Gregory Alfred, MD, FAAEM, ABEM

Dr. Alfred is the medical director for HMS Florida. He is board certified in emergency medicine and is also certified in hyperbaric medicine. He is an active member of the American Academy of Emergency Medicine, the Undersea and Hyperbaric Medical Society, and Hyperbaric Medicine International. Having grown up in the US Virgin Islands, Dr. Alfred's interest in hyperbaric medicine derives from his passion for scuba diving. Dr. Alfred received his undergraduate degree from Princeton and his medical degree from NYU-Mount Sinai School of Medicine. He completed his emergency medicine training at USC, where he also obtained his certification in hyperbaric medicine. Dr. Alfred was named outstanding resident of the year during his final year of residency. Along with practicing emergency medicine, Dr. Alfred has served as a clinician in one of the busiest in-patient hyperbaric departments in South Florida at Mercy Hospital since 2008. Dr. Alfred saw firsthand the amazing life-changing and neuro-restorative powers of HBOT while at the hospital, and has sought to expand the reach of the modality to the outpatient setting. 

Martin Peter Sayers, MD, FUHM

Dr. Martin Peter Sayers is a dual-board certified Emergency Physician with a subspecialty in Undersea and Hyperbaric Medicine. Originally from Fort Lauderdale, Dr. Sayers’ interest in hyperbaric medicine and physiology arose from his experience with Scuba diving and freediving.

After completing medical school at The Ohio State University College of Medicine, Dr. Sayers completed Emergency Medicine residency at Jackson Memorial Hospital / University of Miami. From there, Dr. Sayers completed fellowship in Undersea and Hyperbaric Medicine at the Duke University F. G. Hall Center for Undersea Medicine and Environmental Physiology. While in fellowship, Dr. Sayers was involved with numerous dive medicine and environmental physiology research projects.

Dr. Sayers holds board certifications in both Emergency Medicine as well as Undersea and Hyperbaric Medicine, and practices clinical Emergency Medicine with Broward Health, as well as Hyperbaric Medicine at HCA Florida Mercy Hospital in Miami.

Kate Yeadaker, APRN, FNP-BC

Kate Yeadaker, a seasoned Holistic Nurse Practitioner with over two decades in nursing, holds the Advanced Practice Registered Nurse (APRN) designation for the past nine years. Her diverse experience spans trauma, obstetrics, surgery, pediatrics, integrative/regenerative medicine, hyperbaric medicine, and psychedelic medicine.

A 2014 Georgetown University graduate, Kate has expertise in pre-operative medicine, holistic mental health, psychedelic medicine, functional medicine, and hyperbaric oxygen therapy. Her extensive post-master's studies cover nutrition, biochemistry, genomics, and functional medicine.

Passionate about uncovering root causes of illness, Kate approaches each patient holistically. Certified in energy healing for twenty years, she is a Qi-Gong practitioner, Reiki Master, and certified in Integrative Somatic Trauma therapy, IFS, and Ketamine therapy.

For the past four years, Kate has focused on ketamine therapy, advocating for psychedelics as a bridge between eastern and western philosophies. She is dedicated to raising awareness and dispelling stigmas around psychedelic use, helping individuals access their "medicine within.