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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

TIMOTHY J HILL M.D.
NPI 1861478430
Emergency Medicine in Oconomowoc, WI

Active since December 15, 2005
791 E SUMMIT AVE, OCONOMOWOC, WI 53066(262) 569-0251(262) 569-0342 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Timothy J Hill M.d. NPPES

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

TIMOTHY J HILL M.D. (NPI 1861478430) is an individual emergency medicine provider in Oconomowoc, Wisconsin, licensed in Wisconsin (26665-020) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1861478430
Entity TypeIndividualMale
Primary Taxonomy207P00000X
Provider Legal NameTIMOTHY J HILLCredential: M.D.
Location Address791 E SUMMIT AVEOconomowoc, WI 53066-3844
Mailing Address6400 Industrial LoopGreendale, WI 53129-2452 · (414) 423-4100 · Fax (414) 423-4134
Phone(262) 569-0251
Fax(262) 569-0342
Sole ProprietorNo
Enumeration DateDecember 15, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1861478430 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyEmergency MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207P00000X
License✔ Licensed in WI · 26665-020
Definition
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.
791 E SUMMIT AVE, Oconomowoc, WI 53066
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Other Identifiers 1

Medicaid30644900WI

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.

MICHAEL J. PHILLIPS, M.D., S.C.
Pathology (Clinical Pathology/Laboratory Medicine)
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-0619
CATHERINE D KEULKS-TORINUS P.A.C.
Physician Assistant
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-0251
MICHAEL J PHILLIPS M.D.
Pathology (Clinical Pathology/Laboratory Medicine)
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-0619
AMBER C MAYO P.A.
Physician Assistant
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-0251
DR. TIMOTHY W WESTLAKE M.D.
Emergency Medicine
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-0251
DR. PALMIRA A JANUSONIS M.D.
Anesthesiology
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-9400
P. A. JANUSONIS, M.D., S.C.
Anesthesiology
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-9400
RAINA L. HOLLENBAUGH, M.D., S.C.
Anesthesiology (Pain Medicine)
791 E SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (262) 569-9400

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 Timothy Hill's NPI number?

The NPI number for Timothy Hill is 1861478430. It was assigned to this individual provider in the NPPES registry on December 15, 2005.

Where is Timothy Hill located?

Timothy Hill practices at 791 E Summit Ave, Oconomowoc, WI 53066. The listed phone number is (262) 569-0251.

What is Timothy Hill's specialty?

The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.

When was this NPI record last updated?

The NPPES record for Timothy Hill was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 22 days 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.