Meet Our Leadership Team

The Healthmap team is comprised of a unique blend of clinical and patient services specialists, and technology and data analytics experts. We are led by proven senior executives, with valuable guidance from our Board of Directors and Advisory Group, who are respected healthcare industry leaders.   

Joe Vattamattam

As Chief Executive Officer, Joe is responsible for defining and realizing the strategic vision and product suite for Healthmap. In his role, Joe is constantly seeking data gaps in the healthcare delivery system. As Healthmap bridges those gaps, he has a passion for identifying opportunities to use that data to enrich the quality of care delivered and compress the cost of care, all while keeping the patient’s experience a top priority.

Joe has broad and deep experience in developing, underwriting, pricing, and managing value creating healthcare programs across multiple niches within healthcare. Joe was critical to driving organic growth, product development, acquisitions and business process improvement during his tenure as VP, Medical Economics at CareCentrix and Director, Health Services at WellCare Health Plans. Joe serves as a Director on the board of Heritage Property and Casualty Insurance (NYSE: HRTG). He earned his undergraduate degree in Mathematics from the University of Florida and his MBA from Georgetown University.

Andrew Wall


As Chief Operating Officer, Andrew is responsible for Healthmap’s population health and technology-enabled services, as well as company operations. Andrew brings a blend of valuable experience to Healthmap, having run growth businesses, built organizations and developed senior leaders throughout his career. Andrew also drives the company’s innovation efforts as SVP of Product, helping payors, providers and self-insured companies manage costs, while ensuring their populations receive the highest quality healthcare services.

Andrew brings years of diverse healthcare and technology industry experience with McKesson, Kaiser Permanente, Deloitte Consulting and Workday, having created innovative technology solutions for Health Plans, Hospital Systems, Providers and Medical Device Manufacturers, including a first-of-its-kind health information exchange. Andrew holds a M.S. degree from Columbia University and a B.S. degree from the Florida State University.

Amit Johnsingh, MD

Dr. Johnsingh is a practicing Internist and Nephrologist with 15 years of experience, trained at Brown University, and is a Medical Director of Home Modalities at DaVita Dialysis.  He is a member of Alpha Omega Alpha medical honor society, serves on the Board of Directors of St. Joseph's-Baptist Health and is the President of Medical Staff of South Florida Baptist Hospital. He has a passionate interest in population health management within large and small health care delivery systems.

Dr. Elizabeth Prence

As Chief Quality Officer, Liz is responsible for the clinical validity of Healthmap’s products. She also guides the activities of Healthmap’s Scientific Advisory Board in the development of clinical algorithms, such as those applicable to the identification and treatment of chronically ill patients. Additionally, Liz applies her industry expertise in the areas of technology assessment, clinical utility demonstration, test utilization management, medical coverage policies, and laboratory-focused governmental regulations.

Liz brings a broad, unique perspective to the laboratory segment of health care, as she is board-certified in both genetics and clinical chemistry, is a Fellow of the American College of Medical Genetics and Genomics, and has over 35 years of experience in commercial, academic, and non-profit settings. She has held a variety of roles in which she led the efforts of large, cross functional groups to drive organic growth through provision of high quality care. Her commercial experience includes over 11 years at Quest Diagnostics, and her academic experience includes faculty appointments at Harvard Medical School, Massachusetts General Hospital, Brandeis University, and the University of Pittsburgh, Graduate School of Public Health.

Kisha Thompson

As Vice President of Human Resources, Kisha is responsible for providing strategic leadership and direction on all facets of HR management, as it relates to organizational development, performance management, recruiting and staffing, compensation and benefits, and employment law. Kisha applies her drive and experience to re-engineer processes and develop new procedures to maximize efficiency.

Having worked in the healthcare industry for the past 5 years, Kisha served as Head of Human Resources for Health Integrated and utilizes that knowledge to align the organization and accelerate Healthmap Solutions to the next level. She is an active member of SHRM, HR Tampa, and strives to stay current on all HR trends. Kisha holds a B.S. degree from the University of Florida.


