THE IMA GROUP - Key Persons


Dana Poff

Job Titles:
  • Executive Vice President, Clinical Research
  • in 2023 As Executive Vice President of Clinical Research
Bringing over 30 years of clinical research experience with CROs and service providers, Dana joined IMA in 2023 as Executive Vice President of Clinical Research. Having held multiple leadership roles in operations, project management and strategic partnering at ICON and Teckro, Dana's broad therapeutic experience, operational delivery expertise and success at building organizations will further strengthen IMA.

David C. Pulver - CEO, Chairman, Founder

Job Titles:
  • CEO
  • Executive Chairman
  • Founder
David C. Pulver, MD, CEO and Founder of The IMA Group, is certified by the American Board of Internal Medicine and American Board of Addiction Medicine and serves as Clinical Assistant Professor of Medicine at New York Medical College. Since founding IMA thirty years ago, Dr. Pulver has overseen the growth of the company from a single office to a network of more than ninety offices in twenty states and the District of Columbia. He received his MD degree from New York Medical College in 1975.

Erica Stirling - Chief Compliance Officer, Chief Legal Officer

Job Titles:
  • Chief Compliance Officer
  • General Counsel
  • Group in 2021 As Its General Counsel
Erica joined the IMA Group in 2021 as its General Counsel with extensive experience working in the healthcare industry. Prior to joining IMA, she worked for a number of healthcare organizations including the American Diabetes Association, Children's National Hospital and Baxter Healthcare. In her role, Erica oversees the IMA Group's legal affairs. Erica earned a B.A. from the University of Washington and her J.D. from Seattle University School of Law.

Laura Norris

Job Titles:
  • in 2021 As Vice President
  • Vice President, Payer Services
Laura Norris joined IMA in 2021 as Vice President of Payer Services, bringing extensive experience in IT systems and operations for commercial and government insurance programs. Prior to joining IMA, Laura spent over 25 years working for BlueCross/BlueShield and its affiliates, where she held executive leadership positions dedicated to innovation and operational excellence, focusing on improving customer experience and quality of care. She has had in-depth experience with business and technical transformations, including the integration of complex acquisitions. At IMA, Laura is responsible for the strategic and day to day operational direction for the Payer Services Division. As such, she will support the evaluations, screening, and case management needs of insurance carriers, TPAs, employers and public entities. Laura holds a Bachelor of Science Degree in Information Technology from State University of New York at Plattsburg.

Lisa A. Letarte

Lisa joined IMA in 2019 and comes to IMA with over 25 years of experience in human resources and extensive experience in compliance, employment law and mergers and acquisitions. In her HR role, Lisa oversees employee benefits, payroll, employee relations and talent acquisition for all IMA affiliates. Lisa attended the United States Military Academy at West Point and Seattle University School of Law. As Chief Compliance Officer, Lisa is responsible for the IMA Corporate Compliance program.

Mark I. Weinberger - CEO, President

Job Titles:
  • CEO
  • President
Dr. Weinberger oversees the strategic direction, expansion, and day-to-day operations of the Company. A trained and licensed clinical psychologist and epidemiologist, Dr. Weinberger runs the company from a clinical perspective focused on quality. Under his leadership, IMA has experienced significant expansion in geographic footprint and service offering, both organically and through acquisitions. Dr. Weinberger earned his bachelor's degree from Boston University, MS and PhD degrees in Clinical Psychology from the University of Massachusetts Amherst and his MPH in epidemiology from New York Medical College. Dr. Weinberger has completed several advanced graduate certificates in finance, management, and mergers and acquisitions from the Harvard Business School Online, Harvard's Extension School and The London School of Economics and Political Science. He serves as Clinical Instructor of Psychology in Psychiatry at Weill Cornell Medical College.

Michael Hirsch - CIO

Job Titles:
  • Chief Information Officer
Michael joined IMA in 2021, bringing with him nearly 20 years of experience in strategic IT leadership and management. Prior to IMA, Michael was a consultant with SMC Partners, a healthcare systems consulting company and was responsible for IT at two private equity backed healthcare businesses. Earlier in his career, he was a systems engineer responsible for software development for healthcare related technology platforms. Michael currently manages all IT operations and strategy. Michael received his Bachelor of Science in Computer Science from the State University of New York.

Michael Koenig

Job Titles:
  • Chief Information Security & Technology Officer
Michael joined IMA in 2010. Michael has over 20 years of software and system development experience. Michael has experience mentoring and building software departments for several industries, including Healthcare, Automotive, Environmental, Networking, Pharmaceutical and Financial. He received his Bachelor of Science in Mathematics in 1985 from SUNY Oneonta and completed a one-year degree in computer science at Hofstra University. His responsibilities include overseeing IMA's entire IT proprietary platform and initiatives.

Rob Snow

Job Titles:
  • Senior Vice President, Sales
Rob oversees all sales, account management, and marketing for The IMA Group. Rob has been working in the Managed Care industry for over 22 years providing solutions along nearly all product lines. He previously worked for Paradigm Solutions in a sales leadership role and Genex Services in both individual contributor and sales leadership roles. Rob graduated from Miami University in Ohio and now resides in Cleveland, Ohio with his wife and two sons. Beyond his professional life, Rob is also very involved in the developmental disability community.

Sara Mulick

Job Titles:
  • Senior Vice President of Sales
  • Group in 2023 As Its Senior Vice President of Sales
Sara joined the IMA Group in 2023 as its Senior Vice President of Sales. Sara spearheads the expansion of the company's Evaluation Services division which provides workers' compensation, liability, and disability IME's, case management services, fitness for duty/pre-employment evaluations, medical/psychological/ancillary exams, and various occupational health services. Before joining The IMA Group, Sara was SVP of Sales for One Call, one the nation's largest care coordinators of ancillary services for the workers' compensation industry. Mulick is also active in leading industry associations and has served as the president and Board Member of the Association of Insurance Professionals for nearly 10 years.

Tim Weaver

Job Titles:
  • Senior Vice President, Government Services
Tim joined IMA in 2019. Prior to joining IMA, Tim served as Regional Vice President of Operations at Fresenius Medical Care North America, a healthcare company focused on people with renal and other chronic conditions. He oversees the operation of IMA's 90+ medical offices as well our operations center in Albany. Tim earned a bachelor's degree from Eastern Michigan University and an MBA from Thunderbird School of Global Management.

Victor Cohen - CFO

Job Titles:
  • Chief Financial Officer
With extensive experience as a CFO of private equity backed healthcare and healthcare service businesses, Victor has broad management, corporate development and financial expertise. Prior to his work as a CFO, Victor was a private equity investor with Vestar Capital and Capital Z. Earlier in his career, he helped oversee mergers and acquisitions at Assurant and worked at JP Morgan. Victor earned a B.S. from Lehigh University and an MBA from NYU's Stern School of Business. Joining IMA in 2019, he currently manages all financial operations.