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Mercy Gastroenterology - Mercy Hospital

GastroenterologySaint Louis, MO

★★★★★4.6/5198 reviews across 6 platforms

Ratings by platform

  • Mercy post-care survey: 4.8/5 (based on 106 responses) (106)
  • WebMD Care (Dr. Parul Gor): 3.0/5 (10)
  • Vitals (Dr. Paul Buse): 4.4/5 (7 reviews)
  • WebMD Care (Dr. Paul Buse): 5.0/5 (17 ratings / 1 review)
  • WebMD Care (Dr. Laura Ulmer): 5.0/5 (2 reviews)
  • Birdeye (Mercy Gastroenterology - Lake Saint Louis): 4.5/5 (56 reviews)

What patients say

Patients praise

  • Individual providers often receive high praise for bedside manner and competence
  • Successful outcomes in critical or urgent procedures
  • Some patients appreciate providers who listen and explain conditions clearly

Common complaints

  • Difficulty scheduling appointments and long wait times for procedures
  • Unresponsive office staff and communication issues (e.g., failure to return calls)
  • Unprofessional behavior by office staff or feeling dismissed by providers
  • Lack of clear explanations or personalized attention during visits
  • Disputes over appointment cancellations and rescheduling policies

In patients' words

"Although Dr. Buse has a warm and caring manner and seems to be very competent at his job, making an appointment with him and actually to see him at the appointed time is a challenge."

Vitals patient review for Dr. Paul Buse

"I came to Mercy with a major GI bleed and almost died but Dr. Ulmer was able to stop the bleeds and save my life."

WebMD patient review for Dr. Laura Ulmer

"Absolutely awful. Good luck trying to make an appointment. They hardly ever pick up the phone, and when they do, they make it as difficult as possible."

LocalityBiz patient review for Mercy Clinic Gastroenterology

"It was obvious she didn't want to help and told me that's their office rule so I need to find somewhere else to go. I can't believe the way I was dismissed and talked down to."

WebMD patient review for Dr. Parul Gor

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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