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Active NPI 1720402878 Individual Practitioner Female Practitioner

Kathryn Pellegrino Walker , PA

Physician Assistant • Saint Louis, MO

✓ Accepts Medicare Assignment Telehealth Available

Professional Overview & Biography Verified Profile Summary

Kathryn Walker, PA is a certified Physician Assistant practicing in Saint Louis, MO. With approximately 13 years of clinical experience since graduating from Emory University School Of Medicine in 2013, Kathryn Walker delivers high-quality medical care to the local community at 1 BARNES JEWISH HOSPITAL PLZ.

Kathryn Walker maintains professional affiliations with Medstar Medical Group Ii Llc, Suburban/Nrh Medical Rehabilitation Inc and accepts Medicare assignment . Telehealth and virtual consultation options are available for eligible patients.

Frequently performed procedures and clinical services include new patient outpatient office visit, prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service;, established patient outpatient office visit. Full Medicare procedure pricing transparency rates and service volume details are listed on this profile.

Practice Location & Contact Primary Location

Practice Address

1 Barnes Jewish Hospital Plz
Div Surg Urology

Saint Louis, MO 631101003

Telephone 3143628200
Fax 3144545244
Associated Practice Facility / Clinic
🏢 Midwest Lithotripsy, Llc Facility NPI 1831198639

Medicare Profile & Education

Medical School

Emory University School Of Medicine

Graduation Year

2013

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

Telehealth Services Available

Specialty Benchmarks & Practice Insights

Comparative analytics for Physician Assistant in Saint Louis, MO

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
13 Yrs +4.3 yrs vs City Avg
City Avg: 8.7 Yrs
State Avg: 10.3 Yrs
Regional Practice Density
501 Specialists

Practicing in Saint Louis, MO (1802 Statewide)

Telehealth Adoption Rate
12.6% Regional Adoption

✓ Offers Virtual Consultations

Medicare Pricing Discount
61.7% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Walker (13 Years) 13 Yrs
Saint Louis Specialty Average (8.7 Years) 8.7 Yrs

Performed Procedures & Service Volume

Top Medicare Part B procedures performed by this practitioner

CMS Official Data (2023)
Reporting Year:
HCPCS Code & Description Services Patients Submitted Charge Medicare Allowed
99204 New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more
14 14 $330.00 $126.34

Medical Specialties & State Licenses

CMS Verified: 2025-03-14
Physician Assistant Primary Specialty

NUCC Taxonomy Code: 363A00000X

State License MO 2026005783

A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.

Hospital & Practice Group Affiliations

Suburban/nrh Medical Rehabilitation Inc

6410 Rockledge Dr, Bethesda, MD 208171844

Suburban/nrh Medical Rehabilitation Inc

6410 Rockledge Dr, Bethesda, MD 208171844

Medstar Medical Group Ii Llc

1145 19th St Nw, Washington, DC 200363735

Phone: 2024292401

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

40 Associated Practitioners
NPI 1003347105

Doctor of Medicine (M.D.)

NPI 1023377736

Doctor of Medicine (M.D.)

Lauren Elson

Student in an Organized Health Care Education/Training Program

NPI 1073258687
NPI 1073491973

Doctor of Medicine (M.D.)

NPI 1073909768

Doctor of Medicine (M.D.)

Kathleen Lobello , ANP

Nurse Practitioner - Adult Health

NPI 1134147648

Adult Nurse Practitioner

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

13 Historical Events
📍
Updated Practice Location May 29, 2026

Registered at 1 BARNES JEWISH HOSPITAL PLZ, DIV SURG UROLOGY, SAINT LOUIS, MO 631101003 (Tel: 3143628200)

📍
Updated Business Mailing Address May 29, 2026

Registered at PO BOX 7412011, CHICAGO, IL 606742011 (Tel: 3143628200)

👤
Provider Name / Credentials Updated May 29, 2026

Recorded as KATHRYN WALKER, PA

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) May 29, 2026

Physician Assistant (License #2026005783 in MO)

📍
Updated Practice Location March 14, 2025

Registered at 102 IRVING ST NW, WASHINGTON, DC 200102921 (Tel: 2028771621)

📍
Updated Business Mailing Address March 14, 2025

Registered at 102 IRVING ST NW, WASHINGTON, DC 200102921 (Tel: 2028771621)

👤
Provider Name / Credentials Updated March 14, 2025

Recorded as KATHRYN WALKER

NPI Profile Active July 13, 2014

NPI status registered as active in NPPES database

📍
Updated Practice Location July 13, 2014

Registered at 80 JESSE HILL JR DR SE, ATLANTA, GA 303033031 (Tel: 4046164465)

📍
Updated Business Mailing Address July 13, 2014

Registered at 80 JESSE HILL JR DR SE, ATLANTA, GA 303033031 (Tel: 4046164466)

👤
Provider Name / Credentials Updated July 13, 2014

Recorded as KATHRYN PELLEGRINO

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 13, 2014

Physician Assistant

🟢
Initial NPI Registration & Enumeration February 10, 2014

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1720402878
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: February 10, 2014
Last Update: May 29, 2026
Sole Proprietor: No

Mailing Address

Po Box 7412011

Chicago, IL 606742011

Phone: 3143628200

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.