Alabama →
Other cardiologists in Alabama
Clinicians with the same Medicare primary specialty in Alabama — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1386856243 |
| 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