JULIE JEAN SOMMERFIELD-RONEK MD
NPI 1902955214
Pediatrics - Pediatric Cardiology in Grand Rapids, MI
About Julie Jean Sommerfield-ronek Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JULIE JEAN SOMMERFIELD-RONEK MD (NPI 1902955214) is an individual pediatric cardiology provider in Grand Rapids, Michigan, licensed in Michigan (4301089611) and active in the NPI registry since January 2007. She is enrolled in Medicare PECOS and is a graduate of George Washington University School Of Medicine (2003).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 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
Julie Jean Sommerfield-ronek 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 Julie Sommerfield-ronek 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
- 2,446 clinicians in this Medicare group
Grand Rapids, MI 49503
- Reassigned Medicare billing, Michigan enrollment
- 405 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
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
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 Julie Sommerfield-ronek's NPI number?
The NPI number for Julie Sommerfield-ronek is 1902955214. It was assigned to this individual provider in the NPPES registry on January 9, 2007. The provider is also known as Julie Jean Sommerfield MD.
Where is Julie Sommerfield-ronek located?
Julie Sommerfield-ronek practices at 25 Michigan St NE Ste 4200, Grand Rapids, MI 49503. The listed phone number is (616) 267-9150.
What is Julie Sommerfield-ronek's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Julie Sommerfield-ronek enrolled in Medicare?
Yes. Julie Sommerfield-ronek 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 Julie Sommerfield-ronek's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Julie Sommerfield-ronek reassigns Medicare benefits to 3 organizations: Spectrum Health Primary Care Partners (Grand Rapids, MI), Spectrum Health Hospitals (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 Julie Sommerfield-ronek's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Julie Sommerfield-ronek accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Blue Care Network of Michigan and Blue Cross Blue Shield of Michigan Mutual Insurance Company and 1 other insurer list Julie Sommerfield-ronek 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 Julie Sommerfield-ronek was last updated on March 2, 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.
# Julie Jean Sommerfield-Ronek, MD · NPI 1902955214
Pediatric Cardiology physician in Grand Rapids, Michigan. Individual provider, active in the CMS NPPES registry since January 9, 2007.
## Identity
- **NPI:** 1902955214 (Entity type: Individual)
- **Enumerated:** January 9, 2007
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 4301089611 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 25 MICHIGAN ST NE STE 4200, Grand Rapids, MI 49503-2559
- **Phone:** (616) 267-9150
## 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): Spectrum Health Primary Care Partners (NPI 1326599671, Grand Rapids, MI); Spectrum Health Hospitals (NPI 1558407189, Grand Rapids, MI); Lakeland Medical Practices (NPI 1538397120, Saint Joseph, MI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** George Washington University School Of Medicine, class of 2003
## Record status
- **NPPES last updated:** March 2, 2021
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Source: [NPI Profile](https://npiprofile.com/npi/1902955214) · Data from the CMS NPPES public registry.