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Clinic Type

General Surgery

Address

122 4th Avenue, Grinnell, IA 50112

Phone

5152418199

Email

UPH_CentralIAPrivacyOfficer@unitypoint.org

Opening Hours

Not published — contact the clinic to confirm hours.

Services Offered

  • General Surgery
  • Breast Surgery
  • Bariatric Medicine
  • Bariatric Surgery
  • Weight Loss Surgery

Team

  • Anna Mensing, MD, MD, Breast Surgery — General Surgeon
  • Jarrod Phelps, PA-C — Physician Assistant
  • Mahmoud Tayash, MD, FASMBS, MD, FASMBS — General Surgeon / Bariatric Surgeon
  • Phillip Bilderback, MD — General Surgeon

Insurance & Payment

Languages Spoken

Photos

What Patients Say

Overall sentiment across review platforms: positive

  • U.S. News & World Report (Dr. Mathew W. Severidt): 5/5 stars (9 reviews) (9 reviews)
  • WebMD (Dr. David Dwight Coster): 4.5/5 stars (18 ratings) (18 ratings)
  • Vitals (Dr. Phillip Bilderback): 5.0/5 stars (1 review) (1 review)
  • UnityPoint Health-Grinnell Regional Medical Center overall hospital recommendation rates: 75% to 91% (varies by source) (N/A)

Patients praise

  • Patients frequently report that surgeons are thorough and detailed
  • Surgeons are noted for explaining conditions and treatments clearly in layman's terms
  • High levels of satisfaction with communication, responsiveness, and patient comfort during surgical care

Common complaints

  • Reports of high hospital infection rates
  • Occasional negative patient experiences with specific hospital staff or departments (e.g., ER)

"I am very pleased with Dr. Sievert. He is very through & detailed in all situations. I was so happy I found him. I had surgery January 20, 2020 & am happy with the outcome."

WebMD Patient Review

"Dr Builderback was excellent!!! His nurse made me feel welcome and comfortable. Dr. Explained what he was doing. Appreciated his way of helping me feel comfortable."

WebMD Patient Review

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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