Our Team
About Us
With a combined total of over 140 of years in clinical practice, our team of doctors is both experienced and committed to helping you find the root cause of your health concern. Our providers work together to help you address biochemical, nutritional and musculoskeletal concerns. Learn more about our doctors here.
Doctors
Mark Drucker, M.D.
Co-Founder, Medical Director
Mark Drucker, M.D. is the Medical Director of the Center for Advanced Medicine. He specializes in preventative medicine, healthy aging and natural hormone therapies. I am often asked why I, a Medical Doctor, decided to go into integrative medicine. Well, the answer is simple: I did it for the same reason that I became a Medical Doctor, to help people have happier healthier lives and also to ease pain and suffering. Read More…
William Kellas, Ph.D.
Founder
Founder Dr. William Kellas holds a Ph.D. in Nutritional Biochemistry and specializes in getting to the root cause of his patients health issues. He is a doctor with the heart of a patient. Raised in Detroit, Michigan until the age of 12 when he and his family moved to Southern California. In college his major was pre-med physics. During his studies he began to see that medicine was becoming more directed toward drug treatment and technology than hands on and solving health problems. Disillusioned, he changed his major to Business. Read More…
David Nelson, Ph.D., D.Ch
Co-Founder
David Nelson, Ph.D. is a Nutritionist and Traditional Naturopath who has been part of the Center for Advanced Medicine for over 18 years. His core specialty is allergy, nutrition and biological assessment of the root cause of a patient’s health. With more than two decades of nutritional and wellness coaching experience, Dr. David Nelson has developed a passion for encouraging people to pursue a purpose filled desire for good health and wellbeing, physically, mentally and spiritually. Read More…
Franne Berez, MD, ND
Functional Medicine
Franne Berez, MD, ND is our newest addition to our elite medical team. Prior founder and Director of the Squirrel Hill Family Wellness Center, she is among less than 300 doctors in the US board certified in Functional Medicine by the Institute of Functional Medicine, in Integrative Medicine by the ABIHM, and is considered a pioneer in integrative family wellness in Pittsburgh. She first received her naturopathic degree in 1976 Read More…
Fred Seyfried, DC, HHP
Chiropractor
Dr. Fred Seyfried helps restore function and balance to the nervous system in order to minimize pain and maximize the body’s potential to heal itself. And Dr. Fred believes that effective chiropractic treatments go well beyond skeletal and muscle manipulation which, in doing so, help to dismantle negative energy blocks that may hinder a person’s health potential and vitality….Read More…
Practitioners
Judy Michno
Colon Hydrotherapist
Judy is one of our caring and compassionate Colonic Therapists, who started as a patient years ago. After regaining her health, she decided to become a Colonic Therapist. She has been with the clinic for over 25 years, serving patients in eliminating waste and detoxing the colon through a combination of colon-hydrotherapy and electro-lymphatic massage techniques. Her love of people and education are seen in her burgeoning practice that she considers a ministry.
Dana Mathis
Colon Hydrotherapist
Dana joined the Center for Advanced Medicine as a Colon Hydrotherapist about ten years ago. Dana also specializes in clinical nutrition and lymphatic therapeutic massage technique. She began a lifestyle of fasting and cleansing, organic gardening and practicing a vegetarian diet at the age of 17. Dana enjoys working alongside doctors who consider the body, mind and spirit as a whole entity to be treated. She is loved by her patients who enjoy her upbeat personality and sweet spirit.
Staff
Heather Gervasi
Practice Administrator|Microcurrent Technician
Heather Gervasi joined Center for Advanced Medicine (CAM) in November 2017 after demonstrating her electrotherapy technique on Dr. William Kellas, co-founder of Center for Advanced Medicine, who was suffering from foot pain from neuropathy and MRSA, a bacterium that causes infections in different parts of the body. Outstanding results from this interactive microcurrent treatment propelled her immediately into Clinic to work under the supervision of doctors on CAM patients also suffering from MRSA and/or inflammatory autoimmune conditions. Her adjunct therapy and modified protocols designed to repair damage to nerves, connective tissue, muscle, ligament and bone compliments CAM’s offering of advanced personalized integrative medicine and protocols. Read More…
Jacob Dubizhansky
Marketing Director
