Physicians
Christopher E. Adams, MD
Urology
Board-Certified: American Board of Urology
Residency: Urology, University of Iowa Hospitals and Clinics, Iowa City, IA
MD: Harvard Medical School, Boston, MA
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Abdi E. Ahari, MD
General Surgery
Board-Certified: American Board of Surgery
Fellow: American College of Surgeons
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Byron T. Beasley, MD
Cardiology
Dr. Byron T. Beasley is a board-certified physician with additional qualifications in Cardiovascular Disease and Geriatrics, practicing within the Mercy Heart Center of Mason City Clinic since 1979. He previously served as President of the Medical Staff and Director of Cardiovascular Services at Mercy Medical Center. Utilizing his extensive experience and advanced technical skills, Dr. Beasley also serves as a Clinical Assistant Professor at the University of Iowa Hospitals and Clinics.
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Samuel J. Congello, DO
Cardiovascular Disease
Board-Certified: Interventional Cardiology and Cardiovascular Disease, American Board of Internal Medicine
Fellow: American College of Cardiology, American College of Physicians, American College of Osteopathic Internists, Society for Cardiovascular Angiography and Interventions
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Sandra Leticia Reis Crosara, MD
Infectious Diseases
Fellowship: Infectious Diseases, University of Nebraska Medical Cernter, Omaha, NE
MD: Universidade Federal de Minas Gerais, Brazil
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Sepideh Darbandi, DO
Cardiology
Board-Certified: Internal Medicine, American Board of Internal Medicine
Residency:Internal Medicine, MercyOne North Iowa, Mason City, IA
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Michael del Rio, MD
Cardiac and Thoracic Surgery
Board Certified: American Board of Thoracic Surgery, American Board of SurgeryGeneral Surgery Residency: Maimonides Medical Center, Brooklyn, NY
Cardiac Surgery Fellowship: Medical College of Virginia
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Timothy M. Dettmer, MD
ENT Otolaryngology
Advanced Training: Allergy
Board-Certified: American Board of Otolaryngology
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Henry R. Diggelmann, MD
Otolaryngology
Board-Certified: American Board of Otolaryngology
Residency: Otolaryngology – Head and Neck Surgery, University of Iowa Hospitals and Clinics, Iowa City, IA
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Scott M. Donohoe, DPM
Podiatry
Dr. Scott M. Donohoe is a highly skilled and experienced podiatrist practicing at Mason City Clinic since 2005. He is certified by the American Board of Foot and Ankle Surgery.
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Rene M. Duregger, MD
Psychiatry
Board-Certified: American Board of Psychiatry and Neurology, Psychiatry American Board of Psychiatry and Neurology, Child and Adolescent Psychiatry
Residency: Psychiatry, University of Kansas School of Medicine, Wichita, KS Child Psychiatry, University of Iowa School of Medicine, Iowa City, IA
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Timothy A. Gibbons, MD
Orthopedic Surgery
Board-Certified: American Board of Orthopedic Surgery
Fellowship-Trained: Orthopedic Sports Medicine, University of Iowa, Iowa City, IA
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Gregory Grimberg, MD
Bariatric Surgery
Board Eligible: General Surgery, American Board of Surgery
Fellowship Trained: Bariatric Surgery Johns Hopkins University, Bayview Medical Center Baltimore, MD
Residency: Rutgers NJMS General Surgery Residency Newark, NJ
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Denisa L. Hagau, MD
Cardiovascular Disease
Board-Certified: Internal Medicine, Cardiovascular Disease, American Board of Internal Medicine, Echocardiography, Cardiovascular CT and Vascular Ultrasound
Residency: Internal Medicine, Memorial Hospital of Rhode Island, Pawtucket, RI
MD: University of Medicine and Pharmacy “Iuliu Hațieganu,” Romania
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Radu Hagau, MD
Cardiology
Board-Certified: Internal Medicine, Cardiovascular Disease, Echocardiography, Nuclear Cardiology, Vascular Ultrasound, Cardiovascular CT
Residency: Internal Medicine, Memorial Hospital of Rhode Island, Pawtucket, RI
MD: University of Medicine and Pharmacy “Iuliu Hațieganu,” Romania
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Daniel Hamilos, MD
Allergy and Immunology
Board-Certified: American Board of Internal Medicine, American Board of Allergy and Immunology
Residency: Duke University Medical Center, Durham, NC
MD: Northwestern University School of Medicine, Chicago, IL
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Edward S. Henrich, DPM
Podiatry
Board-Certified: American Board of Podiatric Surgery, American Board of Extremity Surgery
Fellow: American College of Foot and Ankle Surgeons
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Vishram Jalukar, MD
ENT Otolaryngology / Sleep Medicine
Fellowship-Trained: Otolaryngology – Head and Neck Surgery, University of Iowa, Department of Otolaryngology, Iowa City, IA
Residency: Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA
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Harsha U. Jayawardena, MD
General Surgery
Board-Certified: American Board of Surgery
Fellow: American College of Surgeons
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Darron M. Jones, MD
Orthopedic Surgery
Board-Certified: American Board of Orthopedic Surgery
Fellow: American Academy of Orthopedic Surgeons
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Ronald F. Kloc, MD
Interventional Pain Management
Board Certified: American Board of Anesthesiology with Special Qualification in Pain Management
Residency: Anesthesiology, Medical College of Ohio, Toledo OH
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Mark E. Lassise, MD
Psychiatry
Dr. Mark E. Lassise is board-certified in Psychiatry and Neurology, with additional qualifications in Addiction Medicine, and has treated patients at Mason City Clinic since 1997. With over 25 years of practice experience and extensive training, Dr. Lassise provides patients with state-of-the-art care for a wide range of conditions.
