Executive Leadership

Lisa Firestone

Lisa-FirestoneLisa M. Firestone, MHSA President and Owner of Managed Care Advisors, Inc. has been involved in the healthcare industry for more than 30 years gaining recognition for her expertise in the areas of workers’ compensation, disability management and employee benefit program development, management, evaluation and strategic planning. Ms. Firestone has been actively involved in the evolution of workers’ compensation case management and disability management programs, most recently focusing on the federal workers’ compensation and disability systems.

Ms. Firestone started her career in hospital administration at a large, university-based medical center, followed by more than six years as a health benefits consultant and practice manager with The Martin E. Segal Company and American International Healthcare. Prior to founding MCA in 1997, Ms. Firestone served as Vice President and Principal with Managed Care Options.

Ms. Firestone serves on the Governing Board of Women Impacting Public Policy (WIPP) and is a Co-Chair of the WIPP Procurement Committee. She is also a member of the WBENC Certification Committee and an at-large member of Women President’s Organization (WPO). Ms. Firestone was named the 2011 VIP (Victory in Procurement) Teaming Government Contractor of the Year by American Express Open.

Ms. Firestone has an undergraduate degree from the University of Delaware and a Masters degree in Health Services Administration from George Washington University.

Susan Kappel — Senior Vice President

Susan-KappelSusan B. Kappel, MSHA, Senior Vice President of Managed Care Advisors, Inc., has oversight responsibility for MCA’s consulting practice and client services and provides direct consulting services. Ms. Kappel has been working in the benefits consulting industry for almost 20 years and has been with MCA since its inception in 1997. With over 25 years of experience in managed health care, development and operations for governmental entities, employers, payers and providers, Ms. Kappel’s experience encompass virtually all aspects of health care including managed care program operations, employee benefits, workers’ compensation, provider network development, evaluation, and provider relations.

Prior to her career in consulting, Ms. Kappel worked several years inpatient care, followed by more than eight years as Director of Provider Relations for a national managed care plan.

Ms. Kappel has an undergraduate degree in Health Care Policy from the University of Maryland and a Masters of Science in Health Administration from the Medical College of Virginia.

Daryl Whitman – Chief Operating Officer and Senior Vice President

Daryl Whitman Headshot 2015Daryl Whitman is the Chief Operating Officer and Senior Vice President of Managed Care Advisors, Inc., and oversees MCA’s Human Resources, IT, Analytics, and Administration functions. Mr. Whitman also plays an active role in strategic and budget planning. Previously, he was a Senior Consultant at MCA from 2004 to 2007 and rejoined the organization in the fall of 2015. He has spent the majority of his career primarily in healthcare, managed care, and consulting. Prior to joining MCA, he held senior operations roles at Hanger, Inc. and UnitedHealthcare.

Mr. Whitman has an undergraduate degree in Business Administration from the University of Delaware and a Masters in Business Administration from Loyola University Maryland.

Barbara DeGray — Vice President, Case Management

Barbara-DeGrayBarbara DeGray, RN,  is the Vice President of Case Management at Managed Care Advisors, Inc.

Ms. DeGray holds an undergraduate degree in Nursing from Georgetown University and a Masters of Business Administration degree in Health Administration from the University of Miami. Also, she is a Certified Rehabilitation Registered Nurse (CRRN) and holds a Certificate in Health Care Administration and a Certificate in Quality Assurance and Utilization Review.


Dr. David Sack — Chief Medical Officer

Dr. David Sack MD, MS, FACOEM is the Chief Medical Office of Managed Care Advisors, Inc. Dr. Sack is a board certified Occupational Medicine Physician by the American Board of Preventive Medicine. His expertise and experience are grounded in a 25-year career in the US Navy as an occupational medicine physician in which he held positions at the clinical, program management,and leadership levels – serving a worker population that included both active duty military personnel and civilian federal workers in shipyards and other industrial activities.  In his current role, Dr. Sack maintains responsibility for both MCA’s Quality Assurance and Medical Review Physician Departments.

Dr. Sack received his Bachelor’s degree from Pennsylvania State University, his medical degree from Jefferson Medical College of Thomas Jefferson University in Philadelphia, and a Master of Science degree in Environmental Health from the University of Cincinnati.  He completed residency training in occupational medicine at the University of Cincinnati and is board certified in this specialty.  He is a Fellow of the American College of Occupational and Environmental Medicine.



Jon Jennelle, CPA, CGMA – Controller

Jon Jennelle Headshot - Gray v2Jonathan Jennelle is the Controller of Managed Care Advisors, Inc. and is responsible for the company’s overall financial management. He brings over 20 years of experience working with small to mid-sized companies in the construction, aerospace, technology and healthcare industries. His business knowledge extends to the areas of accounting and taxation, business development, government contracting, and business consulting.

Mr. Jennelle earned a Bachelor of Science in Accounting from Virginia Tech and is a Certified Public Accountant and Chartered Global Management Accountant.