LEANNE MARIE MANSFIELD MD
NPI 1356861843
Pediatrics - Pediatric Rheumatology in Grand Rapids, MI
About Leanne Marie Mansfield Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LEANNE MARIE MANSFIELD MD (NPI 1356861843) is an individual pediatric rheumatology provider in Grand Rapids, Michigan, licensed in Michigan (4301518463) and active in the NPI registry since June 2017. She is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
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)
Leanne Marie Mansfield Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Leanne Mansfield reassigns Medicare billing to 2 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
Middleton, WI 53562
- Reassigned Medicare billing, Wisconsin enrollment
- 2,832 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.
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 Leanne Mansfield's NPI number?
The NPI number for Leanne Mansfield is 1356861843. It was assigned to this individual provider in the NPPES registry on June 26, 2017.
Where is Leanne Mansfield located?
Leanne Mansfield practices at 35 Michigan St NE Ste 4150, Grand Rapids, MI 49503. The listed phone number is (616) 267-2700.
What is Leanne Mansfield's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Rheumatology, with taxonomy code 2080P0216X.
Is Leanne Mansfield enrolled in Medicare?
Yes. Leanne Mansfield is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Leanne Mansfield's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Leanne Mansfield reassigns Medicare benefits to 2 organizations: Spectrum Health Primary Care Partners (Grand Rapids, MI) and University Of Wisconsin Medical Foundation, Inc (Middleton, WI). 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 Leanne Mansfield's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Leanne Mansfield accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company and Security Health Plan list Leanne Mansfield 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 Leanne Mansfield was last updated on September 28, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 40 days 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.
# Leanne Marie Mansfield, MD · NPI 1356861843
Pediatric Rheumatology physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since June 26, 2017.
## Identity
- **NPI:** 1356861843 (Entity type: Individual)
- **Enumerated:** June 26, 2017
- **Primary specialty:** Pediatrics - Pediatric Rheumatology · taxonomy 2080P0216X
- **State license:** 4301518463 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 35 MICHIGAN ST NE STE 4150, Grand Rapids, MI 49503-2529
- **Phone:** (616) 267-2700
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Spectrum Health Primary Care Partners (NPI 1326599671, Grand Rapids, MI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** September 28, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1356861843) · Data from the CMS NPPES public registry.