New Family Medicine Network

Dr. Lianne Butterfill MD CCFP

Dr. Josephine Dunston MD CCFP


Karen Hershenfield MPC MD CCFP

Joanne Laine-Gossin MPC MD CCFP FCFP

Lara Rosenberg MPC MD CCFP

Kimberly Wintemute MPC MD CCFP FCFP

David W. Eisen, MD

I'm a practicing family physician with active clinical and teaching interests in Obstetrics, Newborn Care and Women's Health. I have an academic practice in association with North York General Hospital and the University of Toronto.


I teach students from other programs including the Ryerson University Midwifery program. I have chaired the Family Medicine Obstetrics Division at NYGH, and served on all of the Maternal Newborn committees there. I serve NYGH as Chief, Department of Family and Community Medicine. I have served the College of Physicians and Surgeons of Ontario in several capacities.

Karen Hershenfield, MD
I graduated from the University of Toronto Medical School in 2007. I completed my residency and low-risk Obstetrical fellowship training in Toronto. I am involved in teaching medical students and residents in our office and at North York General Hospital. I hold the appointment of Lecturer at the University of Toronto Department of Family and Community Medicine and am an active staff at North York General Hospital


Kimberly Wintemute, MD

I finished my Residency at the University of Toronto in 2002. I provide family medicine care that includes obstetrics, home visits, and palliative care.

I am an assistant professor for the University of Toronto and I'm passionate about teaching and ongoing learning. I sometimes have students with me in the office. I am currently a Primary Care Co-Lead for Choosing Wisely Canada, a national campaign to help clinicians and patients engage in conversations to reduce unnecessary tests, procedures and treatments. 

I was Medical Director of North York Family Health Team from 2008-2016 and I was incredibly honoured to be the recipient of the 2014 Regional Family Physician of the year award from the Ontario College of Family Physicians. 

Erika North, CCPA

I completed my Physician Assistant training at the University of Toronto in 2013 after practicing as a Registered Massage Therapist for 10 years.


I am going into my 8th year of practice with this fantastic team. I follow patients with diabetes and hypertension amongst other chronic diseases. I also do preventative care visits (ex: pap smears), and provide same day access for acute issues.

I am passionate about health and helping our patients achieve their health care goals.


We are a community teaching practice, affiliated with North York General Hospital and the University of Toronto.  In addition to regular office visits, we provide a number of services outside the office, including obstetrics, same day appointments for urgent care, after-hours clinic coverage and some home visits.

We are part of the North York Family Health Team, and as such offer a variety of services, including chronic disease management, social work services, chiropody, dietary expertise, smoking cessation, cancer survivorship, and many other programs.  For a full description of our NYFHT please visit this link:

We are also involved in Quality Improvement and Research, and participate in a variety of projects that enhance both patients’ and providers’ care and satisfaction.

Your preventative and acute health care needs are our priorities.

Lara Rosenberg, MD

I practice comprehensive family medicine as part of the North York Family Health Team and have a special interest in maternity care. I am currently the Chair of Family Medicine Obstetrics at North York General Hospital. I enjoy teaching residents and medical students in our community office and at the hospital.

I earned my medical degree from the University of Ottawa in 2008 and then completed my Family Medicine residency at the University of Toronto. I then obtained my fellowship in low risk obstetrics at the University of Toronto.

New Family Medicine Network

501-1110 Sheppard Ave E

North York, ON

M2K 2W2

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