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We’re on a mission to improve the lives of people with mental health conditions through technology and services.

Our vision is one day every person with a mental health condition will receive the care that they need.

We believe that mental health should be treated just like any other health condition. That’s why we begin with primary care. We arm doctors with the right tools to diagnose patients and easily refer them to a trusted network of mental health providers.  

Our collaborative, tech-enabled approach connects people to the right care at the right time.

We partner with health plans and systems to facilitate access to personalized care and enable virtual collaboration between providers to ensure the best health outcomes.

Hear from the experts

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We put human touch back in healthcare.

For both providers and patients, navigating the mental health space is difficult and confusing. That’s why we employ trained specialists and clinicians supported by our application to provide ongoing support for providers and patients to improve the experience and outcomes.

Leadership

David Wennberg, MD, MPH

Chief Executive Officer

David Wennberg, MD, MPH

Chief Executive Officer

Prior to becoming Quartet’s CEO, David was Quartet’s Chief Data Scientist and led the Business Development team. David previously served as the Chief Executive Officer of the Northern New England Accountable Care Collaborative (NNEACC), and as the Chief Executive Officer of the High Value Health Collaborative at The Dartmouth Institute. A co-founder of Health Dialog Analytic Solutions, the analytic division of Health Dialog, David served as Health Dialog’s Chief Science Officer. David received his MD from McGill University and MPH from the Harvard School of Public Health, and is a member of the Dartmouth Institute for Health Policy and Clinical Practice faculty.

Robert Accordino, MD, MSc

Chief Mental Health Officer

Robert Accordino, MD, MSc

Chief Mental Health Officer

Robert previously served as the Chief of Psychiatry and Behavioral Health at CareMore Health System and as a White House Fellow, advising the Secretary of Defense on health care delivery for service members and their families. Board certified in general psychiatry, he completed a fellowship in child and adolescent psychiatry at Massachusetts General and McLean Hospital of Harvard Medical School and a residency in general psychiatry at New York-Presbyterian Hospital of Weill Cornell Medical College. During medical school, he founded the nonprofit organization Music for Autism. He received an A.B. from Princeton University; an M.Sc. in Psychology from Oxford University supported by a Fulbright Scholar; and an M.D. from Mount Sinai School of Medicine. He continues to practice psychiatry and is on the faculty of Massachusetts General Hospital.

Teresia Bost, JD

General Counsel

Teresia Bost, JD

General Counsel

Teresia brings over 20 years of experience as an attorney to her position as General Counsel of Quartet. She is admitted to practice law in NY, NJ and CT and has notable experience facilitating global business operations, corporate governance, compliance, commercial contracts, and social responsibility. Prior to joining Quartet, she was at Celgene for almost 14 years, where she served as a strategic partner to account executives contracting with insurance plans, pharmacies, wholesalers, physician practices and vendors, as well as advising in other areas in healthcare law, including HIPAA. Teresia was featured in the New Jersey Rising Stars Super Lawyers publication in 2006 and 2007 and was honored by the Executive Women of New Jersey in their 2016 “Salute to Policymakers.” Teresia holds a B.A. from Fisk University, a JD from Touro Law Center and has completed coursework toward an LL.M. in European Business Law at the University of Amsterdam.

Sarah Donnelly

Chief Product Officer

Sarah Donnelly

Chief Product Officer

Sarah leads Quartet’s Product team, bringing with her over ten years of experience in health technology development. Her career began with an Electronic Medical Record focus for major health systems in the US and UK, where she gained a wealth of experience in the problems, opportunities and complexities of practicing medicine in a changing technical world. She later led the technical and process change for a major hospital in New York, bringing their Emergency Department off of paper and into a scalable, safer future using technology. Most recently, Sarah consulted with a focus on integrating disparate technical solutions with a strong user-focused methodology. She joined Quartet, inspired by the mission and motivated to ensure Quartet’s position as a key partner to all patients and providers in the mental health landscape.

