Meet Our Team

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Meet your premier age management specialist physicians

Julie McCallen, M.D.

President of Cenegenics Denver
Dr. Julie McCallen is the President of Cenegenics Denver. She is board-certified in Family Medicine, a member of the Endocrine Society, the International Hormone Society, American Academy of Family Physicians, and the Age Management Medicine Group.

Phil Schechter, M.D.

Center Physician
Phil graduated from Johns Hopkins School of Medicine in 1975. He is a trained critical care and general surgeon who was the Director of Trauma Services at Swedish Hospital and in general surgical private practice though the nineties. At age 50, he completed a residency in Adult Psychiatry and has practiced psychiatry for over ten years.

Tim Watt, M.D.

Center Physician

Tim J Watt, MD, FAANS, and FAAAAM is certified by the American Board of Neurological Surgery and The American Board of Anti-Aging Medicine. He has completed the Advanced Fellowship in Anti-Aging, Functional, and Regenerative Medicine of The American Academy of Anti-Aging Medicine. Dr. Watt is a co author of the written board exam in Anti-Aging Medicine and was a medical editor and contributing author to The Physicians Guide to Anti-Aging Medicine and The Encyclopedia of Clinical Anti-Aging Medicine. Dr. Watt attended Wichita State University and the University of Kansas School of Medicine.

Dr. Watt is currently doing The Fellowship in Age Management Medicine working at Cenegenics Denver. He still practices Neurosurgery full time in Rapid City, South Dakota, where he is part owner in a Surgical Specialty Hospital.

Rod McCallen

Certified Personal Trainer

Rod is an ACSM certified personal trainer. As a master merchant seaman, Rod has always attended carefully to his level of fitness. He joined Dr. McCallen at Cenegenics in 2008 and has been instrumental in the growth and development of Cenegenics Denver.

Jared Sparr

Certified Personal Trainer

Jared earned his BA in Adult Fitness and Exercise Science from Metro State University, with a minor in nutrition. As an NSCA-certified master level strength and conditioning specialist for the past eight years, Jared has a deep passion for helping people achieve their health and strength goals. He has trained many professional athletes, from skiers and football players to hockey and baseball players, along with many collegiate athletes.

Jackie Twigg

Patient Service Coordinator

Jackie is our Patient Service Coordinator at the Denver office. She assists with patient inquiries, maintains day-to-day operations at the office, schedules patient visits and consults, and processes prescription fulfillment and lab requisitions. Jackie is originally from Pennsylvania and has lived in Colorado for eight years. As she grew up, she took an interest in the medical field from watching her mother as a nurse. Her interest in patient care is what inspired her to seek a job with Cenegenics Denver.

She currently lives in downtown Denver. She enjoys working out, spending time with family and friends, crafting, sporting events, and traveling.