DR. STEVEN R LEUTHNER MD
NPI 1104877950
Pediatrics - Neonatal-Perinatal Medicine in Milwaukee, WI
About Dr. Steven R Leuthner Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. STEVEN R LEUTHNER MD (NPI 1104877950) is an individual neonatal-perinatal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (36692) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of University Of Chicago, Pritzker School Of Medicine (1989).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
Other Identifiers 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 and accepts Medicare assignment
Dr. Steven R Leuthner 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
2Medicare enrollment records show Steven Leuthner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- Medicare enrollment name: Childrens Specialty Group Inc
- 424 clinicians in this Medicare group
Milwaukee, WI 53226
- Reassigned Medicare billing, Wisconsin enrollment
- 3,983 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.
MILWAUKEE, WI 53226
MILWAUKEE, WI 53226
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 Steven Leuthner's NPI number?
The NPI number for Steven Leuthner is 1104877950. It was assigned to this individual provider in the NPPES registry on May 15, 2006.
Where is Steven Leuthner located?
Steven Leuthner practices at 9000 W Wisconsin Ave Division Of Neonatology, Milwaukee, WI 53226. The listed phone number is (414) 266-6820.
What is Steven Leuthner's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.
Is Steven Leuthner enrolled in Medicare?
Yes. Steven Leuthner 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 Steven Leuthner's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Steven Leuthner reassigns Medicare benefits to 2 organizations: Children's Specialty Group, Inc. (Milwaukee, WI) and The Medical College Of Wisconsin, Inc. (Milwaukee, 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 Steven Leuthner's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Steven Leuthner accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), HealthPartners and UnitedHealthcare list Steven Leuthner 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 Steven Leuthner was last updated on March 5, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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. Steven R Leuthner, MD · NPI 1104877950
Neonatal-Perinatal Medicine physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since May 15, 2006.
## Identity
- **NPI:** 1104877950 (Entity type: Individual)
- **Enumerated:** May 15, 2006
- **Primary specialty:** Pediatrics - Neonatal-Perinatal Medicine · taxonomy 2080N0001X
- **State license:** 36692 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9000 W WISCONSIN AVE, DIVISION OF NEONATOLOGY, Milwaukee, WI 53226-4874
- **Phone:** (414) 266-6820 · **Fax:** (414) 266-6979
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Children's Specialty Group, Inc. (NPI 1942970405, Milwaukee, WI); The Medical College Of Wisconsin, Inc. (NPI 1699720086, Milwaukee, WI) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Chicago, Pritzker School Of Medicine, class of 1989
## Record status
- **NPPES last updated:** March 5, 2024
- **Other identifiers:** Medicaid 1104877950 (WI); Other 002000175
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Source: [NPI Profile](https://npiprofile.com/npi/1104877950) · Data from the CMS NPPES public registry.