Roger T. Liu, M.D., was born in Korea, graduated from the Korea University Medical College in 1971, and came to the United States in 1972. He completed a pulmonary diseases fellowship at Rutgers Medical School in New Brunswick, NJ, in 1978. His interests are clinical pulmonary diseases, pulmonary physiology and sleep disorders. He and his wife, Marian, live in West Des Moines. They have three children. He is board-certified in internal medicine, pulmonary disease and sleep medicine.

Daniel H. Gervich, M.D., is a native Iowan. He attended undergraduate school and medical school at the University of Iowa. Dr. Gervich received his postgraduate training at Los Angeles County University of Southern California Medical School in Los Angeles, University of Oregon Health Sciences Center in Portland, and University of Iowa Hospitals and Clinics in Iowa City. Dr. Gervich is certified by the American Board of Internal Medicine in the specialty of internal medicine and the subspecialties of infectious disease and critical care medicine. Dr. Gervich was trained and certified in hyperbaric medicine at Long Beach Memorial Hospital in California. Areas of particular interest to Dr. Gervich include infectious diseases in immunologically-compromised patients, including transplant patients and patients with acquired immunodeficiency syndrome (AIDS); hospital epidemiology, infection control, and device-related infections.

Steven G. Berry, M.D., was born and raised in St. Paul, MN, where he completed his secondary education. He received a bachelor of arts degree at Luther College in Decorah, IA, and his medical degree from the University of Minnesota in Minneapolis. Internal medicine training in Michigan and pulmonary fellowship training at the University of Iowa Hospitals in Iowa City led to private practice in Des Moines with Dr. Liu and Dr. Gervich. He has a special interest in asthma and pulmonary rehabilitation. Dr. Berry is board-certified in internal and pulmonary medicine. He is a fellow of American College of Physicians and American College of Chest Physicians. He and his wife, Linda, have four children.

Donald L. Burrows, M.D., was born in Chicago and moved to Des Moines in 1984. He attended the University of Michigan at Ann Arbor as an undergraduate and the University of Illinois in Chicago for his medical degree. He completed his Internal Medicine residency and his Pulmonary and Critical Care fellowship at the University of Illinois. Dr. Burrows spent the last year of his fellowship researching sleep apnea. He is board-certified in internal medicine, pulmonary, and sleep medicine. Dr. Burrows is medical director of the Mercy Sleep Center.

Michael C. Witte, D.O., was born in Muscatine. His wife, Linda, grew up in Oskaloosa, Iowa. He attended the University of Iowa in Iowa City as an undergraduate and the University of Osteopathic Medicine and Surgery in Des Moines, graduating in 1977. His internal medicine and pulmonary and critical care training was obtained at Fitzsimmons Army Medical Center in Denver, CO. He is board-certified in internal, pulmonary and critical care medicine. He joined CIC Associates after his Army duty was completed in 1987. His interests are critical care medicine and critical care telemedicine.

Daniel J Schroeder, M.D., was raised in North Dakota and received both his undergraduate and medical degrees from the University of North Dakota. He completed a residency in internal medicine at Gundersen Clinic/Lutheran Hospital in La Crosse, WI and a fellowship in infectious disease at Creighton University in Omaha, NE. Dr. Schroeder is board certified in internal medicine and infectious disease with special interests in infections in intensive care and travel medicine.

Ravi K. Vemuri, M.D., was born in India. He moved with his family to Wisconsin in 1969. He attended the University of Wisconsin in Madison for two years of undergraduate training. He attended Kurnool Medical College in India, graduating in 1985. He completed his one-year rotating internship at the Government General Hospital in Kurnool. He completed his internal medicine residency at Sinai Samaritan Medical Center in Milwaukee, where he served as chief resident. He completed his fellowship in infectious diseases at William Beaumont Hospital in Royal Oak, MI. He is interested in all aspects of clinical infectious diseases and has a special interest in the medical problems of travelers and difficult to heal wounds. Dr. Vemuri is board certified in internal medicine, infectious disease, hyperbaric medicine and is certified in wound care. He is medical director of the Mercy Wound Treatment Center and Hyperbaric Medicine Department. He and his family have been in Central Iowa for the past two decades.

