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Mayo Clinic

Internal Medicine • Willmar, MN

About

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Clinic Type

Internal Medicine

Address

—

Phone

+14803018000

Email

giftplanning@mayo.edu

Opening Hours

Not published — contact the clinic to confirm hours.

Website

https://www.mayoclinic.org/departments-centers/general-internal-medicine/sections/overview/ovc-20461602

Services Offered

—

Insurance & Payment

—

Languages Spoken

—

Social Media

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Photos

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What Patients Say

Overall sentiment across review platforms: mixed

  • CentraCare - Willmar Clinic (Dr. Dexter Casta): 4.4/5 (214 ratings)
  • WebMD (Dr. Dexter Casta): 3.5/5 (10 ratings)
  • WebMD (Dr. Kendall Bos): 5.0/5 (6 ratings)
  • Vitals (Dr. Kendall Bos): 5.0/5 (5 ratings)
  • US News (Dr. David A. Newcomer): 5.0/5 (15 ratings)

Patients praise

  • Physicians described as knowledgeable and thorough
  • Clear communication and ability to explain conditions well
  • Compassionate and patient-centered care reported by many patients
  • Efficient processes for lab work and follow-ups

Common complaints

  • Patients reporting feeling rushed during appointments
  • Perception of some providers as impersonal or overly focused on computer/files
  • Concerns regarding medication management and frequency of follow-up visits

"Dr. Casta is very thorough and consistently demonstrates excellent diagnostic skills, professionalism and Genuine patient interest and care."

— CentraCare - Willmar Clinic Patient Review

"The provider is always in a hurry and is constantly on the computer. Very impersonal."

— WebMD Patient Review

"Dr. Bos is always excellent when it comes to discussing results and follow up plans."

— WebMD Patient Review

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

In the News

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

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