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MARY CATHERINE ERNSTER MD
NPI 1407434517
Pediatrics in Madison, WI

Active since March 30, 2021PECOS Enrolled
752 N HIGH POINT RD, MADISON, WI 53717(608) 824-4997 Get Directions Write a Review

NPPES record last updated: December 18, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

Record update history: Dec 18, 2025, Aug 23, 2024, Jun 19, 2024 and 2 more (5 updates tracked since 2021).

About Mary Catherine Ernster Md NPPES

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

MARY CATHERINE ERNSTER MD (NPI 1407434517) is an individual pediatrics provider in Madison, Wisconsin, licensed in Wisconsin (85282-20) and active in the NPI registry since March 2021. She is enrolled in Medicare PECOS and is a graduate of University Of Arkansas College Of Medicine (2021).

NPPES Registry Identity

NPI1407434517
Entity TypeIndividualFemale
Primary Taxonomy208000000X
Provider Legal NameMARY CATHERINE ERNSTERCredential: MD
Location Address752 N HIGH POINT RDMadison, WI 53717-2236
Mailing Address752 N High Point RdMadison, WI 53717-2236 · (608) 824-4997
Phone(608) 824-4997
Sole ProprietorNo
Medical School CMSUniversity Of Arkansas College Of MedicineGraduated 2021
Enumeration DateMarch 30, 2021
Last NPPES UpdateDecember 18, 20255 updates tracked since enumeration
NPPES CertifiedDecember 18, 2025
✔ NPI 1407434517 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in WI · 85282-20
Definition
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.
752 N HIGH POINT RD, Madison, WI 53717
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Other Names 1

Former Name (1)Mary C Moore

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Mary Catherine Ernster Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID4789123191
PECOS Enrollment IDI20250829003334
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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 53717 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
$82.92 typical visit price
range $53.90 – $163.24
Typical copayment $20.73 (range $13.47 – $40.81)
Most-billed visit code 99203
Established Patient
$95.41 typical visit price
range $17.40 – $133.76
Typical copayment $23.85 (range $4.35 – $33.44)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

HEATHER L MUCKLER COTA
Occupational Therapy Assistant
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4821
DR. MINDY BAUER PHARMD
Pharmacist
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4500
DAVID K FALK MD
Dermatology
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4000
DAVID A SORBER MD
Internal Medicine
752 N HIGH POINT RD, DEAN MEDICAL CENTER
MADISON, WI 53717
Dane County (608) 824-4800
JULIA L. THORSEN M.D.
Allergy & Immunology
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4000
SARAH A OLIVER PA-C
Physician Assistant
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4000
DR. GRANT MACAULAY M.D.
Internal Medicine
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4000
DR. JUI B HAKER MD
Preventive Medicine (Occupational Medicine)
752 N HIGH POINT RD
MADISON, WI 53717
Dane County (608) 824-4000

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 Mary Ernster's NPI number?

The NPI number for Mary Ernster is 1407434517. It was assigned to this individual provider in the NPPES registry on March 30, 2021. The provider is also known as Mary C Moore.

Where is Mary Ernster located?

Mary Ernster practices at 752 N High Point Rd, Madison, WI 53717. The listed phone number is (608) 824-4997.

What is Mary Ernster's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Mary Ernster enrolled in Medicare?

Yes. Mary Ernster is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Mary Ernster was last updated on December 18, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.