Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1407434517 Individual Practitioner Female Practitioner

Dr. Mary Catherine Ernster , MD

Pediatrics • Madison, WI

Professional Overview & Biography Verified Profile Summary

Dr. Mary Ernster, MD is a certified Pediatrics practicing in Madison, WI. With approximately 5 years of clinical experience since graduating from University Of Arkansas College Of Medicine in 2021, Dr. Ernster delivers high-quality medical care to the local community at 752 N HIGH POINT RD.

Dr. Ernster does not directly accept Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

752 N High Point Rd

Madison, WI 537172236

Telephone 6088244997
Associated Practice Facility / Clinic
🏢 Dean Health Systems, Inc. Facility NPI 1558372441

Medicare Profile & Education

Medical School

University Of Arkansas College Of Medicine

Graduation Year

2021

Medicare Assignment

Not Specified

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Pediatrics in Madison, WI

Experienced Practitioner (5-10 Yrs)
Practitioner Clinical Experience
5 Yrs -14.8 yrs vs City Avg
City Avg: 19.8 Yrs
State Avg: 18.1 Yrs
Regional Practice Density
194 Specialists

Practicing in Madison, WI (1245 Statewide)

Telehealth Adoption Rate
0.0% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Ernster (5 Years) 5 Yrs
Madison Specialty Average (19.8 Years) 19.8 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-12-18
Pediatrics Primary Specialty

NUCC Taxonomy Code: 208000000X

State License WI 85282-20

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Practice Associates & Co-Workers

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

40 Associated Practitioners
Heather Muckler , COTA

Occupational Therapy Assistant

NPI 1003094467

Certified Occupational Therapy Assistant

NPI 1003104852

Doctor of Pharmacy (Pharm.D.)

NPI 1003868050

Doctor of Medicine (M.D.)

Dr. David Sorber , MD

Internal Medicine

NPI 1023057643

Doctor of Medicine (M.D.)

Dr. Julia Thorsen , MD

Allergy & Immunology

NPI 1023402153

Doctor of Medicine (M.D.)

Dr. Milton Johnson , MD

Emergency Medicine

NPI 1033153168

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

14 Historical Events
👤
Provider Name / Credentials Updated December 18, 2025

Recorded as MARY ERNSTER, MD

📍
Updated Practice Location August 20, 2025

Registered at 752 N HIGH POINT RD, MADISON, WI 537172236 (Tel: 6088244997)

📍
Updated Business Mailing Address August 20, 2025

Registered at 752 N HIGH POINT RD, MADISON, WI 537172236 (Tel: 6088244997)

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) August 20, 2025

Pediatrics (License #85282-20 in WI)

📍
Updated Business Mailing Address August 23, 2024

Registered at 29373 NETWORK PL, CHICAGO, IL 606731293 (Tel: 8473905900)

📍
Updated Practice Location June 19, 2024

Registered at 825 S MILWAUKEE AVE FL 2, LIBERTYVILLE, IL 600483218 (Tel: 8476808066)

👤
Provider Name / Credentials Updated June 19, 2024

Recorded as MARY MOORE, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) June 19, 2024

Pediatrics (License #125.077460 in IL)

NPI Profile Active April 03, 2021

NPI status registered as active in NPPES database

📍
Updated Practice Location April 03, 2021

Registered at 1675 DEMPSTER ST, PARK RIDGE, IL 60068 (Tel: 8473189300)

📍
Updated Business Mailing Address April 03, 2021

Registered at 1675 DEMPSTER ST, PARK RIDGE, IL 600681110

👤
Provider Name / Credentials Updated April 03, 2021

Recorded as MARY MOORE

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) April 03, 2021

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration March 30, 2021

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: 1407434517
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: March 30, 2021
Last Update: December 18, 2025
Sole Proprietor: No

Mailing Address

752 N High Point Rd

Madison, WI 537172236

Phone: 6088244997

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.