Skip to navigation Skip to Content
Join a world-class health system. Find Jobs
“I like to work as a team with my patients to help them live a long and healthy life.”​

Minocqua Center

9601 Townline Rd
Minocqua, WI 54548

Appointment Phone:

Provider Bio down arrow

Dr. J. Barbara Mroz began her medical practice with Marshfield Clinic Minocqua Center in 2001. As a specialist in internal medicine, Dr. Mroz diagnoses and treats a variety of acute and chronic medical conditions in adults in all stages of their lives. 

She has special interest in osteoporosis, women’s health, gastrointestinal problems and alternative medicine. She also is medical director for Minocqua Center’s Health Management Resources (HMR®) Weight Management Program, which supports weight loss through lifestyle changes and meal replacements.

Dr. Mroz is passionate about working together with patients to come up with a solution to their medical problems. “I am your partner - we work as a team to help you live a long and healthy life,”Dr. Mroz said. This statement echoes her collaborative approach to treatment.

A native of Cracow, Poland, Dr. Mroz completed medical school at Jagiellonian University Medical Academy in Cracow, Poland. She stayed in the city to finish her residency in internal medicine at Pope John Paul II Hospital, but then continued her residency training at
La Guardia Hospital/North Shore University in Forest Hills, New York.

Dr. Mroz holds a certification from the American Board of Internal Medicine, and is a member of the American College of Physicians and Wisconsin Medical Society. She is licensed to practice medicine in Wisconsin and New York.

When she’s not working, Dr. Mroz enjoys spending time with her husband and daughter. She also is a voracious reader. Her top picks include science fiction and detective books. In addition, Dr. Mroz enjoys travel and likes to keep up with the headlines in international politics.

Professional Summary down arrow

  • Medical School
    Jagiellonian University-Medical Academy Cracow, , Poland, M.D. 1985

    North Shore University - Forest Hills Hospital Forest Hills, NY, United States Internal Medicine 1993

    Pope John Paul II Hospital Cracow, , Poland Internal Medicine 1987

  • Professional Societies
    American College of Physicians Polish American Health Association

    Board Certifications
    Internal Medicine: 1993, recertified 2014

    State Licenses
    New York Wisconsin

    Make a patient referral

Patient Ratings down arrow

out of 5 (155 ratings)
Provider friendliness
Provider explanations of my problem
Provider concern for my questions
Provider's efforts to include me in treatment decisions
Provider's medication information
Provider's follow-up care instructions
Provider's use of words I understood
Provider's amount of time with me
My confidence in this provider
My likelihood of recommending this provider

Honor a Shining Star

Honor a provider or care team member who makes a difference in your care with a gift through the Shining Start program.