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Katherine Diemer, MD - Freeport, IL - SSM Health logo

Katherine Diemer, MD - Freeport, IL - SSM Health

Family MedicineFreeport, IL

★★★★★4.7/5201 reviews across 3 platforms

Ratings by platform

  • Ratings.MD: 4.7 out of 5 (102)
  • SSM Health Official Site: 4.8 out of 5 (96)
  • WebMD Care: 2.5 out of 5 (3)
  • Healthgrades: 3.0 stars (2)

What patients say

Patients praise

  • Takes time to listen to concerns
  • Easy to understand explanations
  • Caring, empathetic, and compassionate demeanor
  • Knowledgeable physician
  • Personable and professional

Common complaints

  • Limited number of low ratings on some aggregate sites

In patients' words

"Katherine is a caring and empathetic person. She takes the time to listen to me and explain things."

Ratings.MD

"Very knowledgeable physician. Kind caring and compassionate."

Ratings.MD/SSM Health

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5].

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