GREGORY S MERVENNE MD
NPI 1215955752
Emergency Medicine - Hospice and Palliative Medicine in Grand Rapids, MI
About Gregory S Mervenne Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
GREGORY S MERVENNE MD (NPI 1215955752) is an individual hospice and palliative medicine provider in Grand Rapids, Michigan, licensed in Michigan (4301060010) and active in the NPI registry since July 2006. He is enrolled in Medicare PECOS, is affiliated with Aspirus Keweenaw Hospital And Clinics, and is a graduate of Other (1992).
NPPES Registry Identity
Specialties & Licenses 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Gregory S Mervenne Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
7Medicare enrollment records show Gregory Mervenne reassigns Medicare billing to 7 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 2,446 clinicians in this Medicare group
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 265 clinicians in this Medicare group
Portage, MI 49024
- Reassigned Medicare billing, Michigan enrollment
- 17 clinicians in this Medicare group
Adrian, MI 49221
- Reassigned Medicare billing, Michigan enrollment
- 95 clinicians in this Medicare group
Traverse City, MI 49684
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: Interlochen Emergency Group PC
- 60 clinicians in this Medicare group
Charlevoix, MI 49720
- Reassigned Medicare billing, Michigan enrollment
- 97 clinicians in this Medicare group
Houghton, MI 49931
- Reassigned Medicare billing, Michigan enrollment
- Also billed through NPI 1023161932 (Michigan)
- 210 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Aspirus Keweenaw Hospital And Clinics
Critical Access Hospitals · Laurium, MICharlevoix Area Hospital
Critical Access Hospitals · Charlevoix, MIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49503 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
GRAND RAPIDS, MI 49503
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Gregory Mervenne's NPI number?
The NPI number for Gregory Mervenne is 1215955752. It was assigned to this individual provider in the NPPES registry on July 17, 2006.
Where is Gregory Mervenne located?
Gregory Mervenne practices at 145 Michigan St NE Suite 4400, Grand Rapids, MI 49503. The listed phone number is (616) 391-9945.
What is Gregory Mervenne's specialty?
The primary specialty registered for this NPI is Emergency Medicine, specializing in Hospice and Palliative Medicine, with taxonomy code 207PH0002X.
Is Gregory Mervenne enrolled in Medicare?
Yes. Gregory Mervenne is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Gregory Mervenne's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Gregory Mervenne reassigns Medicare benefits to 7 organizations: Spectrum Health Primary Care Partners (Grand Rapids, MI), Ecs Western Michigan PC (Grand Rapids, MI), Center For Vein Restoration Mi PLLC (Portage, MI), Sound Physicians Emergency Medicine Of Michigan, PLLC (Adrian, MI), Interlochen Emergency Group, P.C. (Traverse City, MI) and 2 more organizations, listed in the Medicare section above. Each reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Gregory Mervenne's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Gregory Mervenne accept?
Health plans from Priority Health list Gregory Mervenne as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Gregory Mervenne affiliated with any hospitals?
According to CMS data, Gregory Mervenne is affiliated with Aspirus Keweenaw Hospital And Clinics and Charlevoix Area Hospital.
When was this NPI record last updated?
The NPPES record for Gregory Mervenne was last updated on April 2, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Gregory S Mervenne, MD · NPI 1215955752
Hospice and Palliative Medicine physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since July 17, 2006.
## Identity
- **NPI:** 1215955752 (Entity type: Individual)
- **Enumerated:** July 17, 2006
- **Primary specialty:** Emergency Medicine - Hospice and Palliative Medicine · taxonomy 207PH0002X
- **State license:** 4301060010 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 145 MICHIGAN ST NE, SUITE 4400, Grand Rapids, MI 49503-2562
- **Phone:** (616) 391-9945 · **Fax:** (616) 486-6346
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 7 organizations under Medicare reassignment (form CMS-855R): Spectrum Health Primary Care Partners (NPI 1326599671, Grand Rapids, MI); Ecs Western Michigan PC (NPI 1992281000, Grand Rapids, MI); Center For Vein Restoration Mi PLLC (NPI 1720388267, Portage, MI); Sound Physicians Emergency Medicine Of Michigan, PLLC (NPI 1568913473, Adrian, MI); Interlochen Emergency Group, P.C. (NPI 1336821495, Traverse City, MI); and 2 more · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 1992
## Record status
- **NPPES last updated:** April 2, 2014
---
Source: [NPI Profile](https://npiprofile.com/npi/1215955752) · Data from the CMS NPPES public registry.