STEPHEN GUNNINK DO
NPI 1912427402
Pediatrics - Pediatric Emergency Medicine in Grand Rapids, MI
About Stephen Gunnink Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
STEPHEN GUNNINK DO (NPI 1912427402) is an individual pediatric emergency medicine provider in Grand Rapids, Michigan, licensed in Michigan (5101025654) and active in the NPI registry since June 2017. He is enrolled in Medicare PECOS and is a graduate of Other (2017).
NPPES Registry Identity
Specialties & Licenses 3
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
Stephen Gunnink Do 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
3Medicare enrollment records show Stephen Gunnink reassigns Medicare billing to 3 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
- 265 clinicians in this Medicare group
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 192 clinicians in this Medicare group
Saint Joseph, MI 49085
- Reassigned Medicare billing, Michigan enrollment
- 724 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.
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 Stephen Gunnink's NPI number?
The NPI number for Stephen Gunnink is 1912427402. It was assigned to this individual provider in the NPPES registry on June 26, 2017.
Where is Stephen Gunnink located?
Stephen Gunnink practices at 100 Michigan St. SE, Grand Rapids, MI 49503. The listed phone number is (616) 267-1090.
What is Stephen Gunnink's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Emergency Medicine, with taxonomy code 2080P0204X.
Is Stephen Gunnink enrolled in Medicare?
Yes. Stephen Gunnink 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 Stephen Gunnink's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Stephen Gunnink reassigns Medicare benefits to 3 organizations: Ecs Western Michigan PC (Grand Rapids, MI), Visionary Medical Services PC (Grand Rapids, MI) and Lakeland Medical Practices (Saint Joseph, MI). 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 Stephen Gunnink's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Stephen Gunnink accept?
Health plans from Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company list Stephen Gunnink 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.
When was this NPI record last updated?
The NPPES record for Stephen Gunnink was last updated on January 22, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 21 months 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.
# Stephen Gunnink, DO · NPI 1912427402
Pediatric Emergency Medicine physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since June 26, 2017.
## Identity
- **NPI:** 1912427402 (Entity type: Individual)
- **Enumerated:** June 26, 2017
- **Primary specialty:** Pediatrics - Pediatric Emergency Medicine · taxonomy 2080P0204X
- **State license:** 5101025654 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 MICHIGAN ST. SE, Grand Rapids, MI 49503-2527
- **Phone:** (616) 267-1090
## 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:** 3 organizations under Medicare reassignment (form CMS-855R): Ecs Western Michigan PC (NPI 1992281000, Grand Rapids, MI); Visionary Medical Services PC (NPI 1538216569, Grand Rapids, MI); Lakeland Medical Practices (NPI 1538397120, Saint Joseph, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2017
## Record status
- **NPPES last updated:** January 22, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1912427402) · Data from the CMS NPPES public registry.