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Clinic Type

Colorectal Surgery

Address

Phone

(773) 227-5914

Email

careers@ascension.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

Team

  • Tim J Heilizer, Colon & Rectal Surgery — MD
  • Timothy Heilizer, Colorectal Surgeon — MD
  • Francisco A Quinteros, Colorectal Surgeon — MD
  • Therese G Kerwel, Colorectal Surgeon — MD
  • Theresa K Hayssen, Colorectal Surgeon — MD

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • Ascension Official Site (Dr. Therese Kerwel): 4.8/5 (259 reviews)
  • Ascension Official Site (Dr. Theresa Hayssen): 5/5 (210 reviews)
  • Healthgrades (Dr. Therese Kerwel): 4.2/5 (5 reviews)

Patients praise

  • Strong combination of medical competence and compassionate care
  • Excellent bedside manner
  • Reliable and highly recommended by patients
  • Extensive clinical experience

Common complaints

  • Occasional negative feedback regarding staff or patient communication during appointments

"I would recommend her to anyone who needs abdominal surgery... One of the best!! She saved my life."

Healthgrades Review for Dr. Therese Kerwel

"Patients consistently express high satisfaction with this provider, noting a strong combination of medical competence and compassionate care."

US News Health Review for Dr. Theresa Hayssen

Synthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].

Information sourced from the clinic's website as of July 11, 2026.

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Franklin, WI·Colorectal Surgery

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Franklin, WI·Colorectal Surgery

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