Isaac Melamed, M.D.
As a respected leader in the field of immunology, Dr. Melamed has dedicated the last decade in researching the connection between the immune system and the nervous system. With over 25 years of experience in clinical research, Dr. Melamed has served as a Principal Investigator on over 250 trials.
Click HERE to view Dr. Melamed’s Research CV
- Allergy & Asthma
Dr. O’Brien is a board-certified allergist with 25 years experience in the management of allergies, asthma, eczema, food allergies, sinusitis, and immune deficiencies. In the past he was medical director for the largest health education company in the United States and developed asthma programs for Kaiser Permanente, Anthem, Humana, and Prudential (the latter was the largest physician and patient education program ever developed in America). He also started the first patient education TV network in the United States (now in 27 cities). He sees both children and adults.
- Allergy & Asthma
Ronald Murray, M.D.
Dr. Murray is a well-known neurologist in the Western United States for his work in Multiple Sclerosis (MS). He has served as a Principal Investigator for approximately 15 MS clinical trials. Dr. Murray served as President and Medical Director for the Rocky Mountain MS Center, and currently acts as senior consulting neurologist. Dr. Murray is now Director of the MS Clinic of Colorado.
Alessandro Testori, M.D.
Dr. Alessandro Testori, a native of Italy, is Board certified in Internal Medicine. He completed his residency in Internal medicine at Mercy Hospital and Medical Center in Chicago, IL, followed by a fellowship in Immunotherapy at Northwestern University, Chicago, IL where he was involved in clinical research in stem cell therapy. He holds a Ph.D. in Molecular Biology from The Flinders University of South Australia, has over 25 years of research experience in molecular and cellular biology.
Angela McDonald, PA
Angela has practiced as a Physician Assistant since 2004 with IMMUNOe. She has worked in the clinic’s specialties of Allergy, Asthma, Immunology and Primary Care. She has several years working in clinical research and has served as a sub investigator in numerous clinical trials.
- Allergy & Asthma
Thomas Stewart, PA-C, JD
Mr. Stewart has been conducting clinical research for the past ten years at both IMMUNOe and the University of Colorado. He is a certified examiner for MS assessments. In addition to research, he practices at a community clinic, is the Director of Programs and Services for the Rocky Mountain MS Center, disability services advisor, and co-founder of the MS Complimentary and Alternative Medicine Project.
Jessica Gustafson, MS, PA-C, AE-C
Jessica grew up in small, rural community in southwest Iowa and received her undergraduate degree in Microbiology from the University of Iowa in 1998. Following graduation, Jessica moved to Colorado in 1999. She then spent time doing medical research at National Jewish Hospital—with a focus on asthma research as well as cancer research. Jessica also had the pleasure of working for a year at a pediatric non-profit association called Colorado Bright Beginnings. With her love of medicine and interest in pediatrics, Jessica attended the Child Health Associate/Physician Assistant Program at UCHSC. This school is unique among other Physician Assistant schools in that it is a three year program which has a strong emphasis in pediatrics. Jessica completed the program in 2006, and obtained a Master of Science degree in 2008.
Since that time, Jessica has spent 6 years working in the community as a physician assistant in pediatric & adult allergy and asthma where she has absolutely loved sharing her interest in allergy/asthma/immunology with families and their children. Jessica joined IMMUNOe Health Centers and Horizon Primary Care in April, 2013 and works at all three of our current sites: Green Valley Ranch, Centennial, and Thornton. Jessica loves our clinics’ special focus on immune health in relation to our patients’ general health. In June 2013, Jessica became a certified asthma educator. This certification ensures that the education given to our asthmatic families is the most up-to-date information available. Finally, Jessica is involved as a sub-investigator in our clinical research department—which has research trials in several cutting-edge allergy/asthma medications.
Jessica met her husband, Matt, at the University of Iowa. They moved to Colorado together in 1999 and married in 2002. Jessica and Matt have 2 very energetic children – Andrew and Grace—and spend their weekends enjoying the Colorado outdoors, traveling with family, and, during football season they cheer on the Iowa Hawkeyes!
- Allergy & Asthma
Tony Oakes, PA-C
Tony Oakes earned his Physician Assistant certification in 1998 at the University of Colorado Health Sciences Center. He received his Bachelor’s degree in Kinesiology from the University of Colorado at Boulder.
Prior to his work at Horizon pediatrics, Tony was a physician assistant for eight years at Child First Pediatrics, where he provided extensive healthcare to children. He also practiced family medicine at the Inner City Health Center for two years as well as pediatrics at Aspen Family Care for 5 years in Highlands Ranch. Tony enjoys all aspects of pediatrics, particularly adolescent and behavioral medicine.
Tony is actively involved at his church, where he also volunteers regularly. He enjoys and competes regularly in trail ultramarathons.
Tony resides in Castle Rock where he passionately loves his two children, Benjamin and Gracie.