Welcome, all humans.
We are patient-centered, collaborative,
preventive, and root-cause motivated.
Susannah Kerwin
Owner
Susannah is a board-certified Adult Nurse Practitioner specializing in Adult Holistic and Functional Medicine.
Susannah Kerwin is an Advanced Practice Nurse Practitioner trained in functional medicine by the Institute for Functional Medicine. She holds degrees from the University of San Francisco and New York University and has been helping patients define and realize their best health for more than twenty years. Susannah started Tendwell after seeing first-hand how traditional medical practices shortchange patients by focusing on simple protocols and algorithms designed to maximize throughput and revenue, rather than taking the time to assess the whole person and to dive deeply into the root causes of dysfunction.
At Tendwell, Susannah uses cutting edge functional medicine techniques with her patients to not only address root causes, but to optimize health, all while keeping patients at the center and working collaboratively. Tendwell patients access advanced genetic, hormone and other testing to pinpoint issues often overlooked in traditional medical practices. In terms of treatment modalities: Susannah prioritizes nutritional and other non-pharmaceutical approaches and considers her patients as whole persons, not just lists of symptoms to be plugged into treatment algorithms. The results speak for themselves. Tendwell patients consistently rate themselves healthier, happier and more satisfied.
Prior to forming Tendwell. Ms. Kerwin lived and practiced in San Francisco, New York City, and overseas, including a year in China, where she spent time exploring Chinese traditional medicine. In her free time, Susannah loves to hang out with her kids. She enjoys travel & exploring new places. She is also an avid runner & Pilates enthusiast.
Leia Desousa
Nutritional Coaching
Leia is a New York City-based nutrition and health coach with extensive experience supporting clients’ journeys to better health and wellness. Working in concert with our functional medicine practitioners, Leia takes the time to listen and to provide a gentle, but firm, guiding hand to help patients address obstacles and improve motivation to implement their health plans. From restocking your kitchen, planning your menus, to optimizing your calendar and practicing healthy habits, Leia will help you revamp your relationship with food, one step at a time.
Tendwell members are entitled to health coaching visits as part of their subscriptions. For those who wish to purchase additional health coaching session, please click the link below:
What patients are saying
“Susannah is patient, kind, asks good questions, a good listener, and very knowledgeable. She made me feel heard and respected. I would definitely come back to see her again. The best medical visit experience I've had.”
— Kristina
“After trying unsuccessful conventional approaches for years (literally), Susannah helped me attend to what was going on with my body and my mind together as a system. I feel like she provided the missing piece to the puzzle.”
— Charlotte
"I came to Leia a few years ago, after wrestling with food issues for a long time. In addition to her incredible skill and vast knowledge, it was her attentiveness and genuine care for my well-being that made a huge difference in my progress. "
— Jared