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WAUKESHA COUNTY
NPI 1164546347
Community/Behavioral Health in Waukesha, WI

Active since March 16, 2007
514 RIVERVIEW AVE, WAUKESHA, WI 53188(262) 548-7665(262) 970-6696 Get Directions Write a Review

NPPES record last updated: November 10, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Nov 10, 2025, Dec 21, 2015 (2 updates tracked since 2015).

About Waukesha County NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WAUKESHA COUNTY (NPI 1164546347) is a healthcare organization registered as a community/behavioral health in Waukesha, Wisconsin and active in the NPI registry since March 2007. The organization lists David M Derosier, Credentialing Specialist, as its authorized official.

NPPES Registry Identity

NPI1164546347
Entity TypeOrganization
Primary Taxonomy251S00000X
Legal Business NameWAUKESHA COUNTY
Location Address514 RIVERVIEW AVEWaukesha, WI 53188-3632
Mailing Address514 Riverview AveWaukesha, WI 53188-3631 · (262) 548-7399 · Fax (262) 970-6696
Phone(262) 548-7665
Fax(262) 970-6696
Organization SubpartNo
Authorized OfficialDavid M DerosierCredentialing Specialist · (262) 548-8431
Enumeration DateMarch 16, 2007
Last NPPES UpdateNovember 10, 20252 updates tracked since enumeration
NPPES CertifiedNovember 10, 2025
✔ NPI 1164546347 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyCommunity/Behavioral HealthAgencies
Taxonomy Code251S00000X
License✔ Licensed in WI · 32816300
Definition
A private or public agency usually under local government jurisdiction, responsible for assuring the delivery of community based mental health, intellectual disabilities, substance abuse and/or behavioral health services to individuals with those disabilities. Services may range from companion care, respite, transportation, community integration, crisis intervention and stabilization, supported employment, day support, prevocational services, residential support, therapeutic and supportive consultation, environmental modifications, intensive in-home therapy and day treatment, in addition to traditional mental health and behavioral treatment.
514 RIVERVIEW AVE, Waukesha, WI 53188
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Other Names 1

Other NameWaukesha County (nurse Med Services)

Other Identifiers 1

Medicaid32816300WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Dean Health Plan.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Waukesha County is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

79

Medicare enrollment records show 79 clinicians reassign Medicare billing to Waukesha County, which bills Medicare for the services they deliver. Of these, 12 practice at this address and 45 within 10 miles. Listed here are the 20 practicing nearest to this location.

Clinicians by Medicare Specialty 8

Clinical Social Worker23
Psychiatry20
Mental Health Counselor15
Clinical Psychologist8
Nurse Practitioner8
Anesthesiology3
Marriage and Family Therapist1
Psychologist Billing Independently1

Nearest to this location (20)

See all 79
Ashley Holzbauer, LCSW, CSAC
Clinical Social Worker
NPI 1114683356
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7665
✔ PECOS✔ Accepts MedicareSame address
Lauren Lanza
Clinical Social Worker
NPI 1417404674
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOSSame address
Jillian O'grady, APNP
Nurse Practitioner
NPI 1821467986
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Rachel O'sullivan, LCSW
Clinical Social Worker
NPI 1659030393
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Emma Geach, LCSW, SAC
Clinical Social Worker
NPI 1164288791
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7212
✔ PECOSSame address
Isaac Henderson, LPC, CSAC
Mental Health Counselor
NPI 1962974618
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 246-2732
✔ PECOS✔ Accepts MedicareSame address
Gunjan Khandpur, MD
Psychiatry
NPI 1548491343
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7951
✔ PECOSSame address
Claire Layton, LCSW, CSAC, ICS
Clinical Social Worker
NPI 1174037196
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Mercy Mahaga, APNP, RN
Nurse Practitioner
NPI 1760882229
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOSSame address
Leah Matthews Downey, LCSW, CSAC
Clinical Social Worker
NPI 1043502982
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 388-5508
✔ PECOS✔ Accepts MedicareSame address
Deborah Pichler, APNP, FNP-BC, PMHNP
Nurse Practitioner
NPI 1497017057
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Mary Yang, DNP, RN, FNP-BC
Nurse Practitioner
NPI 1669995411
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Rachel Feller, LCSW, SAC-IT
Clinical Social Worker
NPI 1003516923
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 893-5317
✔ PECOSSame address
Madeline Reinke, LCSW
Clinical Social Worker
NPI 1720717168
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 547-3388
✔ PECOSSame address
Candice Scoville, LPC, SAC-IT
Mental Health Counselor
NPI 1619629995
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Elizabeth Tinsley, PH.D.
Psychologist Billing Independently
NPI 1518527639
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts MedicareSame address
Jennifer Laurie Volz, LCSW, SAC
Clinical Social Worker
NPI 1932809837
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOSSame address
Melissa Geason
Clinical Social Worker
NPI 1821452095
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts Medicare0.1 mi
Jessica Juneau, PSYD
Clinical Psychologist
NPI 1891163234
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts Medicare0.1 mi
Gobind Kang-Chahal, MD
Psychiatry
NPI 1265533392
514 RIVERVIEW AVE
Waukesha, WI 53188
(262) 548-7666
✔ PECOS✔ Accepts Medicare0.1 mi
See all 79 clinicians

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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 Waukesha County's NPI number?

The NPI number for Waukesha County is 1164546347. It was assigned to this organization in the NPPES registry on March 16, 2007. The provider is also known as Waukesha County (Nurse Med Services).

Where is Waukesha County located?

Waukesha County is located at 514 Riverview Ave, Waukesha, WI 53188. The listed phone number is (262) 548-7665.

What is Waukesha County's specialty?

The primary specialty registered for this NPI is Community/Behavioral Health with taxonomy code 251S00000X.

Is Waukesha County enrolled in Medicare?

Yes. Waukesha County is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Waukesha County?

According to the CMS Revalidation Reassignment List (October 2026 release), 79 clinicians in 8 Medicare specialties reassign their Medicare billing to Waukesha County. A 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 the clinician's services. The largest specialties are Clinical Social Worker (23), Psychiatry (20) and Mental Health Counselor (15). Of these, 12 practice at this address and 45 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Waukesha County accept?

Health plans from Dean Health Plan list Waukesha County 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 Waukesha County was last updated on November 10, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 months 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.