Our team

Our Team

Dr. Joseph Steyr

Naturopathic Doctor
Dr. Joseph Steyr is a Naturopathic Doctor, Co-Founder and the Medical Director at Greystones Health.


Dr. Steyr uses a functional medicine approach in his practice, meaning he looks for the root cause of the health concern in order to provide a deep and long lasting solution for his patients. Dr. Steyr has extensive additional training in the science of functional medicine and is regularly reviewing current medical research. He sees his career as the perfect union between modern medicine and traditional knowledge. He brings a blend of conventional medical sciences and traditional health philosophies into his practice, which allows him to see a person’s health from multiple points of view.


He sees himself not only as a doctor, but also as an educator – with so much conflicting medical information, he educates his patients on all treatment options to ensure he and his patients can make the best informed decisions together for the patients’ health.


Dr. Steyr treats a variety of conditions such as fertility and hormone regulation, stress, endometriosis, menstrual irregularities, mental health, low energy, depression, anxiety, IBS, food intolerances, digestive problems, and men’s health conditions.


An initial appointment with Dr. Steyr includes an in-depth medical history, a physical examination, review of recent lab tests (or the discussion about future lab testing), and an individualized treatment plan. Dr. Steyr works in a team approach with our nutritionist to help ensure patients have the dietary supported needed to achieve success with their treatment plan. While Dr. Steyr may use nutritional supplements to help boost a patient’s recovery time, his real emphasis is on dietary and lifestyle changes that will help support healing for the long-term.


Dr. Steyr is a graduate of Canadian College of Naturopathic Medicine and is registered with the College of Naturopaths Ontario.

Michelle Heighington

Registered Holistic Nutritionist, Certified Holistic Cancer Practitioner
Michelle Heighington is a Registered Holistic Nutritionist, and is a Co-Founder and the Medical Co-ordinator at Greystones Health.


A graduate of the Canadian School for Natural Nutrition and the University of Toronto’s medical anthropology specialist program, Michelle has counselled clients with a wide variety of medical conditions such as diabetes, food allergies, women’s health issues, endometriosis, fertility, and digestive tract disorders. She has also worked with many people to overcome health issues related to chronic stress.


Michelle develops nutrition plans that can include a meal plan but goes above and beyond this to consider all aspects of a person’s health. She works as part of a team approach with our naturopathic doctors by implementing dietary advice to help support treatment plans. As the Medical Co-ordinator she is a point of contact for patients who have questions or need additional support or encouragement during their treatment phase.

Dr. Julia Segal

Naturopathic Doctor
Dr. Segal is a Naturopathic Doctor with an interest in women’s health, digestion and the immune system. She enjoys working with people at every level of their health, particularly through periods of change, growth and stress which both create challenge and build resilience. She has a particular interest in:


-Pregnancy and postpartum


-Women's health concerns including menstrual concerns, PCOS and endometriosis, as well as menopause




-Thyroid health and hormone balance


- Gastrointestinal health: GERD, acid reflux, IBS, IBD, SIBO, SIFO, chronic constipation, Crohn’s, colitis, food intolerances


-Immune health


-Autoimmune conditions


Having worked in both medical and dental settings integratively, Julia has spoken on inter-professional panels and collaborated in the integrative treatment of a wide variety of patients. She also teaches at the Canadian College of Naturopathic Medicine. Striving to address the individual rather than the disease, Julia sees herself as a detective for the root cause. Her approach synergizes botanical medicine, nutrition, TCM and Ayurvedic approaches, homeopathy, Bowen Therapy and counselling. Treatment is based upon an integrative health assessment that blends Western and Eastern medicine and allows her client’s voice to be heard. Julia`s objective is to enable patients to restore and maintain true well-being, both by helping them remove the obstacles to health and by utilizing the best of natural medicine. Julia is a graduate of the Canadian College of Naturopathic Medicine (CCNM), and is licensed with the College of Naturopaths of Ontario. She has a bachelor of science in Biological Psychology from the University of British Columbia. She is also a certified postpartum professional and works with pregnant and new moms to support their healing and adjustment to motherhood. Julia is fluent in Russian (spoken and written).


