1. Home
  2. Directory
  3. Wisconsin
  4. Milwaukee
  5. Pediatrics
  6. NPI Profile

DR. KATHRYN LYNN RITTER DO
NPI 1629717558
Pediatrics - Neonatal-Perinatal Medicine in Milwaukee, WI

Active since May 31, 2022PECOS Enrolled
9200 W WISCONSIN AVE, MILWAUKEE, WI 53226(414) 805-6600(414) 805-6622 Get Directions Write a Review

NPPES record last updated: November 4, 2025. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: Nov 4, 2025, Jun 20, 2025, Mar 28, 2025 (3 updates tracked since 2025).

About Dr. Kathryn Lynn Ritter Do NPPES

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

DR. KATHRYN LYNN RITTER DO (NPI 1629717558) is an individual neonatal-perinatal medicine provider in Milwaukee, Wisconsin, licensed in Wisconsin (81805-21) and active in the NPI registry since May 2022. She is enrolled in Medicare PECOS, maintains a secondary practice location in Milwaukee, and is a graduate of Des Moines University Of Osteopathic Medicine And Health Sciences (2022).

NPPES Registry Identity

NPI1629717558
Entity TypeIndividualFemale
Primary Taxonomy2080N0001X
Provider Legal NameDR. KATHRYN LYNN RITTERCredential: DO
Location Address9200 W WISCONSIN AVEMilwaukee, WI 53226-3522
Mailing Address9200 W Wisconsin AveMilwaukee, WI 53226-3522 · (414) 805-6600 · Fax (414) 805-6622
Phone(414) 805-6600
Fax(414) 805-6622
Sole ProprietorNo
Medical School CMSDes Moines University Of Osteopathic Medicine And Health SciencesGraduated 2022
Enumeration DateMay 31, 2022
Last NPPES UpdateNovember 4, 20253 updates tracked since enumeration
NPPES CertifiedNovember 4, 2025
✔ NPI 1629717558 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Neonatal-Perinatal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code2080N0001X
License✔ Licensed in WI · 81805-21
Definition
A pediatrician who is the principal care provider for sick newborn infants. Clinical expertise is used for direct patient care and for consulting with obstetrical colleagues to plan for the care of mothers who have high-risk pregnancies.
Also ListedPediatricsTaxonomy 208000000X · License R-12575 (IA)
9200 W WISCONSIN AVE, Milwaukee, WI 53226
Open in Google Maps ↗

Secondary Practice Location 1

Location 18701 Watertown Plank RdMilwaukee, WI 53226-3548 · Phone (414) 337-5499

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Kathryn Lynn Ritter Do is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID8426430737
PECOS Enrollment IDI20251103003693
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.

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.

TRACY BLAIR WANDTKE HERRMANN APNP, CNM
Advanced Practice Midwife
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-4777
DR. ZACHARY SMITH DO
Internal Medicine (Gastroenterology)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-6830
DR. COLLEEN ANN CROWE M.D., M.P.H.
Emergency Medicine
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6469
ROBERTO MEJIAS APNP
Nurse Practitioner (Pediatrics)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6600
MRS. ANNE E B LAKATOS APN-BC, APNP, RN
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE, DEPT OF INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
MRS. AMANDA M MANDERS APNP
Nurse Practitioner (Adult Health)
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-6850
KATHLEEN A WATERHOUSE-SKIBICKI CRNA
Nurse Anesthetist, Certified Registered
9200 W WISCONSIN AVE
MILWAUKEE, WI 53226
Milwaukee County (414) 805-5951
ANDREA L BEQUEST PA
Physician Assistant (Medical)
9200 W WISCONSIN AVE, INTERNAL MEDICINE
MILWAUKEE, WI 53226
Milwaukee County (414) 955-0350

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 Kathryn Ritter's NPI number?

The NPI number for Kathryn Ritter is 1629717558. It was assigned to this individual provider in the NPPES registry on May 31, 2022.

Where is Kathryn Ritter located?

Kathryn Ritter practices at 9200 W Wisconsin Ave, Milwaukee, WI 53226. The listed phone number is (414) 805-6600.

What is Kathryn Ritter's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Neonatal-Perinatal Medicine, with taxonomy code 2080N0001X.

Is Kathryn Ritter enrolled in Medicare?

Yes. Kathryn Ritter is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Kathryn Ritter was last updated on November 4, 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.