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Daniel J. Lee, MD
ENT Otolaryngology
Dr. Lee received his Medical Doctorate in May 2016 from the University of Iowa Carver College of Medicine in Iowa, and completed his residency in Otolaryngology at the University of Iowa – Hospital and Clinics.
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Phillip C. Lee, MD
Otolaryngology and Sleep Medicine
Board-Certified: Sleep Medicine, American Board of Otolaryngology
Residency: Otolaryngology, University of Iowa Hospitals and Clinics, Iowa City, IA
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Tyler M. Mulkey, DPM
Foot and Ankle Surgery
Dr. Mulkey received his Doctor of Podiatric Medicine in June of 2018 from Rosalind Franklin University in Chicago. He then went on to complete his residency at Christus St. Patrick Podiatric Medicine and Surgical Residency in Louisiana.
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Mihail Radulescu, MD
Board Certified: American Board of Orthopedic Surgery
Fellowship Trained: Adult Hip and Knee Reconstruction, William Beaumont Hospital, Royal Oak, MI
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Rogerio M. Ramos, MD
Psychiatry
Dr. Rogerio Ramos is a board-certified psychiatrist who has practiced in the mental health clinic at Mason City Clinic since 2009, as well as serving as Medical Director of Prairie Ridge Addiction Treatment Center and running a buprenorphine clinic for patients with addictions.
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Richard E. Rattay, MD
Orthopedic Surgery
Board-Certified: American Board of Orthopedic Surgery, Certificate of Added Qualification in Surgery of the Hand
Fellowship-Trained: Orthopedic Hand and Upper Extremity Surgery, University of Minnesota; Microvascular Surgery, Mayo Clinic, Rochester, MI
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Richard R. Rattin, DO
Cardiology
Board-Certified: Interventional Cardiology, Cardiology, Nuclear Cardiology, and Internal Medicine
Fellow: American College of Cardiology, Society for Cardiovascular Angiography & Intervention
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René F. Recinos, MD, PHD
Plastic, Hand and Reconstructive Surgery
Board-Certified: American Board of Plastic Surgery
Residency: Plastic Surgery, Medical College of Wisconsin, Milwaukee, WI
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Michael J. Sarik, DO
Cardiology
Fellow: American College of Cardiology
Fellowship-Trained: Cardiology, Thomas Jefferson University Hospital/Mercy Catholic Medical Center, Philadelphia, PA; Cardiac Electrophysiology, Deborah Heart and Lung Center, Browns Mills, NJ and Thomas Jefferson University Hospital, Philadelphia, PA
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Michael B. Scherb, MD
Orthopedic Surgery
Board-Certified: American Board of Orthopedic Surgery
Fellowship-Trained: Foot and Ankle Orthopedics, Union Memorial Hospital, Baltimore, MD
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Fayez Siddiqui, MD
Interventional Cardiology
Board-Certified: Internal Medicine and Nuclear CardiologyFellowship-Trained: Interventional Cardiology, University of Cincinnati Medical Center, Cardiovascular Diseases, Wayne State University, Detroit Medical Center
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Satish K. Sondhi, MD
Gastroenterology
Board-Certified: Gastroenterology and Internal Medicine, American Board of Internal Medicine
Fellowship-Trained: Gastroenterology, University of Kentucky Medical Center, Lexington, KY
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Michael Spooner, MD
Cardiology
Board-Certified: Internal Medicine, American Board of Internal Medicine;
Cardiovascular Diseases, American Board of Internal Medicine
Clinical Cardiac Electrophysiology, American Board of Internal Medicine
Steven P. Thoma, MD
Urology
Board Certified: American Board of Urology
Residency: Urology, Louisiana State University – HSC, Shreveport, LA
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Dr. Corey J. Thompson, MD
Psychiatry
Dr. Thompson received his undergraduate and graduate degrees from Western Michigan University in Kalamazoo, Michigan. He received his medical degree and completed his medical residency at University of Illinois at Chicago in Chicago, Illinois.
