- Current GI-MAP Turnaround Time: 7–10 Business Days


Tony Hoffman

President & CEO

Tony Hoffman started his career in the integrative laboratory industry over 25 years ago, first as a laboratory technician in microbiology, then moving into technical support, sales, and finally business development.

Tony was at the forefront of the planning, management, and launch of four successful stool analysis laboratories, with ownership in two of them, prior to founding Diagnostic Solutions Laboratory. His experience spans every... More


Chief Medical Officer

Dr. David M. Brady has 27-years of experience as an integrative medicine practitioner and over 23 years in health sciences academia. He is a licensed naturopathic medical physician in Connecticut and Vermont, is board certified in functional medicine and clinical nutrition, a fellow of the American College of Nutrition, and completed his initial clinical training as a doctor of chiropractic. He currently serves as the Chief Medical Officer... More

Todd R. LePine, MD

Senior Medical Advisor

Dr. LePine graduated from Dartmouth Medical School and is Board Certified in Internal Medicine, specializing in Integrative Functional Medicine. Additionally, he has advanced clinical training through the Institute for Functional Medicine. Dr. LePine is a staff physician with Dr. Mark Hyman at The UltraWellness Center located in Lenox, Massachusetts in the Berkshires. Prior to joining the UltraWellness Center Dr LePine worked as a staff... More

Ralph Esposito, ND, LAc

Medical Consultant and Research Analyst

Dr. Esposito is a naturopathic physician, acupuncturist and functional medicine practitioner specializing in integrative urology, men’s health and nutrigenomics. His precise and personalized style utilizes a systems biology and precision medicine approach to medicine.

In addition to advising as a peer reviewer for medical journals, he has authored several medical textbook chapters and has designed education modules for health... More

Tom Fabian, PhD, CNTP

Educator and Medical Consultant

Tom is a functional nutrition practitioner, consultant, educator, speaker, and former research scientist. His primary expertise is in how the microbiome interacts with the digestive, immune and nervous systems, and how it influences metabolic processes. He has developed online educational programs for practitioners seeking in-depth education in the microbiome and related topics. He also has extensive experience in the areas of aging and... More

Robert Boyd ND, CNS

Educator and Medical Consultant

Dr. Boyd is a Naturopathic Physician and Certified Nutrition Specialist® professional specializing in thyroid disorders, fertility and men’s health. He also has interests in digestive disorders and autoimmune disease. He has spent years researching the field of nutrigenomics as well as the gut microbiome and tailors many of his treatment approaches around these complex fields.

Dr. Boyd graduated Summa... More