DR. ROBERT WILLIAM WIERENGA MD
NPI 1881856888
Emergency Medicine in Kalamazoo, MI
About Dr. Robert William Wierenga Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ROBERT WILLIAM WIERENGA MD (NPI 1881856888) is an individual emergency medicine provider in Kalamazoo, Michigan, licensed in Michigan (4301092580) and active in the NPI registry since June 2008. He is enrolled in Medicare PECOS, maintains a secondary practice location in Fishers, and is a graduate of Wayne State University School Of Medicine (2008).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 1
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
Dr. Robert William Wierenga 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
3Medicare enrollment records show Robert Wierenga reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Elkhart, IN 46514
- Reassigned Medicare billing, Indiana enrollment
- 598 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 1,781 clinicians in this Medicare group
Indianapolis, IN 46202
- Reassigned Medicare billing, Indiana enrollment
- 5,212 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
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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49007 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 10
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
KALAMAZOO, MI 49007
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 Robert Wierenga's NPI number?
The NPI number for Robert Wierenga is 1881856888. It was assigned to this individual provider in the NPPES registry on June 30, 2008.
Where is Robert Wierenga located?
Robert Wierenga practices at 125 S Kalamazoo Mall Ste 204, Kalamazoo, MI 49007. The listed phone number is (269) 343-3900.
What is Robert Wierenga's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Robert Wierenga enrolled in Medicare?
Yes. Robert Wierenga 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 Robert Wierenga's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Robert Wierenga reassigns Medicare benefits to 3 organizations: Cep America LLC (Elkhart, IN), Indiana University Health Care Associates, Inc. (Indianapolis, IN) and Iu Health Medical Group, LLC (Indianapolis, IN). 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 Robert Wierenga's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Robert Wierenga accept?
Health plans from CareSource list Robert Wierenga 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 Robert Wierenga was last updated on March 11, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.
# Dr. Robert William Wierenga, MD · NPI 1881856888
Emergency Medicine physician in Kalamazoo, Michigan. Individual provider, active in the CMS NPPES registry since June 30, 2008.
## Identity
- **NPI:** 1881856888 (Entity type: Individual)
- **Enumerated:** June 30, 2008
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** 4301092580 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 125 S KALAMAZOO MALL STE 204, Kalamazoo, MI 49007-4869
- **Phone:** (269) 343-3900
## 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): Cep America LLC (NPI 1104620640, Elkhart, IN); Indiana University Health Care Associates, Inc. (NPI 1679949002, Indianapolis, IN); Iu Health Medical Group, LLC (NPI 1326893777, Indianapolis, IN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Wayne State University School Of Medicine, class of 2008
## Record status
- **NPPES last updated:** March 11, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1881856888) · Data from the CMS NPPES public registry.