DR. KAREN J DYER M.D.
NPI 1003854530
Pediatrics in Saint Joseph, MI
About Dr. Karen J Dyer M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KAREN J DYER M.D. (NPI 1003854530) is an individual pediatrics provider in Saint Joseph, Michigan, licensed in Michigan (4301066862) and active in the NPI registry since June 2006. She is enrolled in Medicare PECOS and maintains a secondary practice location in Rockford.
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 (PECOS)
Dr. Karen J Dyer M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
4Medicare enrollment records show Karen Dyer reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Joseph, MI 49085
- Reassigned Medicare billing, Michigan enrollment
- 724 clinicians in this Medicare group
Sycamore, IL 60178
- Reassigned Medicare billing, Illinois enrollment
- 474 clinicians in this Medicare group
Peoria, IL 61615
- Reassigned Medicare billing, Illinois enrollment
- 2,944 clinicians in this Medicare group
Christiansted, St. Croix, VI 00821
- Reassigned Medicare billing, U.S. Virgin Islands enrollment
- 331 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 49085 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SAINT JOSEPH, MI 49085
SAINT JOSEPH, MI 49085
SAINT JOSEPH, MI 49085
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 Karen Dyer's NPI number?
The NPI number for Karen Dyer is 1003854530. It was assigned to this individual provider in the NPPES registry on June 4, 2006.
Where is Karen Dyer located?
Karen Dyer practices at 1234 Napier Ave, Saint Joseph, MI 49085. The listed phone number is (269) 985-4632.
What is Karen Dyer's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Karen Dyer enrolled in Medicare?
Yes. Karen Dyer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Karen Dyer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Karen Dyer reassigns Medicare benefits to 4 organizations: Lakeland Medical Practices (Saint Joseph, MI), Swedishamerican Hospital (Sycamore, IL), Osf Multi-Specialty Group (Peoria, IL) and Governor Juan F. Luis Hospital & Medical Center (Christiansted, St. Croix, VI). 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 Karen Dyer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Karen Dyer accept?
Health plans from Aspirus Health Plan and Priority Health list Karen Dyer 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 Karen Dyer was last updated on July 15, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Dr. Karen J Dyer, M.D. · NPI 1003854530
Pediatrics physician in Saint Joseph, Michigan. Individual provider, active in the CMS NPPES registry since June 4, 2006.
## Identity
- **NPI:** 1003854530 (Entity type: Individual)
- **Enumerated:** June 4, 2006
- **Primary specialty:** Pediatrics · taxonomy 208000000X
- **State license:** 4301066862 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 1234 NAPIER AVE, Saint Joseph, MI 49085-2112
- **Phone:** (269) 985-4632
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 4 organizations under Medicare reassignment (form CMS-855R): Lakeland Medical Practices (NPI 1538397120, Saint Joseph, MI); Swedishamerican Hospital (NPI 1528234242, Sycamore, IL); Osf Multi-Specialty Group (NPI 1154908929, Peoria, IL); Governor Juan F. Luis Hospital & Medical Center (NPI 1972503647, Christiansted, St. Croix, VI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 15, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1003854530) · Data from the CMS NPPES public registry.