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Dr. John Brennan, MD


  • (262) 687-8312

Dr. Brennan's Overview

Dr. John Brennan graduated from the Rosalind Franklin University/ Chicago Medical School in 1991. He works in Racine, WI and 1 other location and specializes in Nephrology. Dr. Brennan is affiliated with Wheaton Franciscan Healthcare Franklin. He speaks English, German, Polish and Spanish.

Gender: Male

Languages Spoken: English, German, Polish, Spanish

Dr. Brennan's Experience

Years in Practice: 24

Conditions Treated by Dr. Brennan

Procedures Performed by Dr. Brennan

Dr. Brennan's Specialties


Dr. Brennan's Education & Training

Medical School: Rosalind Franklin University/ Chicago Medical School; Graduated 1991

Dr. Brennan's Accepted Insurance

  • Aetna Choice POS II
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • Anthem Blue Access PPO
  • Anthem Blue Preferred HMO
  • Anthem Blue Preferred Plus POS
  • BCBS Blue Card PPO
  • CIGNA Open Access
  • View More

Dr. Brennan's Office Information & Appointments

Office Locations

*This physician has multiple office locations. See Office Information for details.

Other Physicians in Dr. Brennan's Practice

Dr. Brennan's Hospital Affiliations

Office Locations