Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1679537294 Individual Practitioner Female Practitioner

Mary Jo Willis , NP

Nurse Practitioner • Madison, WI

Professional Overview & Biography Verified Profile Summary

Mary Jo Willis, NP is a registered healthcare professional specializing in Nurse Practitioner in Madison, WI. Practice services are available at 2880 UNIVERSITY AVE under active NPI credentials.

Practice Location & Contact Primary Location

Practice Address

2880 University Ave

Madison, WI 53705

Telephone 6082637500
Fax 6088336932
Associated Practice Facility / Clinic

Specialty Benchmarks & Practice Insights

Comparative analytics for Nurse Practitioner in Madison, WI

Active Practitioner
Practitioner Clinical Experience
Active
City Avg: 10.2 Yrs
State Avg: 12.1 Yrs
Regional Practice Density
519 Specialists

Practicing in Madison, WI (4030 Statewide)

Telehealth Adoption Rate
32.6% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Medical Specialties & State Licenses

Nurse Practitioner Primary Specialty

NUCC Taxonomy Code: 363L00000X

State License WI 43266

(1) A registered nurse provider with a graduate degree in nursing prepared for advanced practice involving independent and interdependent decision making and direct accountability for clinical judgment across the health care continuum or in a certified specialty. (2) A registered nurse who has completed additional training beyond basic nursing education and who provides primary health care services in accordance with state nurse practice laws or statutes. Tasks performed by nurse practitioners vary with practice requirements mandated by geographic, political, economic, and social factors. Nurse practitioner specialists include, but are not limited to, family nurse practitioners, gerontological nurse practitioners, pediatric nurse practitioners, obstetric-gynecologic nurse practitioners, and school nurse practitioners.

Additional State Medicaid & Healthcare Payer Identifiers

Medicaid State Provider ID
43829500 (WI)

Practice Associates & Co-Workers

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

40 Associated Practitioners
Jill Castillo , LCSW CADCIII

Counselor - Addiction (Substance Use Disorder)

NPI 1003876046

LCSWCADCIII

NPI 1023084282

Doctor of Philosophy (Ph.D.)

Dr. Holly Schaefer , MD

Psychiatry & Neurology - Hospice and Palliative Medicine

NPI 1083680243

Doctor of Medicine (M.D.)

NPI 1093825390

Doctor of Medicine (M.D.)

Dr. Kristin Berg , MD

Internal Medicine

NPI 1104050889

Doctor of Medicine (M.D.)

NPI 1104881259

Doctor of Medicine (M.D.)

Career & Practice History Timeline

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

6 Historical Events
NPI Profile Active July 08, 2007

NPI status registered as active in NPPES database

📍
Updated Practice Location July 08, 2007

Registered at 2880 UNIVERSITY AVE, MADISON, WI 53705 (Tel: 6082637500)

📍
Updated Business Mailing Address July 08, 2007

Registered at 8007 EXCELSIOR DRIVE, MADISON, WI 53717 (Tel: 6088295201)

👤
Provider Name / Credentials Updated July 08, 2007

Recorded as MARY JO WILLIS, NP

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) July 08, 2007

Nurse Practitioner (License #43266 in WI)

🟢
Initial NPI Registration & Enumeration April 12, 2006

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: 1679537294
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: April 12, 2006
Last Update: July 13, 2026
Sole Proprietor: No

Mailing Address

8007 Excelsior Drive

Madison, WI 53717

Phone: 6088295201

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.