Quick answers
- Does Joel S. Greenberg accept Medicare assignment?
- Yes. Medicare's clinician data says Joel S. Greenberg accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of October 2, 2026. Ask the office to confirm before your visit.
- What is Joel S. Greenberg's NPI number?
- 1194838581. 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 Joel S. Greenberg is enrolled with Medicare (CMS data updated October 2, 2026).
- 1600 W Grand River Ave, Suite 2Okemos, MI 48864 (517) 349‑6560
- 7335 Westshire Dr, Suite 102Lansing, MI 48917 (517) 622‑1012
Group practices
Medicare enrollment lists Joel S. Greenberg as a member of this group (CMS data updated October 2, 2026).
- MSU Health Care Inc.198 clinicians in the group
Specialties
- Pediatric Medicineprimary
Other pediatricians in Michigan
Clinicians with the same Medicare primary specialty in Michigan — not a recommendation.
Other clinicians in MSU Health Care Inc.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Human Medicine |
| Graduation year | 1989 (37 years since medical school) |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194838581 |
| 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 October 2, 2026, retrieved October 29, 2026
- 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