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OAAC, S.C.
NPI 1356397475
Anesthesiology - Pain Medicine in Oconomowoc, WI

Active since May 26, 2006
791 E SUMMIT AVE, OCONOMOWOC, WI 53066(262) 569-9400 Get Directions Write a Review

NPPES record last updated: September 11, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Sep 11, 2025, Aug 22, 2020 (2 updates tracked since 2020).

About Oaac, S.c. NPPES

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

OAAC, S.C. (NPI 1356397475) is a healthcare organization registered as a pain medicine in Oconomowoc, Wisconsin and active in the NPI registry since May 2006. The organization lists Terrence Gaynor, Authorized Official, as its authorized official.

NPPES Registry Identity

NPI1356397475
Entity TypeOrganization
Primary Taxonomy207LP2900X
Legal Business NameOAAC, S.C.
Location Address791 E SUMMIT AVEOconomowoc, WI 53066-3844
Mailing Address225 S Executive DrBrookfield, WI 53005-4266 · (262) 787-4026
Phone(262) 569-9400
Organization SubpartNo
Authorized OfficialTerrence GaynorAuthorized Official · (262) 569-9400
Enumeration DateMay 26, 2006
Last NPPES UpdateSeptember 11, 20252 updates tracked since enumeration
✔ NPI 1356397475 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyAnesthesiology · Pain MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207LP2900X
Definition
An anesthesiologist who provides a high level of care, either as a primary physician or consultant, for patients experiencing problems with acute, chronic and/or cancer pain in both hospital and ambulatory settings. Patient care needs are also coordinated with other specialists.
Also ListedAnesthesiologyTaxonomy 207L00000X
791 E SUMMIT AVE, Oconomowoc, WI 53066
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Other Identifiers 1

Medicaid32845700WI

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP

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 Oaac, S.C.'s NPI number?

The NPI number for Oaac, S.C. is 1356397475. It was assigned to this organization in the NPPES registry on May 26, 2006.

Where is Oaac, S.C. located?

Oaac, S.C. is located at 791 E Summit Ave, Oconomowoc, WI 53066. The listed phone number is (262) 569-9400.

What is Oaac, S.C.'s specialty?

The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.

When was this NPI record last updated?

The NPPES record for Oaac, S.C. 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 10 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.