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 What We Do

The Endocrinology Clinics specialize in managing complex hormonal diseases. The members of our team have expertise caring for ambulatory patients with diabetes, lipid ("cholesterol") disorders, thyroid disease (benign and malignant), osteoporosis and disorders of other endocrine organs such as the pituitary, parathyroid and adrenal glands.

Our diabetes management team is made up of endocrinologists and specially trained diabetes nurse- educators and dietitians. We also support patients through a consultation team staffed (on a rotating basis) by an endocrinologist and medical residents.

What We Treat

Diabetes
Type 1, type 2 (not diabetes in pregnancy)

Dyslipidemia

Thyroid disease
Thyroid cancer, hyperthyroidism, thyroid nodules, hypothyroidism

Parathyroid disease
Hyperparathyroidism, hypoparathyroidism

Pituitary disease
Pituitary tumours, cushings disease, acromegaly, diabetes insipidus, hypopituitarism

Adrenal diseases
Adrenal tumou​rs, hyperaldosteronism, pheochromocytoma, congenital adrenal hyperplasia, Addison's disease

How to Prepare

Learn more about what you can expect when you have a clinic appointment.​

 Materials and Resources to Help You

Resources from the Patient & Family Education Program PDF Icon

* These material(s) are also available in other languages.

Visit our Health Information section and find dedicated resources to help you understand your condition. Find the information you're looking for.

 Meet Our Team

Our team has several endocrinologists and specially trained diabetes nurse educators and dieticians.

Interim Division Head: Dr. Gary Lewis

Medical Director: Dr. Phillip Segal

Manager: Janice Ritchie

Toronto General Hospital

Note: Drs. Miranda Boggild, Karen Gomez Hernandez, Calvin Ke, Gary Lewis, Ari Morgenthau, Phillip Segal and Shirine Usmani all share the following contact information:
Phone: 416 340 3772
Fax: 416 340 5223

Dr. Miranda Boggild – General Endocrinology, Metabolic Bone Disease, Osteoporosis, Trans Care

Dr. Satya Dash – Obesity, Insulin Resistance, General Endocrinology, Type 2 Diabetes, 22q11.2 Deletion Syndrome
Phone: 416 340 8094
Fax: 416 340 3314

Dr. Diane Donat – Diabetes, General Endocrinology (practice currently open, however not accepting new referrals)
Phone: 416 340 3592
Fax: 416 340 3314

Dr. Shereen Ezzat – Endocrine Oncology
Phone: 416 340 3316
Fax: 416 340 4565

Dr. Karen Gomez Hernandez – Endocrine Oncology, Thyroid Tumours, Multiple Endocrine Neoplasia Syndromes, Pheochromocytoma/Paraganglioma, Pituitary and Adrenal Diseases

Dr. Calvin Ke – Diabetes, Obesity, Thyroid Disorders, General Endocrinology

Dr. Gary Lewis – Type 2 Diabetes and Lipid Disorders

Dr. Ari Morgenthau – Endocrine Genetics and General Endocrinology

Dr. Anna Sawka – Thyroid Neoplasms, Thyroid Nodules, Thyroid Cancer
Phone: 416 340 3678
Fax: 416 340 3314

Dr. Phillip Segal – Thyroid Cancer and Thyroid Disease, General Endocrinology

Dr. Shirine Usmani – Osteoporosis, Metabolic Bone Disease, General Endocrinology

Dr. Rene Wong – General Endocrinology
Phone: 416 340 4053
Fax: 416 340 3314

Dr. Minna Woo – Diabetes, Thyroid Disease, General Endocrinology
Phone: 416 340 5214
Fax: 416 340 3314

Toronto Western Hospital

Dr. Tehmina Ahmad – General Endocrinology, Metabolism
Phone: 416 603 5709
Fax: 416 603 5590

Dr. Rowena Ridout – Disorders of Bone Metabolism, General Endocrinology
399 Bathurst Street
Phone: 416 603 6454
Fax: 416 603 5518

Dr. Robert Silver – Diabetes, General Endocrinology
Phone: 416 603 6453
Fax: 416 603 7378​

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