Best Endocrinologists in St. Catharines, ON

Expert-recommended Top Endocrinologists in St. Catharines, ON. All of our endocrinologists actually undergo a rigorous 50-Point Inspection, which includes everything from checking reviews, ratings, reputation, history, complaints, satisfaction, trust and price - all to ensure overall excellence. You deserve only the best!

Dr. Andrea Delrue - St Catharines, ON Endocrinologists - Doctor Portrait Image
8+ YEARS ON TBR
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DR. ANDREA DELRUE

NIAGARA DIABETES AND ENDOCRINOLOGY CLINIC
277 Welland Avenue, Unit #11,
St. Catharines, ON L2R 2P7 Directions

Since 2004

Specialty:

✓Type 1 Diabetes ✓Type 2 Diabetes ✓Diabetes in Pregnancy ✓LADA ✓ Monogenic Diabetes ✓Steroid-Associated Diabetes ✓Pre-Diabetes ✓Complications of Diabetes

"Dr. Andrea Delrue earned her medical degree at the University of Toronto. She completed her training as an Internal Medicine specialist at the University of Toronto. She is an active staff doctor with Niagara Health and a Part-Time Assistant Clinical Professor of Medicine at McMaster University. She additionally completed the Canadian Patient Safety Officer Course, the OMA Physician Leadership Program, and the advanced IDEAS Quality Improvement Training program. She utilizes technology in diabetes care, including insulin pumps. Dr. Andrea Delrue is proficient in English and French. Dr. Andrea Delrue practices at Niagara Diabetes and Endocrinology Clinic. Her goal is to provide a healthcare experience that is more convenient, efficient and comprehensive. Dr. Andrea Delrue has an interest in patients with complex comorbidities.

2026 Highlights: Dr. Andrea Delrue incorporates technology into diabetes care, including insulin pump therapy, and has completed additional training in patient safety, physician leadership, and quality improvement."

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License #81076

Contact:

(289) 480-0192

Mon-Fri: 8:30am - 4:30pm
Sat & Sun: Closed

TBR® Inspection Report:

Dr. Gillian Mazzetti - St Catharines, ON Endocrinologists - Doctor Portrait Image
9+ YEARS ON TBR
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DR. GILLIAN MAZZETTI

NIAGARA DIABETES AND ENDOCRINOLOGY CLINIC
277 Welland Avenue, Unit 11,
St. Catharines, ON L2R 2P7 Directions

Since 2011

Specialty:

✓Diabetes ✓Thyroid ✓Adrenal ✓Pituitary and Gonadal Disorders ✓Osteoporosis ✓Calcium Disorders

"Dr. Gillian Mazzetti completed her medical degree at the University of Calgary and completed an Internal Medicine Residency at McMaster University. She also earned her endocrinology fellowship at McGill University. Dr. Gillian Mazzetti has been practicing community endocrinology in the Niagara region since 2016. Dr. Gillian Mazzetti practices at Niagara Diabetes and Endocrinology Clinic. She is certified in Internal Medicine as well as Endocrinology and Metabolism by the Royal College of Physicians and Surgeons of Canada.

2026 Highlights: Dr. Gillian Mazzetti works with patients to assess their individual needs and develop appropriate treatment and follow-up plans."

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License #95404

Contact:

(289) 480-0192

Mon-Fri: 8:30am - 4:30pm
Sat & Sun: Closed

TBR® Inspection Report:

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