Steve Shulman

Mr. Shulman serves as managing partner of Shulman Family Ventures, a private equity firm since 2008. He is the former chairman and chief executive officer of Magellan Health Services (NASDAQ:MGLN), where he spearheaded the company’s successful turnaround, restructuring out of bankruptcy, and diversification into the nation’s foremost specialty healthcare managed care company. He 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 was also the co-founder of Value Health, Inc. (a NYSE) managed care company specializing in behavioral health and prescription drug benefit management.

Steve currently serves as the Chairman of the Board of CareCentrix (privately held post-acute managed care company) and Quartet (privately held technology company focused on the integration of behavioral and physical medicine). He also currently serves as a director of VillageMD (privately held primary care medical management company), MedImpact (largest privately held prescription drug benefits management company-PBM), Healthmarkets (privately held healthcare distribution and specialty insurance company) and Facet Technologies (privately held OEM of lancets and lancing devices for diabetics).

Steve also served as Chairman of the Board of R1 (NASDAQ) healthcare revenue cycle management company, Health Management Associates (a NYSE listed national company that owned and operated 71 hospitals), where he successfully participated in a hostile takeover and engineered its sale to CHS for $7.6 B which closed in early 2014. Mr. Shulman previously founded Internet HealthCare Group, a venture fund focused on the intersection of early stage health care and technology companies. Prior to that Steve served in senior executive positions at Cigna and Kaiser. 

Mr. Shulman’s qualifications as a director include his extensive experience in the healthcare industry, including serving as chief executive of several large healthcare sector organizations and as operating partner for a healthcare private equity firm, and his roles as a director of several privately held companies.


Eric Reimer

Mr. Reimer was CEO of CareCentrix, the leading home health benefits management company, from 2008 – 2013. During his tenure the company tripled in size to nearly $1B in annual revenue. He previously was an officer at Magellan from 2003 – 2008 where he served in three distinct roles. First, Eric was the P&L owner for the Behavioral Health plan West division, a $400M division serving 20+ health plans. Then he was promoted to Chief Growth Officer of Magellan responsible for M&A, strategy, and sales. During this period, Eric spearheaded acquisition of two companies: National Imaging Associates and ICORE specialty pharmacy, and the company sold $1B of new business. Finally, he became CEO of National Imaging Associates, and the company grew from $40M of revenue to $350M of revenue in eighteen months under his leadership. Eric was co-founder of Internet Healthcare Group where he wrote the initial business plans for Lumenos and Digital Insurance, and has held executive positions at CIGNA, Prudential Healthcare and the Boston Consulting Group. He recently served as a Board member for Digital Insurance, prior to their successful sale to Fidelity National Financial, and Triad Healthcare, prior to their successful sale to Medsolutions.

Eric received a BA in Economics from Washington University in St. Louis and an MBA from the Wharton School of Business with a concentration in Strategy and Health Care Management.


Ari Benacerraf

Ari Benacerraf is a Partner and member of the Investment Committee at Five Arrows Capital Partners, the U.S. middle-market private equity business of Rothschild Merchant Banking.

Prior to FACP, Ari co-founded Diamond Castle where he was a Partner since 2005.  He played a leadership role as part of the Diamond Castle investment team and was a member of the firm’s Investment Committee.  Ari focused primarily on the healthcare sector while at Diamond Castle.  Representative investments in the healthcare sector included Managed Health Care Associates, Inc., Beacon Health Strategies, LLC, ValueOptions, Inc., Suture Express, Inc. and Healthmap Solutions, Inc.

From 2001 to 2004, Ari served as a Managing Director at DLJ Merchant Banking Partners, where he had been a Principal and a Vice President since 1995.  Prior to DLJ, Ari served as a Vice President at Bankers Trust Company from 1992 to 1995.  Previously he was an Associate at Banque Nationale de Paris. Ari currently serves on the board of Beacon Health Options, Suture Express, Multi-Color Corp. (Nasdaq: LABL) and Healthmap Solutions. Representative prior board appointments include: Managed Health Care Associates, Inc., NES Rental Holdings, Inc. and Catamount Energy Corporation.

Ari holds a BA in Chemistry from Franklin & Marshall College and an MBA from The Johnson School of Management of Cornell University.


