HEP PORTFOLIO COMPANIES
Leadership
![]()
Dr. Mitchell Eisenberg
Chairman of the Board and CEO
Sheridan Holdings, Inc.
Dr. Eisenberg joined Sheridan in 1982 and has served as Chairman of the Board and CEO since 1994. Dr. Eisenberg completed his residency in Internal Medicine at New England Deaconess Hospital and his residency in Anesthesiology at Massachusetts General Hospital, both affiliated with Harvard Medical School.
![]()
Todd Fisher
Founder and CEO
MobileMD, Inc.
MobileMD provides a managed service health information exchange (HIE) that enables the direct connection and exchange of administrative and clinical information between hospitals and physicians via a SaaS platform. Todd’s experience in healthcare technology software development spans approximately 20 years. Previously, Todd was the Founder and CEO of IntraPrise Solutions, a custom software engineering and technology services firm.
![]()
![]()
Chuck Jett
CEO and President
Principal Pharmacy Group, Inc.
For more than 20 years, he has been a successful entrepreneur, investor, business founder and executive officer. From 2000 to 2008, Mr. Jett served as the Chairman, CEO and president of Emageon Inc., a public healthcare IT company.
![]()
Siva Namasivayam
Founder and Chief Executive Officer
SCIOinspire Corp.
SCIOinspire Corp. is a provider of healthcare cost-containment, revenue recovery, care management data analytics and business process optimization for payors and self-insured employers. Previously, Siva was the CEO of EDS/MphasiS Healthcare (Eldorado Computing) and Head of BPO - Americas for EDS/MphasiS.
![]()
Edward Stack
Chief Executive Officer
Behavioral Centers of America
Ed Stack has over 30 years of healthcare management experience. Prior to joining BCA, he was the founder and CEO of Behavioral Healthcare Corporation (“BHC”), a Welsh, Carson, Anderson & Stowe company. Under his leadership, BHC grew from six psychiatric hospitals in 1993 to 48 hospitals with net revenue of over $350 million.








