Meet Our Physicians
William F. Morgan, M.D., is the founding owner of the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Allergy and Immunology and by the American Board of Pediatrics. Following his residency, Dr. Morgan completed a fellowship in Adolescent Medicine at the University of Colorado Medical Center and a fellowship in Allergy and Clinical Immunology at the National Jewish Center for Immunology and Respiratory Medicine. Dr. Morgan has been named one of the "Top Docs" in Phoenix Magazine for several years.
Ronald K. Jorgensen, M.D., is an owner-physician of the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Allergy and Immunology and by the American Board of Internal Medicine. After graduating from the University of Utah Medical School, he completed a residency in Internal Medicine at the University of Utah Medical Center. Following residency, he completed a fellowship in Allergy and Immunology at the Mayo Clinic in Rochester, Minnesota. He enjoys community service, skiing, and fishing.
Kevin M. Boesel, M.D., is an owner- physician of the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Allergy and Immunology and by the American Board of Pediatrics. After graduating from the University of Nevada School of Medicine, Dr. Boesel completed his Pediatric Residency training in St. Joseph's Hospital in Phoenix, Arizona. Following residency, he completed his fellowship in Allergy/Immunology at Creighton University Medical Center in Omaha, Nebraska.
Mark E. Rose, M.D., is a physician at the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Allergy and Immunology and by the Board of Internal Medicine. He obtained his B.S. and M.D. from the University of Utah. Subsequently, Dr. Rose spent six years at the Cleveland Clinic Foundation. He completed three years as an Internal Medicine resident, a fourth year as Chief Medical Resident and two years as an Allergy/Immunology/Asthma fellow. He is also a Fellow in the American Contact Dermatitis Society. Dr. Rose enjoys riding horses and playing sports with his wife and five children.
Ryan M. Casper, M.D., is a Physician at the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Pediatrics. After graduating from The Medical College of Wisconsin, Dr. Casper completed his Pediatric Residency training at Phoenix Children's Hospital in Phoenix, Arizona. Following his residency, he completed his fellowship in Allergy/Immunology at Children's Hospital of Wisconsin in Milwaukee, Wisconsin. His primary hobby is being a "sports nut"....he enjoys playing basketball, golf and tennis and he is a HUGE Packers and Badgers fan.
Levente E. Erdos, M.D., a physician at the Arizona Asthma and Allergy Institute. He is board certified by the American Board of Internal Medicine. He graduated from the University of Texas Health Science Center School of Medicine. Dr. Erdos completed his Internal Medicine Residency training at Northwestern University medical center in Chicago, Illinois. He continued on at Northwestern University to complete his fellowship in Allergy and Immunology. Dr. Erdos enjoys watching Cubs games at Wrigley Field, cooking his award winning chili, playing soccer and traveling.
Susan Symington, DFAAPA, MPAS, PA-C, has been a certified Physician Assistant since 1992 and is board certified by the National Commission on Certification of Physician Assistants. She graduated from Spring Arbor College in 1990 with a Bachelors of Arts in Biology and Chemistry (with honors in the degree of Chemistry). She then attended Western Michigan University.s Physician.s Assistants program and graduated with a Bachelor of Science in Medicine. After seven years of practicing in rural areas of Michigan in family practice she went back to school and obtained her Master.s of Physician Assistant Studies (MPAS) from the University of Nebraska. Susan was an Assistant Professor and full-time faculty member at Grand Valley State University in Grand Rapids, Michigan and also at Midwestern University in Glendale, Arizona where she taught in each of their PA programs. She continues to be a preceptor for Midwestern University PA students. She recently was recognized as a Distinguished Fellow of the American Academy of Physician Assistants (DFAAPA). She joined a select number of outstanding physician assistants who have distinguished themselves among their colleagues, as well as in their communities, by their service to the physician assistant profession, their commitment to advancing health care for all people and by their exemplary personal and professional development. Susan is also a current allied health member of the American College of Allergy Asthma and Immunology and the American Academy of Allergy Asthma & Immunology.
Susan has two children and two Labrador Retrievers. She enjoys spending time with her children, playing the piano, singing, playing volleyball, basketball, and golf and watching the University of Michigan football team.