
Mercy Heart and Vascular Institute
Cardiology • Mason City, IA • Since 1989
About
Mason City Clinic is a multispecialty medical practice based in Mason City, Iowa, established in 1989. It offers a range of services including cardiology (notably heart failure management), bariatric surgery, allergy, orthopedics, neurology, and psychiatry across offices in northern Iowa and southern Minnesota (4 U.S. offices, HQ at 250 S Crescent Dr, Mason City). The private partnership employs about 39 staff and generates roughly $1.1M in annual revenue. Contact: 800-622-1411 or 641-494-5403. Website: mcclinic.com.
Clinic Type
Cardiology (multi-location group)
Address
Mason City Clinic, 250 S. Crescent Drive, Mason City, IA 50401; Albert Lea location at 2440 Bridge Ave, Albert Lea, MN 56007
Phone
641.494.5300
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Opening Hours
Not published — contact the clinic to confirm hours.
Services Offered
Insurance & Payment
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Languages Spoken
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Social Media
Photos







What Patients Say
Overall sentiment across review platforms: positive
- Vitals (Dr. Byron T. Beasley): 4.8 out of 5 (22 ratings)
- WebMD (Dr. Samuel Congello): 5.0 out of 5 (56 ratings)
- Ratings.MD (Dr. Michael Fraizer): 4.9 out of 5 (136 ratings)
- WebMD (Dr. James Reeder): 5.0 out of 5 (24 ratings)
- Birdeye (Mason City Clinic overall): 4.8 out of 5 (1,132 reviews)
Patients praise
- Professional and knowledgeable cardiologists
- Doctors who listen to patient concerns and explain conditions clearly
- Compassionate care and bedside manner
- Confidence in medical expertise for managing complex heart conditions
- Helpful and friendly office staff in many instances
Common complaints
- Difficulty scheduling tests and follow-up appointments
- Long wait times in offices
- Feeling rushed during appointments
- Communication issues regarding procedures or medication explanations
- Confusion among staff or delays in internal communication
"Dr. Frazier genuinely listened to me gave me the care I needed. Made me feel like he really cared about me."
— Patient review of Dr. Michael Fraizer via Ratings.MD"However, attempting to schedule the tests he recommended has been very frustrating and thus far, not scheduled."
— Patient review of Dr. Michael Fraizer via Ratings.MD"My first experience with this doc, looking for help with 3rd stage heart failure. The doc spent 10 mins. Left room in a hurry. Waited for nurse. Referred to waiting room where ki waited for about 30 mins. Watched staff hurrying around, many seemed confused."
— Patient review of Dr. Christos Kassiotis via Ratings.MDSynthesized from public review platforms as of Jul 11, 2026 — sources: [1][2][3][4].
Information sourced from the clinic's website as of July 11, 2026.
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