Learn more about our different research programs by visiting www.IMMUNOeResearch.com!

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Isaac Melamed, MD

A respected leader in immunology and immune-related disease, Dr. Isaac Melamed has focused on clinical practice and research for over 25 years. Dr. Melamed has published more than 100 papers and presented and lectured in national and international settings. His major concentration is primary and secondary immune deficiency, immune-related disease and the crosstalk between the immune system and the central nervous system. His mission is early intervention to ensure his patients optimal health.

Click HERE to view Dr. Melamed’s CV

Dr. Melamed see’s patients at our Centennial, Thornton and Longmont Clinics.

Kevin O’Brien, MD

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.

Dr. O’Brien see’s patients at our Centennial and Thornton Clinics.

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.

Angela McDonald see’s patients at our Thornton and Longmont Clinics.


Edan Sarid, MD

Dr. Sarid is a dedicated physician specializing in the practice of adult and pediatric allergy, asthma and immunology. His particular interest is in managing complex immunologic and allergic diseases through the identification and modification of defects in the immune system that cause inflammation. Dr. Sarid began his career in New York as a pediatric hospitalist and urgent care physician and then pursued his life-long interest in allergy, asthma and immunology by completing a subspecialty fellowship at the State University of New York Downstate Medical Center in Brooklyn. There he completed multiple research projects on the long term effects of chronic treatments in immune diseases. After moving to Colorado and joining IMMUNOe Health Centers, Dr. Sarid is utilizing his background in pediatrics and global medicine to provide devoted and passionate care for his patients and for cutting-edge clinical research. Outside of medicine, Dr. Sarid finds leisure in composing and performing his music on the piano as well as discovering Colorado’s beautiful outdoors with his family.

Dr. Sarid see’s patients at our Centennial, Green Valley Ranch, Smoky Hill and Thornton Clinics.

Jessica Gustafson, MS, PA-C, AE-C

Jessica received her undergraduate degree in Microbiology from the University of Iowa in 1998. After doing some medical research at National Jewish Health Center, she attended the Child Health Associate/Physician Program and UCHSC. She completed this program in 2006, and obtained her Master of Science degree in 2008.

Since then she’s spent 10 years working in the community as a Physician Assistant in Pediatric & Adult Allergy and Asthma. She joined the team at IMMUNOe Health Centers and Horizon Pediatrics & Primary Care in April, 2013, the same year she became a certified asthma educator. This certification ensures that the education given to our asthmatic families is the most up-to-date information available.

She currently works at our new Smoky Hill Allergy & Asthma clinic. In Jessica’s spare time, she enjoys spending time with her family, enjoying the Colorado outdoors, and traveling.


Jill Schofield, MD

Dr. Schofield graduated from the University of Colorado School of Medicine with Honors in 1995 and went on to complete her medical residency on the Osler Medical Service at the Johns Hopkins Hospital in Baltimore, MD.  She worked for many years as a hospitalist and teaching attending at St. Joseph Hospital in Denver.

In 2014, Dr. Schofield described the association of autonomic disorders in the antiphospholipid syndrome with Professor Graham Hughes in London who first described the antiphospholipid/Hughes syndrome.  She went on to design a two-year fellowship for multi-disciplinary training in autoimmune diseases at the University of Colorado and became the first person in world to complete this training.  

Dr. Schofield’s focus is now on the antiphospholipid syndrome and the emerging field of autoimmune dysautonomia.  She is interested in all forms of dysautonomia and has developed considerable expertise and interest in searching for the underlying cause in patients who fail to improve with conservative therapies. She has a clinical appointment at the University of Colorado and is an invited member of the inaugural international medical advisory board of the Graham Hughes International Charity (GHIC) to improve patient and provider education about the antiphospholipid syndrome.

Dr. Schofield sees patients at our Centennial office exclusively at this time.

Alex Thompson

Alexandria Thompson, FNP-BC

“Alex” Thompson is an AANP board certified Family Nurse Practitioner. After graduating with her Bachelor of Science in Nursing from the University of Oklahoma in 2011, she began a passionate career working with children in an intensive care setting. After deciding to become a bigger part of preventive medicine and research, she continued her education and graduated with a Masters in Science of Nursing from Frontier Nursing University in January 2017. Alex loves advocating for her patients while focusing on their family unit as a whole. Alex has lived in Colorado for 5 years and enjoys camping trips, taking art classes, and practicing yoga.


dr-murray-3Ronald Murray, MD

Dr. Murray is a Neurologist specializing exclusively in multiple sclerosis. He received his medical degree from the University of Colorado, and was an Intern and Neurology resident at the University of Utah School of Medicine. Prior to joining the faculty at the University of Colorado School of Medicine he completed a fellowship in neurovirology and experimental pathology at the University of Utah and Veterans Administration Medical Center. Dr. Murray has been involved in the field of MS as a researcher, educator, and clinician for nearly 30 years. Dr. Murray has published articles in the fields of neurology and MS and conducted numerous clinical and basic science research projects in MS.  Current research is focused on remyelination, new MS therapies and neuroprotection. Prior to starting the Multiple Sclerosis Clinic of Colorado in 2003 he was the President and Medical Director of the Rocky Mountain MS Center (RMMSC). In addition, from  2009  to 2015 he directed an outreach MS clinic in Billings, MT.Dr. Murray is a well-known neurologist in the Western United States for his work in Multiple Sclerosis (MS). He has serves as a Principal Investigator for many of our MS and Alzheimer’s Disease clinical trial studies.

Dr. Murray see’s patients at our Centennial Clinic exclusively at this time.

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 both MS and Alzheimer’s Disease 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.


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Edward J. Hepworth, MD

Dr. Hepworth is a Denver Native and a nationally-recognized contributor to the science and clinical practice of endoscopic sinus and skull base surgery.  He believes strongly in a patient-centered approach to sinus care and in the concepts of integrative and team-oriented medicine. Dr. Hepworth strives to engage each patient in a clear understanding of their disease with teaching and open communication.  He is currently working on the development of groundbreaking medical devices to promote minimally invasive treatments in the areas of sinus disease and skull base disorders. Dr. Hepworth’s innovative surgical and non-surgical approach to treatments has earned him global recognition with the world’s eminent leaders in the field.

Curriculum Vitae

Dr. Hepworth see’s patients at our Smoky Hill Clinic exclusively at this time.

FullSizeRenderAlison Love, NP

Alison Love is a board certified family nurse practitioner who loves patient care and education. She began her career as a surgical nurse and is a surgical first assistant.  The most rewarding part of her career is helping patients recover from surgery, overcome acute and chronic illness, and seeing their quality of life improve.  When she is not working with patients, Alison enjoys being outdoors and embracing Colorado’s beautiful scenery.

Alison Love see’s patients at our Smoky Hill Clinic exclusively at this time.

Jordan Fisher PA

Jordan Fisher, PA-C

After finishing his undergraduate degree at the University of Colorado, Jordan began his career in medicine working as a medical assistant for Dr. Hepworth and a number of other ENT physicians.  From there he attended the University of New England where he earned his Master of Physician Assistant Studies.  Upon completion he reunited with Dr. Hepworth to continue in the ENT subspecialty.  As a medical assistant Jordan spent every patient encounter educating patients on their diagnosis and treatment.  He continues this as a provider with the belief that the provider and patient are a team with the same goal of improving health, and this can only be done if both members have a clear understanding of the disease process.  In his spare timeJordan is found mountain biking, rock climbing, or snowboarding as he enjoys his return to Colorado.