Dr. Julia Segal’s hours at Greystones Health:


Monday 10:30am to 3pm Wednesday 11:00am to 7pm Sundays – available upon request. Please contact us for more details

Dr. Sahar Tabrizi

Naturopathic Doctor
Dr. Tabrizi pursued her career as a naturopathic doctor because of her core belief that people should be educated on their options in healthcare, and that all people are ultimately responsible for their well-being. With this, she develops a collaborative relationship with her patients in which they work together to achieve goals. Her appointments provide patients with knowledge, a comprehensive treatment plan, and the motivation to be proactive in their health. Her wish is that through her support she can provide patients the tools they need to attain their optimal health, and translate this into success and happiness in their own lives. Dr. Tabrizi is well-versed in a variety of concerns including weight-loss, mood, energy, digestion and brain health. Her areas of interest are:


- Work-related burnout and low energy for ambitious women


- Weight-loss


- Gastrointestinal health: GERD, acid reflux, IBS, IBD, SIBO, SIFO, chronic constipation, Crohn’s, colitis, food intolerances


- Athletic performance and sports acupuncture


- Cosmetic acupuncture and facial rejuvenation


She focuses on the regulation of hormones to optimize biochemical processes in the body, through nutrition, medicinal herbs and lifestyle. She also uses acupuncture as a tool in pain management and anti-aging beauty. Dr. Tabrizi completed her undergraduate degree with a Bachelor of Science in Psychology at York University, with honours. She then went on to study at one of Canada's premiere institutes, the Canadian College of Naturopathic Medicine. She completed her clinical internship at the Robert Schad Naturopathic Clinic where she had a special focus in Sports Medicine, as well as the outpatient clinic at Brampton Civic Hospital. Currently she is registered with the College of Naturopaths of Ontario, with good standing. She is additionally certified as an international sports nutritionist, personal training specialist, and cosmetic acupuncturist.


Dr. Tabrizi’s hours at Greystones Health:


Thursday 11am –7pm

Dr. David Nortman

Naturopathic Doctor
David Nortman is a naturopathic doctor with a clinical focus on treating chronic conditions using classical homeopathy – a naturopathic modality that addresses the underlying mental, emotional, and spiritual roots of disease. Homeopathy can address the full gamut of chronic and acute conditions ranging from infections and skin eruptions to advanced neurological and autoimmune conditions. By tapping into the healing potential of the mind-body-spirit connection, homeopathy is capable of healing physical and psychological concerns that may be resistant to other forms of treatment.


In addition to homeopathy, Dr. Nortman incorporates coaching principles, guiding his patients as they increasingly find alignment with their life purpose. Working as a health detective, he has a knack for identifying physical causes of disease frequently overlooked by medical doctors. Outside the clinic, he strives to educate lay and professional audiences about homeopathy, naturopathic medicine, public health, and philosophy of science.


Dr. Nortman most commonly works with patients having mental health concerns such as anxiety and depression, autoimmune disorders such as Hashimoto’s, psoriasis and Multiple Sclerosis, SEL, stress-related hormonal conditions, and sleep disorders such as insomnia and sleep apnea. Working with children, he primarily addresses autoimmune, behavioural and developmental disorders.


Dr. Nortman is a graduate of the University of Toronto (Hon.B.A. in Philosophy and Chemistry), Tel-Aviv University (M.A. in Philosophy), and the Canadian College of Naturopathic Medicine (N.D.). He has completed extensive postgraduate studies in classical homeopathy with many of the world’s leading homeopathic practitioners, and continually keeps at the cutting-edge of the evolving knowledge within the homeopathic and naturopathic professions.


Dr. Nortman works with patients worldwide via telemedicine, with consultations available in English, Hebrew, and Russian.


Dr. Nortman’s hours at Greystones Health: Dr. Nortman is currently only offering virtual appointments. Please call for his availability.

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