Meet our Team
Mario Aragon, PA-C
Prior to becoming a Physician Assistant, Mario received his bachelor’s degree in university studies with minors in both Finnish and chemistry from Brigham Young University in Idaho. Following graduation, Mario spent two years working as a paramedic in Colorado Springs before attending the University of New Mexico School of Medicine and obtaining an additional bachelor’s degree in physician assistant studies. In 2010, he moved back to Colorado Springs and joined the Alliance team as a Physician Assistant. In addition to his various academic achievements and interests, Mario also spent time studying art while attending college, he enjoys drawing caricatures. He speaks intermediate Spanish and fluent Finnish. Mario believes that taking time to listen to patients is his best tool he can use to help identify and diagnose health issues to assist with healing. Outside of work, Mario also enjoys spending time and going on adventures with his wife and children. He loves going fly fishing any chance he gets.
Steve has a extensive background in Emergency and Pediatric Medicine. He graduated from Westminster College in Salt Lake City with a Bachelor of Science in Nursing. He worked at Primary Children's in Salt Lake City before moving to Colorado Springs in 2006. He worked in the Emergency department while completing a Master of Science in Nursing from the University of Colorado. Steve has practiced Full Scope Medicine with training beyond the Family Practice arena and well into the Urgent Care & Emergency Medicine fields. He is recognized for clinical leadership and well rounded in all walks of life. Steve’s personality and competence will put anyone at ease - whether you are visiting Alliance for a simple check up or urgent issue. Steve enjoys spending time with his family and exercising. He loves to travel and enjoys the beach. He served a mission in the Philippines and speaks Tagalog.
Christian Birky, PA-C
Jennica Cornine PA-C
Jennica is a physician assistant certified by the National Commission on Certification of Physician Assistants. She holds both a Bachelor of Sciences from the Medical College of Georgia (2007) and a Master of Physician Assistant Studies from the University of Nebraska Medical Center (2010). Prior to PA school, Jennica obtained her Bachelor of Arts in biology with a minor in studio art from Wesleyan College in Macon, Georgia. Jennica is a Wyoming native, military spouse, and mother of 2 amazing kids. As a military spouse, and prior to moving to Colorado in 2023, Jennica has had the incredible opportunity to practice medicine in the states of Georgia, Nebraska, Virginia, Florida, and overseas as a volunteer with the American Red Cross. She has practiced extensively in adult and pediatric emergency medicine with additional experience in pediatric weight management, general pediatrics, and pediatric urgent care. Jennica is excited to call Colorado Springs home and be part of the Alliance family. She loves to travel, read, draw, sew, and explore the great outdoors with her family through hiking and camping.
Madison Flicker PA-C
Madison is a graduate of University of Colorado Boulder where she earned her Bachelor’s degree in Evolutionary Biology & Ecology (Sko Buffs!). She then pursued her Master’s in Physician Assistant studies at the University of Charleston in wild and wonderful West Virginia. She received extensive training in rural medicine and is passionate about building trusting relationships between providers and patients through open communication and kindness. Madison was raised in Colorado Springs and loves fly fishing, hiking and camping. When she’s not outside you can find her cooking in the kitchen with her large Italian family, or reading her latest book club pick.
Mallory Guffey PA-C
Mallory is a graduate of Clemson University where she earned a bachelor’s degree in genetics. After graduation, she attended MCPHS University and obtained her master’s degree in Physician Assistant Studies. Mallory was born in Charlotte, NC and has worked at urgent cares in Virginia and New Jersey. She is a member of the American Academy of Physician Assistants. In her free time, Mallory hosts a monthly virtual book club, loves daily walks with her husband and dog, and cheering on the Clemson Tigers.
George Gustafson MD
Jeremy Jarecke DO
Dr. Jarecke graduated in the specialties of both Medicine and Pediatrics from Penn State Milton S. Hershey Medical Center, which is recognized as one of the leading teaching and research hospitals in the country (U.S. News and World Report’s 2012-13). Only candidates with strong academic record, exceptional interpersonal skills and a sincere desire to work with and for adults and children are accepted. He is a member of the American College of Physicians, American Academy of Pediatrics, and the American Osteopathic Association. Dr. Jarecke’s philosophy of excellence and compassion in the care of each individual patient are equally important objectives. During his time as a professional Dr. Jarecke has additionally had the privilege of working as a product specialist for Abbott Laboratories. Scientific knowledge, combined with the ability to listen to patients and communicate effectively is key to quality care. Outside of medicine Dr. Jarecke enjoys spending time with his wife and family.