Neil R. Horning, M.D., was born and raised in Bristol, TN. He received a bachelor of arts degree at the University of Tennessee, and his medical degree from Washington University School of Medicine in St. Louis, MO. His internal medicine, and pulmonary and critical care medicine training was obtained at Barnes Hospital and Washington University School of Medicine in St. Louis. At Washington University, he conducted research regarding the immunopathogenesis of asthma, and the optimization of immunosuppression of lung transplant recipients. Dr. Horning is board certified in internal medicine, pulmonary medicine, and critical care medicine. His interests include asthma, immunology, emphysema, and pulmonary hypertension. Dr. Horning and his wife, Susan, have one son.

Wendy L. Fluegel, M.D., born and raised in central Missouri, attended school at the University of Missouri, Kansas City. She subsequently received training in internal medicine, pulmonary, critical care and sleep medicine at the University of Minnesota in Minneapolis. She was chief resident in internal medicine. Dr. Fluegel was an associate professor at the University of Missouri, Kansas City, in conjunction with private practice from 1995 to 1998. Research interests include alternative treatment options for obstructive sleep apnea and asthma treatment and outcome. She continues to be interested in all aspects of sleep medicine and pulmonary disorders. She is board certified in internal medicine, pulmonary and sleep medicine with board eligibility in critical care medicine. Dr. Fluegel is married and has four children.

Maxwell S. Cosmic, M.D., was born in India. He received his medical degree from Trivandrum Medical College, India. He underwent further training in internal medicine in England and obtained MRCP (Member of Royal College of Physicians of UK) degree. He moved with his family to the United States in 1997. His internal medicine residency was at SUNY Buffalo, NY, where he served as chief resident. He subsequently completed his pulmonary and critical care medicine fellowship training at Medical College of Wisconsin, Milwaukee. During fellowship training, he did research on genetic link of venous thromboembolism. Dr. Cosmic is board certified in pulmonary, critical care and internal medicine. Areas of special interest include asthma, pulmonary embolism and critical care medicine. He and his wife, Jaflet, have two children.

Jason B. Wittmer, M.D., was born and raised in central Kansas. He completed undergraduate and medical education at the University of Kansas. He completed internal medicine residency and pulmonary/critical care fellowships at the University of Kansas Medical Center in Kansas City. Dr. Wittmer is board-certified in internal medicine, pulmonary disease, sleep medicine and critical care medicine. Areas of special interest include pulmonary hypertension, interstitial lung disease, interventional pulmonary procedures and critical care. He and his wife, Kathryn, have two sons.

Daniel J. Barth, DO, was born and raised in Iowa. He completed his medical degree at Des Moines University Osteopathic Medical Center. His internal medicine residency was completed through the University of Iowa – Des Moines at Iowa Methodist Medical Center. He completed his pulmonary and critical care medicine fellowship at the University of Nebraska Medical Center. He is board certified in internal medicine, critical care and pulmonary disease. Areas of special interest include COPD, interstitial lung disease and pulmonary hypertension.

Aneesa Afroze, MD, received her medical degree from University of Health Sciences, India. She completed her internal medicine residency and infectious diseases fellowship at University of Missouri Healthcare, Columbia, Missouri. Her special interest include antimicrobial resistance (AMR), transplant infectious diseases, wound care, and travel & tropical medicine. Dr. Afroze is board certified in internal medicine and in infectious diseases. She is also certified in Travel health and is a certfied wound care specialist.

Bradley E. Wilcox, DO was born in Storm Lake, IA. He received a BS from Iowa State University and obtained his DO from Des Moines University Osteopathic Medical Center. He completed his residency in Internal Medicine at the University of Nebraska Medical Center. He completed his fellowship in Pulmonary and Critical Care Medicine at Mayo Clinic Rochester. He is board certified in Internal Medicine and Pulmonary Medicine and board certified in Critical Care Medicine. Dr. Wilcox is married with three children and currently resides in Waukee.

