Mercy Heart and Vascular Institute
Cardiology • Oskaloosa, IA • Since 1989
About
Mason City Clinic is a multispecialty medical practice headquartered in Mason City, Iowa, offering cardiology services including heart failure care. The clinic operates four offices in the United States, with its main location at 250 S Crescent Dr, Mason City, IA 50401. Founded in 1989, it employs about 39 staff and provides a range of specialties (including bariatric surgery, orthopedics, allergy, neurology, and psychiatry). For cardiology/heart failure care in Mason City (and regionally in northern Iowa and southern Minnesota), the clinic is a primary option. Contact: 800-622-1411 or 641-494-5200. Website: mcclinic.com.
Clinic Type
Cardiology (multi-location group)
Address
250 S. Crescent Drive, Mason City, IA 50401
Phone
641.494.5300
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Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Technology & Equipment
Insurance & Payment
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Languages Spoken
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Social Media
Photos
What Patients Say
Overall sentiment across review platforms: mixed
- RateMDs (Dr. Samuel Congello): 5.0/5 stars (54 reviews)
- Healthgrades (Dr. Samuel Congello): 4.9/5 stars (50 ratings)
- Healthgrades (Dr. John Pargulski): 3.9/5 stars (7 ratings)
Patients praise
- Professional, thorough, and attentive care
- Clear explanations of conditions and treatment plans
- Compassionate and kind staff interactions
- Positive patient outcomes and life-saving interventions
Common complaints
- Rudeness from staff or providers
- Long wait times
- Poor communication regarding condition and treatment plans
- Difficulty scheduling appointments
"Dr. Congello spent all the time I needed. Very thorough. Had record so he could compare last test to recent tests. Explains well. Answerd all my questions. He is the best!! Genuinely cares for his patients."
— RateMDs"Doctor was the rudist person I have ever dealt with, wondered why I was there. He was also 30 minutes late. Do yourself a favor and find a different cardiologist."
— Healthgrades"They were all very professional, kind, and patient. They did an excellent job of explaining what was about to happen and of answering my questions. Excellent!!!"
— Mahaska Health testimonialSynthesized 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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