Jeremy Johnson PA-C
Jeremy Johnson is a certified Physician Assistant. He prioritizes helping patients through preventative care and catching small problems before they become big ones. He enjoys getting to know his patients on a personal level and the dynamic mix of challenges the medical field offers. Jeremy graduated with a Bachelor’s degree in Biology from Berry College and went on to achieve a Masters in Physician Assistant Studies from Bethel University (Tennessee).When not working, Jeremy enjoys spending time with his family and friends, traveling, and exploring his interest in cars. Jeremy is a member of the American Academy of Physician Assistants and the Colorado Academy of Physician Assistants
Paras Longanecker, DO
Before pursuing a career in pediatrics, Dr. Longanecker received a Bachelor’s of Science in Neuroscience at the University of Texas at Dallas with a minor in Arts and Performance. She went on to attend medical school at the University of North Texas Health Science Center, followed by pediatric residency training at the University of Texas Health Science Center in San Antonio, Texas. After completing residency in 2013, Dr. Longanecker practiced as a pediatric hospitalist at Texas Tech before returning to outpatient pediatric medicine. She and her family moved to Colorado in 2019.
Sara Olson PA-C
Sara Olson is a physician assistant certified by the National Commission on Certification for Physician Assistants. Sara Olson graduated with a Bachelors degree in biology from the University of California, Santa Barbara in 2004 and then worked as a clinical research coordinator developing new medications in the area of gastroenterology before going on to PA school. She completed her physician assistant training at Harding University in Searcy, Arkansas and graduated with a Master of Science in Physician Assistant Studies in 2008. Sara grew up in San Diego, California and relocated to Colorado Springs to join the Alliance team in 2008. Sara's goal is to work as a team with her patients and fellow providers to help prevent disease and treat them with kindness when they become ill. She has a special interest in women's health. Sara enjoys spending time with her husband and two children and hopes to be part of the medical missions with the practice in the future.
Carol Reeder MD
Dr. Reeder is a physician certified by The American Board of Family Medicine. She graduated Magna cum Laude from the University of Colorado with a degree in Business. After 12 years of working in the software industry, she chose to pursue her passion for medicine. Dr. Reeder completed medical school at The Medical College of Wisconsin. She completed her residency at Swedish Medical Center, a Level I Trauma Center in Denver with an excellent community-based focus on full-spectrum family medicine. She enjoys providing compassionate care to the whole family by working together, in partnership with her patients, to achieve their best preventative care, acute care, and disease management. Additional experience includes medical humanitarian service in Quito, Ecuador and Manila, Philippines. Dr. Reeder enjoys spending time with family and friends, and participating in many outdoor activities.
Lindsey Suhr PA-C
Lindsey is a physician assistant certified by the national commission for certification physician assistants. She graduated with a bachelor's degree in biomedical sciences at Colorado State University, Fort Collins. After graduation Lindsey worked as a laboratory manager for embryonic research from 2011 - 2013. She completed her physician assistant training at University of St. Francis in Albuquerque, New Mexico and graduated with a Masters of Science in physician assistant study. Lindsey was born and raised in Colorado Springs, Colorado and joined the Alliance team in 2018. Lindsey was generally trained in all areas of medicine but enjoys urgent care and women's health. Outside of medicine, Lindsey stays busy with her family, reading and enjoying the outdoors.
Rebecca Wendt MD
Robin is a licensed clinical social worker. She has a bachelor's degree in social work from Colorado state University in Fort Collins and she received her master's degree in social work from Newman University. Robin has over 20 years of experience working with at risk children, adolescents, and families in a variety of settings including residential treatment facilities, acute psychiatric hospital setting, emergency departments, detention facilities and in the community through Department of human services. She has 10 years of direct clinical experience delivering healthcare to patients in psychiatric hospitalizations and working in the emergency room was with individuals who are in crisis or specially includes helping those struggling with anxiety, depression, PTSD and interpersonal issues.