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DR. KATHLEEN THERESE RYAN LOKER MD
NPI 1609079326
Pediatrics - Pediatric Infectious Diseases in Milwaukee, WI

Active since June 08, 2007PECOS Enrolled
9000 W WISCONSIN AVE, MILWAUKEE, WI 53226(414) 337-7070(414) 337-7093 Get Directions Write a Review

NPPES record last updated: October 23, 2020. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 23, 2020, Sep 28, 2020, Jan 11, 2017 (3 updates tracked since 2017).

About Dr. Kathleen Therese Ryan Loker Md NPPES

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

DR. KATHLEEN THERESE RYAN LOKER MD (NPI 1609079326) is an individual pediatric infectious diseases provider in Milwaukee, Wisconsin, licensed in Wisconsin (54489) and active in the NPI registry since June 2007. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1609079326
Entity TypeIndividualFemale
Primary Taxonomy2080P0208X
Provider Legal NameDR. KATHLEEN THERESE RYAN LOKERCredential: MD
Location Address9000 W WISCONSIN AVEMilwaukee, WI 53226-4874
Mailing Address9000 W Wisconsin AveMilwaukee, WI 53226-4874 · (414) 337-7070 · Fax (414) 337-7093
Phone(414) 337-7070
Fax(414) 337-7093
Sole ProprietorNo
Enumeration DateJune 8, 2007
Last NPPES UpdateOctober 23, 20203 updates tracked since enumeration
NPPES CertifiedOctober 23, 2020
✔ NPI 1609079326 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatrics · Pediatric Infectious DiseasesAllopathic & Osteopathic Physicians
Taxonomy Code2080P0208X
License✔ Licensed in WI · 54489
Definition
A pediatrician trained to care for children in the diagnosis, treatment and prevention of infectious diseases. This specialist can apply specific knowledge to affect a better outcome for pediatric infections with complicated courses, underlying diseases that predispose to unusual or severe infections, unclear diagnoses, uncommon diseases and complex or investigational treatments.
9000 W WISCONSIN AVE, Milwaukee, WI 53226
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Other Identifiers 1

Medicaid1609079326WI

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and more.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 Therese Ryan Loker Md 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 Reassignments

2

Medicare enrollment records show Kathleen Ryan Loker reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Children's Specialty Group, Inc.
Same address
Pediatrics
9000 W WISCONSIN AVE
Milwaukee, WI 53226
  • Reassigned Medicare billing, Wisconsin enrollment
  • Medicare enrollment name: Childrens Specialty Group Inc
  • 424 clinicians in this Medicare group
NPI 1942970405 (414) 266-2000
The Medical College Of Wisconsin, Inc.
0.1 mi
Internal Medicine
8701 WATERTOWN PLANK RD
Milwaukee, WI 53226
  • Reassigned Medicare billing, Wisconsin enrollment
  • 3,983 clinicians in this Medicare group
NPI 1699720086 (414) 955-7101

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

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.

MS. LESLIE L. TALBERT NP
Nurse Practitioner (Pediatrics)
9000 W WISCONSIN AVE, PEDIATRIC CRITICAL CARE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-3360
SARAH MARIE RUMLER DO
Pediatrics (Pediatric Hematology-Oncology)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-4170
ALISON COREN
Pediatrics (Pediatric Endocrinology)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-6750
BRANDON PALMER M.D.
Pediatrics
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 337-7050
AIDAN JAMES REID DO
Pediatrics
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-6800
KYNDAL LYN HETTICH RD, CSP, CD
Dietitian, Registered
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-5938
CARISA MARIE DIMATTINA LCSW
Social Worker (Clinical)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 581-4004
BREYA LOGAN WHITEFIELD PHD
Psychologist (Clinical)
9000 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 266-2000

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 Ryan Loker's NPI number?

The NPI number for Kathleen Ryan Loker is 1609079326. It was assigned to this individual provider in the NPPES registry on June 8, 2007.

Where is Kathleen Ryan Loker located?

Kathleen Ryan Loker practices at 9000 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 337-7070.

What is Kathleen Ryan Loker's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Infectious Diseases, with taxonomy code 2080P0208X.

Is Kathleen Ryan Loker enrolled in Medicare?

Yes. Kathleen Ryan Loker is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Kathleen Ryan Loker's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Kathleen Ryan Loker reassigns Medicare benefits to 2 organizations: Children's Specialty Group, Inc. (Milwaukee, WI) and The Medical College Of Wisconsin, Inc. (Milwaukee, WI). Each 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 Ryan Loker's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

What insurance does Kathleen Ryan Loker accept?

Health plans from Anthem Blue Cross and Blue Shield, Aspirus Health Plan, CareSource (Common Ground Healthcare) and HealthPartners list Kathleen Ryan Loker 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 Ryan Loker was last updated on October 23, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.