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Meet Quartet

We're on a mission to improve people's health and quality of life by integrating mental and physical care.

Our Story

Nearly half of the U.S. adult population suffers from a chronic physical condition, and one-third of those has an accompanying mental health condition exacerbating the illness, reducing quality of life, and increasing medical costs.

Yet to this day, physical and mental health are treated separately - the latter often getting overlooked as a core contributor to our overall health. The lack of integration has dire implications: poor disease management, unnecessary hospitalizations, medication mismanagement, and emotional distress. It perpetuates a cycles of suffering and ballooning costs.

Quartet is bridging physical and mental care to improve people’s health and quality of life. We are building a collaborative health ecosystem by curating effective care teams and combining their expertise with data-driven insights. By ensuring care is tailored to individual needs we strive to significantly improve patient outcomes, their overall well-being, and dramatically reduce costs.


Arun Gupta
Founder & CEO

General Partner at Accretive. Founding team at Accolade. Palantir. McKinsey & Company. Masters from Harvard Kennedy School. BS from Duke University.

David Liu
President & COO

President & COO at Knewton. Senior VP, Global Messaging Products at AOL. Founded portal. MBA from Columbia Business School, BS in Industrial Engineering from Purdue University.

David Wennberg
Chief Science Officer

CEO of Northern New England Accountable Care Collaborative. Founder Health Dialog Analytic Solutions. MD from McGill, MPH from Harvard University.

Shilpa Patel
General Counsel

Counsel at Oscar Insurance. Attorney at Foley & Lardner. BA from Tufts University, JD from Brooklyn Law School.

Jerome Kapelus
Chief Financial Officer

CFO/COO at BookedOut and Gigunda Group. CFO at Usablenet. SVP at Comtech Telecommunications. Managing Dir. Bear Stearns. BA in Economics from Trinity College.

Erin Dertouzos
Chief People Officer

Head of Talent & Culture at Meetup. Recruiting Manager at the New York Public Library. Human Resource Management Certification, ILR School, Cornell University. BA in Psychology, Minor in Anthropology, Hartwick College.

Mustafa Shabib
Chief Technology Officer

Senior engineer at Amazon. Partner and technical director at We Are Mammoth. BA in Computer Science from Northwestern University.

Anna-Christina Douglas
Chief Marketing Officer

VP of Product Marketing at Yahoo. Head of Product Marketing at Dropbox. Product Marketing Manager at YouTube, Google. BS in Mechanical Engineering: Product Design and MS in Management Science and Engineering from Stanford University. 

Rajesh Midha
Chief Product Officer

Chief Product Officer at ooVoo. VP at Pharmalytics. BS in Finance & Marketing from Lehigh University. MBA from Columbia University. 


Steve Shulman
Chairman, Quartet

A highly regarded leader in the healthcare industry, Steve is the former CEO of Magellan Health Services, Inc. (NASDAQ: MGLN). He spearheaded the company's successful turnaround and restructuring out of bankruptcy and diversification into the nation's foremost specialty health care management company. Steve also led Prudential Healthcare through its major turnaround while serving as the company's chairman, president and CEO, culminating in the company's successful sale to Aetna. Steve is a cofounder of Value Health, Inc., a NYSE managed-care company specializing in behavioral health and prescription drug benefits. Previously, he held leadership roles at CIGNA and Kaiser Permanente. Steve serves as the chairman of CareCentrix and as a director of Access MediQuip, Broadlane, Digital Insurance, HealthMarkets and HealthPlan Holdings. He received his bachelor's degree in economics and master's degree in health services administration from the State University of New York at Stony Brook.

