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Dr. Stephen J. Maassen, MD

Family Medicine

Dr. Maassen's Overview

Dr. Stephen J. Maassen graduated from the University of Michigan Medical School in 1983. He works in Oshkosh, WI and specializes in Family Medicine. Dr. Maassen is affiliated with Aurora Medical Center -Oshkosh, Aurora St Lukes Medical Center and Froedtert Lutheran Hospital.

Dr. Maassen's Experience

Years in Practice: 32

Dr. Maassen's Specialties

Family Medicine

Dr. Maassen's Education & Training

Medical School: University of Michigan Medical School; Graduated 1983

Dr. Maassen's Rating

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Dr. Maassen's Accepted Insurance

  • Aetna Choice POS II
  • Aetna Managed Choice POS Open Access
  • Aetna Signature Administrators PPO
  • Humana ChoiceCare Network PPO
  • UHC Choice Plus POS
  • UHC Navigate HMO
  • UHC Navigate POS
  • UHC Options PPO
  • View More

Dr. Maassen's Office Information & Appointments

Office Locations

Radiation Oncology Associates
Aurora Health Center

855 N Westhaven Dr
Oshkosh, WI 54904
(920) 303-8700


Office Hours and Information

Fax: (920) 303-4128

Practice Website:

Accepting New Patients: Yes

Medicare Accepted: Yes

Medicaid Accepted: Yes

Monday 7:00 AM - 8:00 PM
Tuesday 7:00 AM - 8:00 PM
Wednesday 7:00 AM - 8:00 PM
Thursday 7:00 AM - 8:00 PM
Friday 7:00 AM - 8:00 PM
Saturday 8:00 AM - 2:00 PM
Sunday 8:00 AM - 12:00 PM

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