DR. JILLIAN LOUISE EWING HAAS M.D.
NPI 1982929410
Pediatrics in Waukesha, WI
About Dr. Jillian Louise Ewing Haas M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JILLIAN LOUISE EWING HAAS M.D. (NPI 1982929410) is an individual pediatrics provider in Waukesha, Wisconsin, licensed in Wisconsin (56903) and active in the NPI registry since March 2010. She is enrolled in Medicare PECOS, is affiliated with Waukesha Memorial Hospital, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses 2
Other Names 1
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. Jillian Louise Ewing Haas 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 Reassignment
Medicare enrollment records show Jillian Ewing Haas reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Menomonee Falls, WI 53051
- Reassigned Medicare billing, Wisconsin enrollment
- 2,294 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Waukesha Memorial Hospital
Acute Care Hospitals · Waukesha, WIFroedtert Memorial Lutheran Hospital
Acute Care Hospitals · Milwaukee, WIPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 53186 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 13
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WAUKESHA, WI 53186
WAUKESHA, WI 53186
WAUKESHA, WI 53186
WAUKESHA, WI 53186
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 Jillian Ewing Haas's NPI number?
The NPI number for Jillian Ewing Haas is 1982929410. It was assigned to this individual provider in the NPPES registry on March 27, 2010. The provider is also known as Dr. Jillian Louise Ewing M.D..
Where is Jillian Ewing Haas located?
Jillian Ewing Haas practices at 2315 E Moreland Blvd Westbrook Health Center, Waukesha, WI 53186. The listed phone number is (262) 532-5700.
What is Jillian Ewing Haas's specialty?
The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.
Is Jillian Ewing Haas enrolled in Medicare?
Yes. Jillian Ewing Haas 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 organization bills Medicare for Jillian Ewing Haas's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jillian Ewing Haas reassigns Medicare benefits to Froedtert & the Medical College Of Wisconsin Community Physicians, Inc. (Menomonee Falls, WI). The 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 Jillian Ewing Haas's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jillian Ewing Haas accept?
Health plans from Aspirus Health Plan list Jillian Ewing Haas 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 Jillian Ewing Haas affiliated with any hospitals?
According to CMS data, Jillian Ewing Haas is affiliated with Waukesha Memorial Hospital and Froedtert Memorial Lutheran Hospital.
When was this NPI record last updated?
The NPPES record for Jillian Ewing Haas was last updated on August 19, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.