Mary Catherine Ernster, MD
Pediatrics Physician · Madison, WI
Mary Catherine Ernster, MD is a pediatrics physician with a practice address in Madison, Wisconsin, and NPI 1407434517, issued on Mar 30, 2021. Check the license (Wisconsin 85282-20, as entered in NPPES) on the Wisconsin Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mary Catherine Ernster
- Credential
- MD
- Primary taxonomy
- Pediatrics Physician 208000000X
- License number
- 85282-20 WI
Self-reported in NPPES; status is on the state search - Practice location
- 752 N High Point RD, Madison, WI 53717
- Phone
- (608) 824-4997
- Enumerated
- Mar 30, 2021
- Record last updated
- Dec 18, 2025
- Medicare enrollment
- Enrolled (PECOS I20250829003334); may accept Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 2021
- Entity
- Type 1 · individual
Also registered at 752 N High Point RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carleen Acker, PA-CPhysician Assistant1447514773
- Justin Amarnani, M.DFamily Medicine Physician1164866059
- Clifford Anderson, MDInternal Medicine Physician1487691788
- Sara Anderson-Kim, APNPNurse Practitioner1902057052
- Conrad Andringa, MDPediatrics Physician1528002581
- Timothy Baardseth, PH.D.Psychologist1104169218
Verify Mary Catherine Ernster in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWisconsin Medical Examining Board
Search for license 85282-20Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Pediatrics Physician providers in Wisconsin
There are 1,203 pediatrics physician records in Wisconsin. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
Other pediatrics physician records in Wisconsin
- Jose Abad Santos, M.D.Sussex, WI1144297730
- Sukaina AbbasMarshfield, WI1407529191
- Sheryn Abraham, M.D.Kenosha, WI1174527550
- Akm Abuhiya, MDFort Atkinson, WI1164043097
- Humaira Achakzai, MDBurlington, WI1275173270
- Krishna Acharya, MBBS, MPHMilwaukee, WI1194969303
- Gary Adamski, MDBeloit, WI1518977842
- Flavia Adashek, MDMilwaukee, WI1902555170
- Luke Addesso, MDMadison, WI1013470186
- Houda Afyouni, MDMilwaukee, WI1427888304
Common questions
What is Mary Catherine Ernster, MD's NPI number?
Mary Catherine Ernster, MD's National Provider Identifier (NPI) is 1407434517, issued on Mar 30, 2021. An NPI identifies a provider in billing; it is not a license.
Where is Mary Catherine Ernster, MD located?
The NPPES record lists a practice address at 752 N High Point RD, Madison, WI, 53717. Phone: (608) 824-4997. Providers update this record themselves, so call before visiting.
How can I verify Mary Catherine Ernster, MD's license?
NPPES lists Wisconsin license number 85282-20, as entered by the provider. Search the Wisconsin Medical Examining Board at https://dsps.wi.gov/Pages/BoardsCouncils/MEB/Default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.