Annie Lamont
Managing Partner, Oak HC/FT

Ann Lamont, Managing Partner, joined Oak in 1982 and served as General Partner from 1986 to 2006. She currently leads the healthcare and financial services technology teams at Oak. Annie currently serves on the Boards of Acculynk, Benefitfocus, Castlight Health, FreshBooks, Independent Living Systems, Precision for Medicine Holdings, Radisphere National Radiology Group and xG Health Solutions. Select prior investments include athenahealth, CareMedic Systems (acquired by Ingenix), CLARiENT (acquired by GE Healthcare), Health Dialog (acquired by British United Provident Association), PayFlex Systems (acquired by Aetna), PharMEDium Healthcare (acquired by CD&R), and Psychiatric Solutions. Annie also serves on the board of HCA Holdings and is a member of The Advisory Council for The Center for Financial Services Innovation (CFSI and JP Morgan Chase). Annie is ranked the number one healthcare investor on the Forbes Midas List. She has also served on the Executive Board of the National Venture Capital Association. Annie graduated from Stanford University with a BA in Political Science.

Arun Gupta
CEO & Founder, Quartet

Arun founded Quartet to transform the mental healthcare delivery system. Arun was previously a General Partner at Accretive, where he was part of the firm's highly successful company launch efforts. He worked with the founding team of Accolade, a pioneering company simplifying healthcare for large employers, and previously with Palantir Technologies, McKinsey & Company, and The World Bank in various roles. Arun has worked extensively to improve delivery systems through the use of modern technology and business process design. Arun received a Masters from the Harvard Kennedy School where he was a Reynolds Fellow for Social Entrepreneurship and graduated with honors from Duke University. He has been active in development efforts in India, including launching a social enterprise to improve value capture to farmers and creating a program within the Government of India to improve quality in the public healthcare delivery system.

Patrick J. Kennedy
Board Member

The Honorable Patrick J. Kennedy is a former member of the U.S. House of Representatives and the nation’s leading political voice on mental illness, addiction, and other brain diseases. During his 16-year career representing Rhode Island in Congress, he fought a national battle to end medical and societal discrimination against these illnesses, highlighted by his lead sponsorship of the Mental Health Parity and Addiction Equity Act of 2008--and his brave openness about his own health challenges.

Krishna Yeshwant
General Partner, GV

Dr. Krishna Yeshwant is a physician, programmer, and entrepreneur who has been working with GV since its inception. Prior to Google, Krishna helped start an electronic data interchange company that was acquired by Hewlett-Packard and a network security company that was acquired by Symantec. He also coauthored the business plan for Diagnostics For All, which won both the Harvard Business School and MIT $100K business plan competitions. Previously, Krishna published several book chapters and journal articles in the field of computer-guided surgery, completed research in tissue engineering, and developed and licensed multiple surgical devices. He has worked with the technology transfer offices of MIT, Harvard, and Massachusetts General Hospital. Krishna has a B.S. in computer science from Stanford University. He also earned an M.D. from Harvard Medical School, an MBA from Harvard Business School, and completed his residency at Brigham and Women's Hospital in Boston, MA where he continues to practice. 

Carl Byers
F-Prime Capital Partners, Observer

Carl Byers brings more than 15 years of experience in healthcare to his role as Venture Partner. Carl was on the founding team at athenahealth, Inc. (Nasdaq: ATHN), where he served as Chief Financial Officer from 1997 to 2010. At athenahealth, Carl was responsible for the company's finance, legal and corporate technology teams and served as a key advisor to the CEO as part of the Senior Leadership Team. When a private company, he built the company's financial systems and led seven rounds of equity and subordinated debt financing, raising more than $70 million to support the company's development. Carl led athenahealth's $96 million 2007 Initial Public Offering. In his tenure, he also held various operational roles at different times. Prior to the founding of athenahealth, Carl was a Senior Consultant in Booz, Allen & Hamilton's New York office, where he worked in the financial services and health insurance industries. Carl teaches entrepreneurial finance at Harvard's Kennedy School where he is an Adjunct Lecturer on Public Policy. Carl holds a B.A. from Wesleyan and is a graduate of the Harvard Kennedy School's Mid-Career Masters in Public Administration program.

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Quartet is headquartered in NYC with operations in California, Louisiana, Massachusetts, New Jersey, Pennsylvania, and Washington.

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Hear From The Experts

The rate of missed first appointments with a behavioral health specialist is much lower through Quartet, at just 15%, compared to the national average of 40%. In addition, emergency room visits appear to be declining for Quartet-supported patients.

Ezekiel J. Emanuel