CHARLES M LEYS MD
NPI 1073660940
Surgery - Pediatric Surgery in Madison, WI
About Charles M Leys Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
CHARLES M LEYS MD (NPI 1073660940) is an individual pediatric surgery provider in Madison, Wisconsin, licensed in Wisconsin (60549) and active in the NPI registry since January 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Green Bay.
NPPES Registry Identity
Specialties & Licenses 2
Secondary Practice Location 1
Other Identifiers 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)
Charles M Leys Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
8Medicare enrollment records show Charles Leys reassigns Medicare billing to 8 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Madison, WI 53715
- Reassigned Medicare billing, Wisconsin enrollment
- 1,377 clinicians in this Medicare group
Middleton, WI 53562
- Reassigned Medicare billing, Illinois and Wisconsin enrollments
- 29 clinicians in this Medicare group
Roscoe, IL 61073
- Reassigned Medicare billing, Illinois enrollment
- 474 clinicians in this Medicare group
Hillsboro, WI 54634
- Reassigned Medicare billing, Wisconsin enrollment
- 928 clinicians in this Medicare group
Elm Grove, WI 53122
- Reassigned Medicare billing, Wisconsin enrollment
- 1,457 clinicians in this Medicare group
West Allis, WI 53227
- Reassigned Medicare billing, Wisconsin enrollment
- 4,609 clinicians in this Medicare group
Sheboygan, WI 53081
- Reassigned Medicare billing, Wisconsin enrollment
- 673 clinicians in this Medicare group
Green Bay, WI 54304
- Reassigned Medicare billing, Wisconsin enrollment
- 742 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.
MADISON, WI 53792
MADISON, WI 53792
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 Charles Leys's NPI number?
The NPI number for Charles Leys is 1073660940. It was assigned to this individual provider in the NPPES registry on January 4, 2007.
Where is Charles Leys located?
Charles Leys practices at 600 Highland Ave, Madison, WI 53792. The listed phone number is (608) 263-6420.
What is Charles Leys's specialty?
The primary specialty registered for this NPI is Surgery, specializing in Pediatric Surgery, with taxonomy code 2086S0120X.
Is Charles Leys enrolled in Medicare?
Yes. Charles Leys is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Charles Leys's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Charles Leys reassigns Medicare benefits to 8 organizations: Dean Health Systems, Inc (Madison, WI), University Of Wisconsin Medical Foundation, Inc (Middleton, WI), Swedishamerican Hospital (Roscoe, IL), Gundersen Clinic, Ltd. (Hillsboro, WI), Gundersen Lutheran Medical Center Inc (Elm Grove, WI) and 3 more organizations, listed in the Medicare section above. 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 Charles Leys's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Charles Leys accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), Dean Health Plan and Group Health Cooperative-SCW and 3 other insurers list Charles Leys 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 Charles Leys was last updated on July 1, 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.
# Charles M Leys, MD · NPI 1073660940
Pediatric Surgery physician in Madison, Wisconsin. Individual provider, active in the CMS NPPES registry since January 4, 2007.
## Identity
- **NPI:** 1073660940 (Entity type: Individual)
- **Enumerated:** January 4, 2007
- **Primary specialty:** Surgery - Pediatric Surgery · taxonomy 2086S0120X
- **State license:** 60549 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 600 HIGHLAND AVE, Madison, WI 53792-0001
- **Phone:** (608) 263-6420 · **Fax:** (608) 263-0440
## 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:** 8 organizations under Medicare reassignment (form CMS-855R): Dean Health Systems, Inc (NPI 1053358846, Madison, WI); University Of Wisconsin Medical Foundation, Inc (NPI 1598784555, Middleton, WI); Swedishamerican Hospital (NPI 1386054062, Roscoe, IL); Gundersen Clinic, Ltd. (NPI 1578517140, Hillsboro, WI); Gundersen Lutheran Medical Center Inc (NPI 1548992316, Elm Grove, WI); and 3 more · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** July 1, 2024
- **Other identifiers:** Medicaid 100029526 (WI)
---
Source: [NPI Profile](https://npiprofile.com/npi/1073660940) · Data from the CMS NPPES public registry.