Ziad Ismael, M.D., was born in Damascus, Syria. He obtained his MD from Damascus University School of Medicine in Syria. He completed Internal Medicine residency at Damascus University Hospitals in Syria along with Pulmonary and Critical Care training for one year. Then he joined The Internal Medicine Program as a resident at the University of Pittsburgh Medical Center Shadyside Hospital. He completed fellowship training in Pulmonary and Critical Care Medicine at the University of New Mexico in Albuquerque. He is board certified in Internal Medicine and Pulmonary Disease and board certified in Critical Care. Dr. Ismael is single and has no children and currently resides in Des Moines.

Sherif El-Mahdy, MD FRCPC was born in Trondheim, Norway. He obtained his medical degree from University of Alexandria in Egypt. He completed his Internal Medicine Residency training at Michigan State University where he was chief resident as well. He then completed Fellowship Training in Pulmonary and Critical Care at University of Iowa. He is board certified in Internal Medicine, Pulmonary and Critical Care Medicine. Dr El-Mahdy is married and resides in West Des Moines, Iowa.

Melisa A. Coaker, MA, MD was born and raised in the suburbs of Detroit, Michigan. She completed undergraduate and graduate training at Wayne State University in Detroit. She completed medical school at Meharry Medical College in Nashville, Tennessee, and finished her Internal Medicine residency and Sleep Medicine fellowship at Henry Ford Hospital in Detroit. Her special interests include sleep disordered breathing and shift work disorder, both of which were the basis for her fellowship research. She is board certified in Internal Medicine and Sleep Medicine. Melisa and her husband reside in Des Moines.

Mohamad Y. Abbas, M.D., was born in Lebanon. He attended undergraduate and medical school at the American University of Beirut. He completed his internal medicine residency at St Luke’s Roosevelt Hospital in New York City, and his infectious disease fellowship at Drexel University in Philadelphia, Pennsylvania. Dr. Abbas is board certified in internal medicine and infectious diseases. He is also certified in hyperbaric medicine. He lived and practiced in Alabama before moving to Iowa.

Bryon N. Johnson, D.O. was born and raised in Des Moines, IA. He received a bachelor of science degree at Iowa State University in Ames, IA and his medical degree from Des Moines University in Des Moines IA. He completed his internal medicine training at the University of Iowa Hospitals and Clinics. He completed his pulmonary and critical care fellowship at the University of Iowa Hospitals and Clinics as well. He has special interest in pulmonary oncology and management of critical illness. He is board certified in internal medicine and board eligible in pulmonary and critical care medicine. He and his wife, Soraya, have one daughter.

Kerry J. Canady, DO was born and raised in Cedar Rapids, IA. She received her undergraduate degree at Iowa State University in Ames, IA and her medical degree from Des Moines University in Des Moines, IA. She completed her internal medicine residency at Riverside Methodist Hospital in Columbus, OH. Her pulmonary and critical care training was completed at the University of Nebraska Medical Center. Dr. Canady is board certified in internal medicine and pulmonary medicine and board eligible in critical care medicine.

Dr. Angie Beckel, ARNP, FNP-C, is a native of Norwalk.  Angie is a Board Certified Family Nurse Practitioner.  She obtained her Bachelor, Masters, and Doctorate in Nursing from the University of Iowa.  Angie and her husband currently reside in Clive.

Nguyen-Ly Huynh, PA-C, was born in Nha Trang, Vietnam and moved to Iowa in 1995. She completed her undergraduate studies at the University of Iowa and attended the Long Island University at Brooklyn, NY for her Physician Assistant degree. She is currently certified by the National Commission on Certification of Physician Assistant. She is interested in all aspects of sleep medicine. She is married and resides in Urbandale.