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DR. WILLIAM A FINDLAY III MD
NPI 1821049651
Psychiatry & Neurology - Child & Adolescent Psychiatry in Milwaukee, WI

Active since May 15, 2006PECOS Enrolled
CHILD DEVELOPMENT CENTER OF CHW, 1000 NORTH 92ND STREET, MILWAUKEE, WI 53226(414) 805-3666 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 11, 2025, Jul 21, 2022 (2 updates tracked since 2022).

About Dr. William A Findlay Iii Md NPPES

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

DR. WILLIAM A FINDLAY III MD (NPI 1821049651) is an individual child & adolescent psychiatry provider in Milwaukee, Wisconsin, licensed in Wisconsin (41544020) and active in the NPI registry since May 2006. He is enrolled in Medicare PECOS and is a graduate of University Of Illinois College Of Med (chi/peor/rock/chm-urb) (1997).

NPPES Registry Identity

NPI1821049651
Entity TypeIndividualMale
Primary Taxonomy2084P0804X
Provider Legal NameDR. WILLIAM A FINDLAY IIICredential: MD
Location AddressCHILD DEVELOPMENT CENTER OF CHW, 1000 NORTH 92ND STREETMilwaukee, WI 53226
Mailing Address11101 West Lincoln Avenue, Rogers HospitalMilwaukee, WI 53226-3533 · (414) 327-3000
Phone(414) 805-3666
Sole ProprietorNo
Medical School CMSUniversity Of Illinois College Of Med (chi/peor/rock/chm-urb)Graduated 1997
Enumeration DateMay 15, 2006
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1821049651 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPsychiatry & Neurology · Child & Adolescent PsychiatryAllopathic & Osteopathic Physicians
Taxonomy Code2084P0804X
License✔ Licensed in WI · 41544020
Definition
Child & Adolescent Psychiatry is a subspecialty of psychiatry with additional skills and training in the diagnosis and treatment of developmental, behavioral, emotional, and mental disorders of childhood and adolescence.
Also ListedPediatrics · Developmental - Behavioral PediatricsTaxonomy 2080P0006X · License 41544 (WI)

Other Identifiers 1

Medicaid32613500WI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William A Findlay Iii Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID3274533294
PECOS Enrollment IDI20061221000465
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show William Findlay reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Rogers Memorial Hospital Incorporated
Psychiatric Hospital
34700 VALLEY RD
Oconomowoc, WI 53066
  • Reassigned Medicare billing, Wisconsin enrollment
  • 99 clinicians in this Medicare group
NPI 1053329581 (800) 767-4411

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 William Findlay's NPI number?

The NPI number for William Findlay is 1821049651. It was assigned to this individual provider in the NPPES registry on May 15, 2006.

Where is William Findlay located?

William Findlay practices at Child Development Center Of Chw 1000 North 92nd Street, Milwaukee, WI 53226. The listed phone number is (414) 805-3666.

What is William Findlay's specialty?

The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Child & Adolescent Psychiatry, with taxonomy code 2084P0804X.

Is William Findlay enrolled in Medicare?

Yes. William Findlay is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for William Findlay's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Findlay reassigns Medicare benefits to Rogers Memorial Hospital Incorporated (Oconomowoc, 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 William Findlay's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Findlay was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.