Quick answers
- Does Mary C. Rock accept Medicare assignment?
- Medicare's clinician data says Mary C. Rock may accept Medicare assignment (as of October 2, 2026). Ask the office whether they accept it for your visit.
- What is Mary C. Rock's NPI number?
- 1265527139. 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 Mary C. Rock is enrolled with Medicare (CMS data updated October 2, 2026).
- 403 Lexington CirGrand Island, NE 68803 (308) 675‑2858
Group practices
Medicare enrollment lists Mary C. Rock as a member of this group (CMS data updated October 2, 2026).
- Kerry L Alfrey LLC2 clinicians in the group
Specialties
- Mental Health Counselorprimary
Other mental health counselors in Grand Island
Clinicians with the same Medicare primary specialty in Grand Island, NE — not a recommendation.
Other clinicians in Kerry L Alfrey LLC
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Graduation year | 2006 |
|---|---|
| Gender (as listed) | Female |
| Medicare assignment | May accept for some services |
| NPI (National Provider Identifier) | 1265527139 |
| 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