Quick answers
- Does Jessica S. Grevenstuk accept Medicare assignment?
- Yes. Medicare's clinician data says Jessica S. Grevenstuk 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 Jessica S. Grevenstuk see?
- In 2024, CMS data shows 126 Original Medicare patients and 407 services for Jessica S. Grevenstuk. This counts Original Medicare only and measures volume, not quality.
- What is Jessica S. Grevenstuk's NPI number?
- 1588098685. 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 Jessica S. Grevenstuk, 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 | 126 |
|---|---|
| Services billed to Medicare | 407 |
| Different services or procedures | 8 |
| Participating Medicare provider | Yes |
| Average age of these patients | 70 |
Most frequent services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)196 services
- Continuous monitoring of blood sugar level in tissue fluid using sensor under skin with interpretation and report (95251)106 services
- Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient's (G2211)72 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 pressure75%
- High cholesterol75%
- Diabetes75%
- Chronic kidney disease52%
- Arthritis46%
- Depression40%
Hospitals where Jessica S. Grevenstuk works
Medicare's Facility Affiliation Data lists Jessica S. Grevenstuk 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.
- Mercy Health Saint Mary'sGrand Rapids, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230059
- Spectrum HealthGrand Rapids, MI · Acute Care Hospital · Medicare rating: 4 of 5 stars · Emergency services: listed by Medicare · CCN 230038
Practice locations
Addresses where Jessica S. Grevenstuk is enrolled with Medicare (CMS data updated October 2, 2026).
- 10047 Crossroad Ct SECaledonia, MI 49316 (616) 685‑8850
- 225 Commerce Ave SW, Catherine'S Health Center Mel TrotterGrand Rapids, MI 49503 (616) 336‑8800
- 310 Lafayette Ave SEGrand Rapids, MI 49503
Group practices
Medicare enrollment lists Jessica S. Grevenstuk as a member of these groups (CMS data updated October 2, 2026).
- Advantage Health/Saint Mary's Medical Group505 clinicians in the group
- Catherine's Health Center7 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Caledonia
Clinicians with the same Medicare primary specialty in Caledonia, MI — not a recommendation.
Other clinicians in Advantage Health/Saint Mary's Medical Group
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2020 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1588098685 |
| 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