DR. KASEY J CHASZCZEWSKI M.D.
NPI 1215376868
Pediatrics - Pediatric Cardiology in Milwaukee, WI
About Dr. Kasey J Chaszczewski M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. KASEY J CHASZCZEWSKI M.D. (NPI 1215376868) is an individual pediatric cardiology provider in Milwaukee, Wisconsin, licensed in Wisconsin (74942) and active in the NPI registry since June 2013. He is enrolled in Medicare PECOS, is affiliated with Childrens Hospital Of Wisconsin, and maintains a secondary practice location in Milwaukee.
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 and accepts Medicare assignment
Dr. Kasey J Chaszczewski M.d. 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 Kasey Chaszczewski 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Childrens Hospital Of Wisconsin
Childrens · Milwaukee, WIMedicare 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 Kasey Chaszczewski's NPI number?
The NPI number for Kasey Chaszczewski is 1215376868. It was assigned to this individual provider in the NPPES registry on June 17, 2013.
Where is Kasey Chaszczewski located?
Kasey Chaszczewski practices at 9000 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 266-2380.
What is Kasey Chaszczewski's specialty?
The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Cardiology, with taxonomy code 2080P0202X.
Is Kasey Chaszczewski enrolled in Medicare?
Yes. Kasey Chaszczewski 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 Kasey Chaszczewski's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Kasey Chaszczewski 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 Kasey Chaszczewski's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Kasey Chaszczewski accept?
Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare), Network Health and UnitedHealthcare list Kasey Chaszczewski 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.
Is Kasey Chaszczewski affiliated with any hospitals?
According to CMS data, Kasey Chaszczewski is affiliated with Childrens Hospital Of Wisconsin.
When was this NPI record last updated?
The NPPES record for Kasey Chaszczewski was last updated on March 11, 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. Kasey J Chaszczewski, M.D. · NPI 1215376868
Pediatric Cardiology physician in Milwaukee, Wisconsin. Individual provider, active in the CMS NPPES registry since June 17, 2013.
## Identity
- **NPI:** 1215376868 (Entity type: Individual)
- **Enumerated:** June 17, 2013
- **Primary specialty:** Pediatrics - Pediatric Cardiology · taxonomy 2080P0202X
- **State license:** 74942 (Wisconsin)
- **Sole proprietor:** No
## Practice location
- **Address:** 9000 W WISCONSIN AVE, Milwaukee, WI 53226-4874
- **Phone:** (414) 266-2380
## 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:** State University Of New York At Stony Brook, School Of Medicine, class of 2013
## Record status
- **NPPES last updated:** March 11, 2024
- **Other identifiers:** Medicaid 1215376868 (WI)
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Source: [NPI Profile](https://npiprofile.com/npi/1215376868) · Data from the CMS NPPES public registry.