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Rajinder K. Verma, MD
Neurology Advanced Training: Sleep Medicine
Board-Certified: Neurology, American Board of Psychiatry and Neurology
Residency: Neurology, University of Kansas Medical Center, Kansas City, KS
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Cori N. Walker, MD
Otolaryngology
Board-Eligible: Otolaryngology, American Board of Otolaryngology
Residency: Otolaryngology–Head and Neck Surgery, University of Iowa Hospital and Clinics, Iowa City, IA
MD: University of Chicago Pritzker School of Medicine, Chicago, IL
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Kenneth Walsh, MD
Vascular Surgery
Board-Certified: Vascular Surgery, American Board of Surgery
Residency: New Jersey Medical School, Newark, NJ
MD: Temple University School of Medicine, Philadelphia, PA
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Ten years ago, my Mason City Clinic heart surgeon removed my expiration date
He’s the best doctor I’ve ever had – and I’ve had a lot
How do you handle kids if you can’t use your hands?
By replacing her arthritic hip and knee, Charlene can walk in the woods again without pain
Getting The Hip Replacement Surgery Done At 60 Was The Best Decision I Made
I trusted him 100 percent
Bunion pain stopped Melody in her tracks
I didn’t know the pain in my leg came from a ruptured blood vessel in my chest
No more sour grapes about knee pain for me
I Wanted To Dance Up A Storm At My Two Daughters Weddings, And I Did!
I Now Can Play Football And Basketball With My Grand Nephew.
I Was Given 23 Years Of My Life…And Counting
I feel great and have none of the heartburn I had for so many years and have lost 12 pounds.
I feel great. The surgery was easy. Now I can fully enjoy my life with my wife – we garden, bike and visit with our three grown children and three grand-daughters.
After Breaking Her Wrist In A Fall, Hampton Woman Gets Full Mobility of Her Hand And Wrist Back!
Dr. Scherb and his team are amazing
Dr. Mulholland Has A Great Team And They Know Exactly What They Are Doing
I would recommend Dr. Henrich to anyone.
Mason City Woman Back On Her Feet Again After Hammertoe Surgery
Charles City Woman Finds Relief From Sleep Apnea Symptoms and CPAP mask with New Procedure Called Inspire Therapy
Local man who struggled with the chronic symptoms of sleep apnea gets significant relief with new implantable device
Garner woman says her ‘Tummy Tuck’ not only gives her self confidence, it’s the motivator for staying healthy.
Local Woman Gets A Total Knee Replacement Enabling Her To Step Back Into The Joys Of Her Life!
Garner woman gets back to active life quicker after having a new & innovative bunion surgery, performed only at the Mason City Clinic.
Weight Loss Surgery Helped A Fort Dodge Man Lose 100 Pounds, Bring His High Blood Pressure To Normal, and Eliminate Knee Pain
Mother Of Four And Special Education Teacher Loses 100 Pounds Through Gastric Bypass Surgery, And Feels Happier Than Ever
New Aortic Valve Replacement Procedure Called TAVR Giving Patients Their Quality of Life Back
Clear Lake Man Treated Successfully For Atrial Fibrillation Credits Cardiologist Dr. Michael Spooner For Managing His Care So Well
Self-Detection Helped Mason City Woman Catch Her Breast Cancer Early Said Mason City Clinic Surgeon Caitlin Lund, DO, Was Compassionate & Kind
Harold Lewis – Jennifer McCambridge, PA; Samuel Congello, DO – Cardiology (Stents, Defibrillator)
Emmetsburg Man Had Ankle Replacement & Has Increased Mobility, Less Pain Credits Orthopedic Surgeon & Podiatrist At MercyOne North Iowa Specialty Care at Mason City Clinic For His Successful Surgeries
Three surgeries in a year has this Woden farmer back to his daily work and golf game. Credits orthopedic surgeon Dr. Michael Crane for helping him feel ‘fantastic’
George Mathews
Clear Lake Woman Finds Joy In Outdoor Activities Again. Pain Specialist at the Mason City Clinic Helped Relieve Her Hip Arthritis Pain, Without Surgery.
Fredericksburg Woman Gets High Quality Care Close To Home
Partial Knee Replacement Allows Iowa Woman To Live Without Pain
Klemme resident on road to recovery after ankle surgery 