Quick answers
- Which hospitals does Michael E. Portner work at?
- Medicare's official clinician data lists Michael E. Portner at 2 hospitals: Bolivar Medical Center and Greenwood Leflore Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael E. Portner see patients?
- Medicare's clinician data lists 3 practice locations, including Indianola, MS, Greenwood, MS and Cleveland, MS. Call before your visit to confirm the address.
- What is Michael E. Portner's specialty?
- Medicare lists Nephrology as the primary specialty.
- Does Michael E. Portner accept Medicare assignment?
- Yes. Medicare's clinician data says Michael E. Portner 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 Michael E. Portner?
- (662) 887-5155, as listed in official Medicare / NPI Registry data.
- What is Michael E. Portner's NPI number?
- 1659439867. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael E. Portner works
Medicare's Facility Affiliation Data lists Michael E. Portner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Bolivar Medical CenterCleveland, MS · Acute Care Hospital · CCN 250093
- Greenwood Leflore HospitalGreenwood, MS · Acute Care Hospital · CCN 250099
Practice locations
Addresses where Michael E. Portner is enrolled with Medicare (CMS data updated 2026-10-02).
- 110 E Baker StIndianola, MS 38751 (662) 887‑5155
- 609 Tallahatchie StGreenwood, MS 38930 (601) 453‑5208
- 803 1st StCleveland, MS 38732 (662) 843‑2721
Group practices
Medicare enrollment lists Michael E. Portner as a member of these groups (CMS data updated 2026-10-02).
- Delta Hills Nephrology Clinics PLLC4 clinicians in the group
- Delta Hills Nephrology Associates3 clinicians in the group
Specialties
- Nephrologyprimary
Other nephrologists in Mississippi
Clinicians with the same Medicare primary specialty in Mississippi — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Mississippi School Of Medicine |
| Graduation year | 1980 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659439867 |
| 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