Quick answers
- Where does Sharon Greiner see patients?
- Medicare's clinician data lists 4 practice locations, including Hammond, IN, Merrillville, IN and Portage, IN. Call before your visit to confirm the address.
- What is Sharon Greiner's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Sharon Greiner accept Medicare assignment?
- Yes. Medicare's clinician data says Sharon Greiner 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 Sharon Greiner?
- (219) 802-8800, as listed in official Medicare / NPI Registry data.
- What is Sharon Greiner's NPI number?
- 1477218444. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Sharon Greiner is enrolled with Medicare (CMS data updated 2026-10-02).
- 31 E Sibley St, Suite AHammond, IN 46320 (219) 802‑8800
- 5043 E 81st AveMerrillville, IN 46410 (219) 554‑3290
- 6050 Sterling Creek RdPortage, IN 46368
- 6091 BroadwayMerrillville, IN 46410 (219) 763‑8112
Group practices
Medicare enrollment lists Sharon Greiner as a member of these groups (CMS data updated 2026-10-02).
- Midwest Express Care 4 LLC63 clinicians in the group
- Northshore Health Centers Inc33 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Hammond
Clinicians with the same Medicare primary specialty in Hammond, IN — not a recommendation.
Clinician information
| Graduation year | 2021 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1477218444 |
| 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
- 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