Quick answers
- Does Amy N. Gruber accept Medicare assignment?
- Yes. Medicare's clinician data says Amy N. Gruber 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.
- How many Medicare patients does Amy N. Gruber see?
- In 2024, CMS data shows 273 Original Medicare patients and 346 services for Amy N. Gruber. This counts Original Medicare only and measures volume, not quality.
- What is Amy N. Gruber's NPI number?
- 1659626117. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Medicare activity in 2024
Official CMS public-use data for Amy N. Gruber, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 273 |
|---|---|
| Services billed to Medicare | 346 |
| Different services or procedures | 9 |
| Participating Medicare provider | Yes |
| Average age of these patients | 73 |
Most frequent services
- Emergency department visit with high level of medical decision making (99285)206 services
- Emergency department visit with moderate level of medical decision making (99284)89 services
- Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only (93010)32 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure74%
- High cholesterol73%
- Arthritis51%
- Ischemic heart disease33%
- COPD32%
- Diabetes30%
Hospitals where Amy N. Gruber works
Medicare's Facility Affiliation Data lists Amy N. Gruber at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Aspirus Ironwood HospitalIronwood, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231333
- McLaren Central MichiganMount Pleasant, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230080
- Munson Healthcare Grayling HospitalGrayling, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230058
- Up Health System PortageHancock, MI · Acute Care Hospital · Medicare rating: 5 of 5 stars · Emergency services: listed by Medicare · CCN 230108
Practice locations
Addresses where Amy N. Gruber is enrolled with Medicare (CMS data updated October 2, 2026).
- 2900 Collins RdLansing, MI 48910 (517) 975‑7500
- 500 Campus DrHancock, MI 49930
- 921 W Sharon AveHoughton, MI 49931 (906) 483‑1777
- N10561 Grandview LnIronwood, MI 49938 (906) 932‑2525
Group practices
Medicare enrollment lists Amy N. Gruber as a member of these groups (CMS data updated October 2, 2026).
- McLaren Hospital Group375 clinicians in the group
- Aspirus Ironwood Hospital and Clinics Inc165 clinicians in the group
- Portage Physician Practices Inc57 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Lansing
Clinicians with the same Medicare primary specialty in Lansing, MI — not a recommendation.
Other clinicians in McLaren Hospital Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 2012 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1659626117 |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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