Bruce Lucas

While known for his leadership and entrepreneurial skills, Mr. Lucas brings creativity and out-of-the-box thinking into making Heritage a best of breed company that is not only profitable but is built for the long term. Prior to Heritage, Mr. Lucas was CEO of Infinity Investment Funds and an attorney with Weil, Gotshal & Manges where he represented large institutional clients such as Enron and GE. Mr. Lucas graduated cum laude from Indiana University Law School with a B.A. and J.D., and was a Sigmund J. Beck Scholar. Mr. Lucas is most passionate about education based charities like the Pinellas Education Foundation and Step Up for Students as he feels education provided him with the opportunity to succeed and has been a major key to his success. He currently serves as a Board Member with the Pinellas Education Foundation. Outside of the office, Mr. Lucas enjoys exercising, golf, and travel.




Michael Langer

Michael Langer is a Managing Director at Five Arrows Capital Partners, the U.S. middle-market private equity business of Rothschild Merchant Banking.

Prior to FACP, Michael was a Partner at Diamond Castle which he joined in 2005. During his time at Diamond Castle, Michael worked on all of the firm’s healthcare investments, including Managed Health Care Associates, Beacon Health Strategies, Suture Express, ValueOptions and Healthmap Solutions.

Prior to joining Diamond Castle in 2005, Michael worked at DLJ Merchant Banking Partners. Previously, he was an Associate at Leonard Green & Partners and was an Analyst in the investment banking division at Deutsche Bank, in the Financial Sponsors & Leveraged Finance Group. Michael currently serves on the Board of Directors of the following companies: Beacon Health Options, The Stepping Stones Group, Healthmap Solutions and Suture Express. Michael is a former Director of Managed Health Care Associates.

Michael holds a BS, magna cum laude, from Boston College, where he graduated Beta Gamma Sigma, and an MBA, with honors, from The Wharton School of the University of Pennsylvania.

Our Advisors

Tom Gaffney

A cofounder of Sleep Management Solutions, Tom has more than 15 years of health-care experience working across the landscape of the alternate site industry, including DME, Home Infusion, and most recently as an owner and operator of DME and sleep lab operations. Based on an understanding of the cost drivers related to sleep services, as well as the growth in this area of healthcare, Tom developed a strategy to deliver low-cost and high-quality home-based sleep testing and therapy-management solutions for patients, thus, creating a full-service sleep-management program for payors to help manage their sleep service spend and trend. Sleep Management Solutions, the first sleep-benefits management company in the United States, was established in 2006 and has grown to serve several local and national health plans. The company became a wholly owned subsidiary of CareCentrix in 2010.

Tom holds a master’s degree in education from Springfield College in Massachusetts, where he also received his bachelor’s degree.


Andrew D. Sherman

Mr. Sherman is currently the Chief Development Officer for Women's Care Enterprises, a leading multi-specialty provider of women's health services. Mr. Sherman also currently serves on the Board of KBL Merger Corp IV (NASDAQ:KBLM), a healthcare-focused special purpose acquisition corporation fund that went public in 2017 and Kolea Healthcare, a privately held home health company. Prior to Women's Care Enterprises, Mr. Sherman led corporate development for Unified Physician Management and previously was a Partner at DCH Partners, a healthcare-focused private equity firm focused on transaction development.

Mr. Sherman brings 25 years in investment banking, M&A and private equity to the advisory board having completed over 100 M&A and private equity transactions including over $35 billion in M&A transactions. Mr. Sherman holds a B.S. in Economics and Finance from The Wharton School of Business, a B.A. in International Relations from the University of Pennsylvania, and an M.B.A. with Distinction from The Harvard Graduate School of Business Administration.


Joel B. Forman


Dr Forman is a practicing general cardiologist with interests in stress testing, echocardiography, lipidology and cardiovascular wellness.  He attended medical school at The Ohio State University and completed his internal medicine residency at Emory University with subsequent cardiovascular disease training at The Medical College of Virginia/ Virginia Commonwealth University.  Along with advisory and consultative roles, he comes to Healthmap with years of patient centered experience.    A primary goal is using the knowledge and tools of a busy clinician applied to technology and data, thereby promoting wellness in an even larger population of at risk individuals.