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Clinic Type

Medical Weight Loss

Address

331 W Surf St Ste 5100 Chicago, IL 60657

Phone

(773) 665-9840

Email

careers@ascension.org

Opening Hours

Monday: 9:00 am - 5:00 pm; Tuesday: 8:00 am - 1:00 pm; Wednesday: 9:00 am - 5:00 pm; Thursday: 9:00 am - 5:00 pm; Friday: 9:00 am - 5:00 pm; Saturday: Closed; Sunday: Closed

Services Offered

  • Weight-loss and bariatric surgery
  • Bariatric surgery
  • Medical weight loss
  • Center for Bariatrics & Weight Loss Chicago

Team

  • Ascension Illinois - Center for Bariatrics & Weight Loss Chicago — Center / Bariatric Surgery Department

Insurance & Payment

Visit-based payment, Insurance generally accepted (varies by plan)

Languages Spoken

  • English

FAQs

What services are offered?

Weight-loss and bariatric surgery, including center for bariatrics, medical weight loss, and bariatric surgery options.

If you are experiencing a life-threatening emergency, call 911 or go directly to the ER.

Disclaimer: This is general guidance; call emergency services in a life-threatening situation.

Photos

What Patients Say

Overall sentiment across review platforms: mixed

  • Suburban Surgical Care: 4.7/5 stars (76 reviews)
  • The Kane Center: 4.75/5 stars (291 reviews)
  • NorthShore University HealthSystem: 3.8/5 stars (52 reviews)
  • Bariatric Institute of Greater Chicago: 5.0/5 stars (33 reviews)
  • The Chicago Center for Bariatric Surgery: 4.8/5 stars (16 reviews)
  • Barix Clinics of IL: 5.0/5 stars (86 reviews)

Patients praise

  • Highly skilled and knowledgeable surgeons
  • Kind, helpful, and supportive office staff
  • Effective weight loss outcomes and patient satisfaction with surgical results
  • Thorough pre-operative testing and clear explanations of procedures
  • Comfortable, professional clinical environments

Common complaints

  • Concerns regarding post-operative service and follow-up care
  • Reports of inconsistent communication from office staff and coordinators
  • Occasional complaints about bedside manner being gruff or uninterested
  • Conflicts in pre- and post-operative instructions between staff members
  • Instances of perceived arrogance or lack of compassion from some providers

"I had absolutely no complications from the surgery and found my recovery to be much easier than I expected... having a highly skilled surgeon is the most important factor in having a successful procedure."

Patient of The Kane Center

"Great Dr. tiesenga, great hospital, and great nurses! Only 1 problem...what I can eat when I went home. Dr. Tiesenga said one thing and the dietary nurse said something different."

Patient of The Chicago Center for Bariatric Surgery

"This man is a great salesman, perhaps a good surgeon, but his bedside manner was not a good fit for me."

Patient of Bariatric Institute of Greater Chicago

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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