Caroline Johansen

Chief of Staff

Caroline Johansen

Chief of Staff

Prior to serving as Chief of Staff, Caroline was as a member of Quartet’s operations team. She joined the company in 2016 as one of the first members of the patient engagement team, and was a leader in building systems to reach patients with the care and support they need. Caroline previously worked in clinical research as an associate at NY Presbyterian Hospital and at Cohen Children’s Medical Center. She earned a B.A. in Human Development from Brown University and attended Columbia University’s post-baccalaureate premedical program.

Ingrid Kessler

Chief People Strategy Officer

Ingrid Kessler

Chief People Strategy Officer

Ingrid comes to Quartet with over 20 years of experience in the “people” world. Most recently, Ingrid was Head of People at Dataminr, the world’s leading AI information discovery company, and Chief Human Resources Officer at Lab49, a global fin tech consulting company. In these roles, she added high performing diverse talent throughout rapid growth phases, while creating and maintaining highly engaged cultures at scale.

Ingrid is passionate about empowering talented individuals to succeed, creating inclusive, motivated cultures, and achieving strategic business results in mission-driven environments.

Quartet brings Ingrid back to her roots in mental health, leveraging her Bachelor’s and Master’s Degrees in Psychology from Washington University and NYU, respectively.

 

Kevin Kumler

Chief Operating Officer

Kevin Kumler

Chief Operating Officer

Kevin brings 20 years of experience in healthcare and was named an “Up & Comer” by Modern Healthcare in 2017. He spent over six years at Zocdoc, helping increase access to care for patients across the United States. He led the expansion of Zocdoc’s private practice business to all 50 states and built an enterprise solution for large provider groups and health systems.

Kevin worked as an Associate Principal in McKinsey & Company’s Healthcare practice, where he served insurance companies, large health systems, and government organizations in the US, UK, and India. He also worked in Business Development & Strategy at Mount Carmel Health.

Kevin has an MBA from Stanford University and a BA in Mathematics-Economics from Wesleyan University.

David Lim, MD, PhD

Chief Medical Officer

David Lim, MD, PhD

Chief Medical Officer

Dave is a founding team member and has worked at Quartet since December, 2014. He previously served at Castlight Health where he led Provider Relations and Innovation. Prior to this he was a Project Leader at The Boston Consulting Group (BCG) where he launched the International Consortium for Health Outcomes Measurement (ICHOM). By background, Dave is an infectious disease specialist completing fellowship at UCSF (University of California, San Francisco) and internal medicine residency at Johns Hopkins Hospital. He received his MD/PhD degrees from Columbia University, Vagelos College of Physicians and Surgeons. A graduate of Harvard College, Dave has experienced first-hand the challenges of navigating his patients from his infectious disease practice into effective behavioral health care pathways.

John Vandermay

Chief Technology Officer

John Vandermay

Chief Technology Officer

John brings over 30 years of accomplished hands-on software engineering and engineering-leadership experience to Quartet. Prior to Quartet, John was CTO at Lightspeed, a world leading cloud-based eCommerce, retail and restaurant point of sale provider. Before Lightspeed, John held senior engineering leadership roles at Collective, Dassault Systems, BlackBerry, FusionIO and Omniture.  John holds a Bachelor of Science degree in Physics and Computer Science from Wilfrid Laurier University in Waterloo, Ontario.

Board

Steve Shulman

Chairman

Carl Byers

F-Prime Capital Partners

Brian Chee

Polaris Partners, Observer

Ken Goulet

Board member

Arun Gupta

Founder

Patrick Kennedy

Board Member

Annie Lamont

Oak HC/FT

Nathan Hanks

Board Member

Krishna Yeshwant

General Partner, G/V

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Quartet is headquartered in NYC with operations in Pennsylvania, Washington, Northern California, New Jersey, North Carolina, Louisiana, and Illinois.

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