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Endocrinologists - Johnson County East - KCDocs

EndocrinologyOverland Park, KS

★★★★☆4.2/582 reviews across 5 platforms

Ratings by platform

  • Healthgrades (Dr. Jeffrey Kallsen): 3.7 out of 5 (30 ratings) (30 ratings (13 with written reviews))
  • Vitals (Dr. Jeffrey Kallsen): 3.9 out of 5 (26 ratings (11 written reviews))
  • Healthgrades (Dr. John Liu): 4.5 out of 5 (2 ratings (2 written reviews))
  • WebMD (Dr. James Casey): 5.0 out of 5 (24 ratings)
  • Vitals (Dr. James Casey): 4.6 out of 5 (Not explicitly stated total count)

What patients say

Patients praise

  • Strong clinical expertise and thoroughness mentioned by some patients
  • Positive experiences with communication and supportive bedside manner for select providers
  • Appreciation for clear explanations of lab results and treatment plans

Common complaints

  • Difficulty reaching office staff, non-responsive phone lines, and scheduling challenges
  • Concerns regarding bedside manner, perceived arrogance, or lack of empathy
  • Reports of inconsistent communication and sudden practice changes
  • Specific complaints about treatment approaches and medication management

In patients' words

"It is nearly impossible to get anyone in the office to answer a phone call or call you back. It is very frustrating that their office is closed at 3:20 on a Thursday afternoon."

Healthgrades review (Dr. Lisa Hays)

"His bedside manner is gentle, non-threatening, and caring. He is very mild mannered and puts no pressure on the patient or family."

Vitals review (Dr. James Casey)

"I strongly advise against appointments with Dr Jeffrey Kallsen."

Vitals review (Dr. Jeffrey Kallsen)

"He seems very arrogant and has a very condescending approach. He actually laughed at me when I asked a question."

RateMDs review (Dr. Yaser Mounla)

How these reviews were compiled

Synthesized from public patient-review platforms as of Jul 11, 2026 — sources: [1][2][3][4][5][6][7][8].

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