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GERALD J. KALLAS M.D.
NPI 1770959462
Internal Medicine in Oconomowoc, WI

Active since August 17, 2015PECOS Enrolled
1437 N SUMMIT AVE, OCONOMOWOC, WI 53066(414) 322-1434 Get Directions Write a Review

NPPES record last updated: August 17, 2015. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Gerald J. Kallas M.d. NPPES

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

GERALD J. KALLAS M.D. (NPI 1770959462) is an individual internal medicine provider in Oconomowoc, Wisconsin, licensed in Wisconsin (14655-20) and active in the NPI registry since August 2015. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1770959462
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameGERALD J. KALLASCredential: M.D.
Location Address1437 N SUMMIT AVEOconomowoc, WI 53066-9461
Mailing Address1437 N Summit AveOconomowoc, WI 53066-9461 · (414) 322-1434
Phone(414) 322-1434
Sole ProprietorYes
Enumeration DateAugust 17, 2015
✔ NPI 1770959462 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in WI · 14655-20
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
1437 N SUMMIT AVE, Oconomowoc, WI 53066
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Other Identifiers 1

Medicaid14655-20WI

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Gerald J. Kallas M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53066 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$123.69 typical visit price
range $53.90 – $163.24
Typical copayment $30.92 (range $13.47 – $40.81)
Most-billed visit code 99204
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

CECELIA SENIOR HOMES OF WEST ALLIS, INC.
Assisted Living Facility
1437 N SUMMIT AVE
OCONOMOWOC, WI 53066
Waukesha County (414) 322-1434

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 Gerald Kallas's NPI number?

The NPI number for Gerald Kallas is 1770959462. It was assigned to this individual provider in the NPPES registry on August 17, 2015.

Where is Gerald Kallas located?

Gerald Kallas practices at 1437 N Summit Ave, Oconomowoc, WI 53066. The listed phone number is (414) 322-1434.

What is Gerald Kallas's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Gerald Kallas enrolled in Medicare?

Yes. Gerald Kallas is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Gerald Kallas was last updated on August 17, 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.