We Are Stem Health.

Healthcare designed to be human, to move forward, and to remember what matters. A physician-led practice bringing proactive, primary care to Toronto, for individuals, families, and businesses.

Why we exist

Healthcare Should Remember You, and Move You Forward.

Stem Health pairs you with a team built around your goals, and advanced diagnostics that make next steps obvious and timely. Your shared record connects every provider into one clear Health Story, so momentum continues between visits and nothing important is left behind. You feel seen, plans stay on track, and progress is easy to recognize.

Built for individuals, families, and businesses who want proactive and primary care without friction, Stem blends physician-led rigour with elevated attention. The result is better decisions sooner, fewer repeats, more continuity, and support where life happens. Personal care, clear progress, seamless continuity, delivered as one experience. This is care rooted in you.

Care Built on Three Connected Ideas.

Everything we do rests on these, and they are what make care feel different here.

01

A Continuous Care Team

A dedicated physician and Care Advocate who know you by name and stay with you across every visit, virtual and in person.

02

A Living Health Story

One record that carries forward visit to visit, so nothing is lost and nothing is explained twice.

03

Proactive Diagnostics

Advanced testing that surfaces early signals long before symptoms, read against your history and translated into a plan.

2026
flagship clinic opening at First Canadian Place, Toronto
biomarkers across nine body systems
1
continuous Care Team, across virtual and in-person
CPSO
licensed and PHIPA-compliant care in Ontario

The People Behind Your Health Story.

From the physicians and Care Advocates who lead your care, to the operators and leaders building the systems that keep it all connected.

The Care Team

Dr. Alisa Naiman

Primary Care Physician

A family physician with over 20 years of experience, Dr. Naiman founded and led The Medical Station as Medical Director for nearly a decade. She teaches at the University of Toronto, consults for the Ontario Ministry of Health, and brings health topics to the public weekly as a panelist on Zoomer Radio’s The Medical Record.

Camille Lalonde, NP

Primary Care Nurse Practitioner

A bilingual nurse practitioner and award-winning clinical leader, Camille managed virtual care operations for 3 million Canadians at TELUS Health. She brings nearly a decade of emergency medicine experience and deep expertise in building care systems that scale.

Leadership & Operations

Ashim Khemani

Chief Executive Officer

Ashim has spent over two decades leading healthcare, insurance, and professional services organizations, including as President of Medcan Health and CEO of Aon Consulting.

Katherine MacArthur

Senior Vice President, Operations

Katherine is a former CA and consultant with a background in healthcare operations and health technology, with experience leading operations at Inkblot Therapy and Think Research.

Erik Peterson

Director of Technology & Data

Erik brings over a decade of experience founding technology companies in AI, machine learning, and immersive media. At Stem, he focuses on how technology can make proactive care smarter and more seamless.

Sarah Bennet

Product Manager

Sarah holds a Master’s in Medical Physiology from the University of Toronto and brings experience across healthcare innovation and product management.

Zara Salman

Operations

Zara works across operations and clinical administration at Stem, helping ensure that the systems behind your care are as organized and attentive as the care itself.

Prem Kohli

Sales & Account Management

With deep experience in procurement, strategic sales, and partnership development, Prem focuses on building the relationships that bring Stem’s care model to employers and their teams.

Portraits coming soon

Good to Know.

Who is Stem for?
Individuals, families, and businesses who want care that knows them, moves with them, and stays ahead of their health.
Where are you located?
Our flagship clinic is at 1 First Canadian Place, Toronto, opening September 28, 2026. Virtual primary care is live across Ontario today.
Are you licensed?
Yes. Stem is licensed under the College of Physicians and Surgeons of Ontario, and your information is held in a PHIPA-compliant record.
How do I reach the care team?
Email care@stemhealth.ca or call 416 572 3500. Members can also message their Care Advocate directly in the portal.

Care Rooted in You.

A new standard of proactive, membership-based primary care. A doctor who knows you, diagnostics that reveal the full picture, and coordinated care that moves your health forward.