About Us

Barry Tanner founded PE GI Solutions (formerly Physicians Endoscopy) in July 1999 and has dedicated over 20 years to the growth and development of the company.  Currently, Barry shares responsibility for the company’s partnership development activities, strategic direction, and services development. Barry also shares in the day-to-day management and governance of several of the company’s partnered ASCs and practices.

Prior to joining PE GI Solutions, Barry Tanner founded and served as Chief Financial Officer at Navix Radiology Systems, Inc., a physician practice management company based in Miami, Florida.

Prior to founding Navix, Barry served as Chief Operating Officer of HealthInfusion, Inc. (NASDAQ – HINF), a Miami-based provider of home intravenous therapy services. Before joining HealthInfusion, he worked primarily in the financial services industry. Barry holds a Bachelor of Science in Accounting from Boston College.

David Young joined PE GI Solutions in June of 2018 and serves as President & Chief Executive Officer. David shares responsibility for PE GI Solutions’ strategic direction and service development, with primary responsibility of day-to-day management.

Prior to joining PE GI Solutions, David was Chief Operating Officer of Privia Health, Inc., a national physician practice management and medical group based in Virginia. There, he helped expand the group to over 2,000 providers and oversaw all day-to-day operations.

Before Privia Health, Inc., David was Chief Financial Officer and Interim President of Smile Brands, Inc., the largest provider of support services to general and multi-specialty dental groups in the United States.

David has also served as Senior Vice President of Operations for McKesson Specialty Health, an $8.7 billion division of McKesson Corporation. There, he led the delivery of provider-centric management service to specialty healthcare providers, patients, and payers. Prior to McKesson, David was Chief Financial Officer of US Oncology, one of the nation’s largest networks of community-based oncology providers. He was instrumental to the launch and rapid growth of the company’s pharmaceutical services division.

Originally from Scotland, David holds a Bachelor of Science degree in Accounting and received his MBA from the University of Strathclyde in Glasgow. He is a Chartered Financial Analyst, Certified Public Accountant, Chartered Accountant, and Corporate Treasurer.

Christina Morrison joined PE GI Solutions as Chief Financial Officer in April 2018. Prior to joining the company, Christina served as Senior Vice President of Finance at Aramark where she led Financial Planning & Analysis, Mergers & Acquisitions, treasury, and global shared services. She was also one of the leaders of Aramark’s 2013 IPO.

Previously, Christina served as Senior Vice President of Business and Financial Planning at Merck & Co., Inc., where her responsibilities included planning and budgeting responsibility for a company with over 50% of revenue generated outside the US. Prior to Merck, Christina was the Chief Financial Officer and Senior Vice President of Wyeth Pharmaceuticals, responsible for the global planning and reporting of the pharmaceutical division. In this role, she oversaw accounting and controls, audit and SEC reporting, finance team leadership, and was a member of the company’s Pharmaceutical Leadership Team, SAP Steering Committee implementing SAP globally, ex-US Pricing Committee, Capital Review Committee, and Pension Committee.

Christina began her career as an analyst at Alex. Brown & Sons, an investment bank, now Deutsche Bank, where she served in various management capacities in both the Mergers and Acquisitions and Health Care Groups for approximately 12 years.

Christina is also a member of several boards. She has been a Board member and member of the audit committee and the compensation committee of InVivo Therapeutics Holdings Corporation since June 2016. She is also Emeritus on the Board of the Tuck School of Business at Dartmouth College since 2012, and she is a Member and President of the Board of Angel Flight East since 2014. Most recently, she was named a Fellow of The Foundation for Health Smart Consumers in 2018.

Tara Hamburger, CPA, is the Executive Vice President of Finance at PE GI Solutions. She joined the company in April 2002 and has over 15 years of experience in finance and accounting. Tara oversees the entire financial management process and ensures that accounting procedures and reporting conforms to Generally Accepted Accounting Principles. Tara provides leadership and coordination of financial reporting, tax compliance, and budget management functions for PE GI Solutions, as well as PE GI Solutions’ partnered practices and centers.

From a corporate perspective, Tara also assists the CFO with monitoring the company’s debt structure and covenant compliance and provides critical financial insight and strategic support to the Senior Leadership Team. Tara’s key focus for her finance team is to provide timely and insightful financial analysis both to PE GI Solutions and PE GI Solutions’ partnering practices and centers.

Prior to joining PE GI Solutions, Tara worked in public accounting for three years with one of the largest international accounting firms, Deloitte, LLP, where she was promoted early to a senior level and successfully obtained her CPA license. During her tenure at Deloitte, LLP, Tara led audit engagements for both private and publicly traded companies in various industries.

Tara graduated magna cum laude from Villanova University with a bachelor’s degree in Accountancy.

Sharon Hohlfeld is the Vice President of Payer Contracting at PE GI Solutions. She has been with the company since 2005 and has over 25 years of experience in healthcare. Sharon oversees the payer contracting department, which is responsible for obtaining network agreements between PE GI Solutions’ partnered practices and centers and the insurance companies.

Sharon and her team lead the renegotiation of current agreements for existing practices and centers to increase revenue on an annual basis, along with spearheading the credentialing of all facilities with each carrier.

Sharon’s team works closely with the finance, billing, and operations departments to support the practices and ASCs and remains on top of the changing healthcare insurance industry to provide support and education to the practice and center physicians and staff.

Sharon holds a Bachelor of Arts in Sociology from Shippensburg University.

John Westby is the Vice President of Information Technology at PE GI Solutions. He joined the organization in December of 2019 with a senior executive background in global information technology. John has over 30 years of demonstrated success in directing all functions within IT, from strategic planning to transformational change to large scale delivery and operations.

John is experienced in organization transformation as well as digital strategy and planning across numerous business and technology domains, defining and leading shared services organizations in both internal and outsourced models. He has been successful in the establishment and management of shared service functions, global IT hubs, and diverse sourcing models.

Prior to joining PE GI Solutions, John was Associate Vice President and Divisional CIO for Merck & Co., responsible for delivery of the IT strategy, planning, and execution on the transformational and operational goals of Global Finance, Global Procurement, Global Human Resources, and Global Facilities Management functions. At Merck, John helped reposition IT as a valued business partner to deliver an operating model simplification and improvement with annual operating expense savings exceeding $60M.

John holds a Bachelor of Science in Business and Decision Sciences from Indiana University Bloomington.