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DR. KATHLEEN MARY TREBIAN M.D.
NPI 1326092693
Obstetrics & Gynecology in Milwaukee, WI

Active since May 20, 2006PECOS Enrolled
2524 E WEBSTER PL STE 303, MILWAUKEE, WI 53211(414) 271-1116(414) 271-1114 Get Directions Write a Review

NPPES record last updated: April 1, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Kathleen Mary Trebian M.d. NPPES

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

DR. KATHLEEN MARY TREBIAN M.D. (NPI 1326092693) is an individual obstetrics & gynecology provider in Milwaukee, Wisconsin, licensed in Wisconsin (33771-020) and active in the NPI registry since May 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1326092693
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. KATHLEEN MARY TREBIANCredential: M.D.
Location Address2524 E WEBSTER PL STE 303Milwaukee, WI 53211-4268
Mailing Address2524 E Webster Pl Ste 303Milwaukee, WI 53211-4268 · (414) 271-1116 · Fax (414) 271-1114
Phone(414) 271-1116
Fax(414) 271-1114
Sole ProprietorYes
Enumeration DateMay 20, 2006
Last NPPES UpdateApril 1, 2020
NPPES CertifiedApril 1, 2020
✔ NPI 1326092693 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in WI · 33771-020
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
2524 E WEBSTER PL STE 303, Milwaukee, WI 53211
Open in Google Maps ↗

Other Identifiers 1

Medicaid32455900WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Network Health, UnitedHealthcare.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kathleen Mary Trebian 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.

Medicare Billing Reassignment

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

Obhg Wisconsin, S.C.
639 mi
Obstetrics & Gynecology
777 LOWNDES HILL RD BLDG 1
Greenville, SC 29607
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Obhg Wisconsin Sc
  • 58 clinicians in this Medicare group
NPI 1699273862 (864) 908-3530

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53211 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
$67.37 typical visit price
range $17.40 – $133.76
Typical copayment $16.84 (range $4.35 – $33.44)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Kathleen Trebian's NPI number?

The NPI number for Kathleen Trebian is 1326092693. It was assigned to this individual provider in the NPPES registry on May 20, 2006.

Where is Kathleen Trebian located?

Kathleen Trebian practices at 2524 E Webster Pl Ste 303, Milwaukee, WI 53211. The listed phone number is (414) 271-1116.

What is Kathleen Trebian's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Kathleen Trebian enrolled in Medicare?

Yes. Kathleen Trebian is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Kathleen Trebian's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Trebian reassigns Medicare benefits to Obhg Wisconsin, S.C. (Greenville, SC). 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 Kathleen Trebian's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathleen Trebian accept?

Health plans from Anthem Blue Cross and Blue Shield, Network Health and UnitedHealthcare list Kathleen Trebian 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 Kathleen Trebian was last updated on April 1, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.