Quick answers
- Which hospitals does John P. Greving work at?
- Medicare's official clinician data lists John P. Greving at 2 hospitals: Blessing Hospital and Hannibal Regional Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John P. Greving see patients?
- Medicare's clinician data lists 4 practice locations, including Paris, MO, Shelbina, MO and Hannibal, MO. Call before your visit to confirm the address.
- What is John P. Greving's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does John P. Greving accept Medicare assignment?
- Yes. Medicare's clinician data says John P. Greving 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 P. Greving?
- (660) 327-4911, as listed in official Medicare / NPI Registry data.
- What is John P. Greving's NPI number?
- 1043388036. 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 P. Greving works
Medicare's Facility Affiliation Data lists John P. Greving at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Blessing HospitalQuincy, IL · Acute Care Hospital · CCN 140015
- Hannibal Regional HospitalHannibal, MO · Acute Care Hospital · CCN 260025
Practice locations
Addresses where John P. Greving is enrolled with Medicare (CMS data updated 2026-10-02).
- 102 E Marion StParis, MO 65275 (660) 327‑4911
- 400 S Ctr StShelbina, MO 63468 (573) 588‑4131
- 6000 Hospital DrHannibal, MO 63401
- 6500 Hospital DrHannibal, MO 63401 (573) 248‑1300
Group practices
Medicare enrollment lists John P. Greving as a member of this group (CMS data updated 2026-10-02).
- Hannibal Regional Healthcare System Inc272 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | At Still University Of Health Sciences, College Of Osteo Med, Kirksville |
| Graduation year | 1998 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1043388036 |
| 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