Management Team

Jamie Macdonald

Chief Executive Officer

Jamie Macdonald is Chief Executive Officer of Parexel. He has nearly 25 years of experience in leading global biopharmaceutical services companies.

Prior to joining Parexel, Mr. Macdonald served as CEO of INC Research, now known as Syneos Health, from January 2013 through September 2016, where he led the company through a successful Initial Public Offering in 2014.

Mr. Macdonald also served as INC’s Chief Operating Officer from July 2011 through December 2012, and previously held several leadership positions in the biopharmaceutical services industry, including Senior Vice President and Head of Global Project Management at Quintiles, now known as IQVIA. Prior to this, he held various senior operational and finance roles at Quintiles. He currently serves on the Board of Directors for the Association of Clinical Research Organizations (ACRO), having previously served as its Chairman in 2015.

Mr. Macdonald’s recent experience also includes serving as Chairman of the Board for Certara, a drug development consultancy with solutions spanning discovery, preclinical and clinical drug development, from 2017 to 2018.

Mr. Macdonald began his career in the pharmaceutical industry with Syntex Corporation (acquired by Roche Holdings, Inc.). A native of Scotland, he holds a B.A. in Economics from Heriot-Watt University in Edinburgh, Scotland and is a qualified Chartered Management Accountant (ACMA).

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Peyton Howell

Executive Vice President, Chief Commercial & Strategy Officer

Peyton Howell is Executive Vice President and Chief Commercial and Strategy Officer at Parexel.  She has over 25 years of leadership experience in the healthcare industry, successfully delivering solutions that meet the needs of customers.

Prior to joining Parexel, Ms. Howell held several leadership positions with AmerisourceBergen, most recently as Executive Vice President and President, Health Systems and Specialty Care Solutions.  In that role, Ms. Howell led a business unit with market-leading share of specialty and biotech products and solutions for physicians, health systems and specialty pharmacy customers.

Previously, Ms. Howell was Executive Vice President and President, Global Sourcing and Manufacturer Relations with AmerisourceBergen, and led pharmaceutical manufacturer strategy and relationships for the company, including multi-billion-dollar sourcing activities. As part of this role, she led the creation of a new sourcing entity in Bern, Switzerland to support global manufacturer relations.

Ms. Howell also previously served as President, Consulting Services for AmerisourceBergen, managing a portfolio of industry-leading companies focused on partnering with pharmaceutical manufacturers to achieve success with market access, reimbursement, specialty services and product commercialization.  In addition, she was a founder of Lash Group and served as its President for 10 years after the company was acquired by AmerisourceBergen in 1998.

Ms. Howell is a nationally-recognized speaker and author on health policy and market access issues, and started her career in hospitals, including Ohio State Medical Center, where she worked to address reimbursement challenges for new, emerging technologies. Ms. Howell is also a member of the Healthcare Financial Management Association (HFMA), American College of Healthcare Executives (ACHE) and the Academy of Managed Care Pharmacy (AMCP).  Her honors include being recognized as the 2004 Charlotte, North Carolina Businesswoman of the Year and in 2013 she received a Distinguished Alumni Award from The Ohio State University.

Ms. Howell holds a Master in Health Administration (MHA) from The Ohio State University and a BA from the University of Illinois.

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Greg Rush

Executive Vice President, Chief Financial Officer

Greg Rush is Executive Vice President and Chief Financial Officer at Parexel and brings to the Company more than 25 years of experience leading global financial operations within the CRO and service industries.

Prior to joining Parexel, Mr. Rush served as Executive Vice President and Chief Financial Officer of Syneos Health, Inc. (formerly known as INC Research Holdings, Inc.) from August 2013 to February 2018. In that role, Mr. Rush oversaw the Company’s global financial operations, including Finance, Accounting, Tax, Treasury, Budgeting, M&A and Financial Planning, as well as all Information Technology functions.

Previously, Mr. Rush was Senior Vice President and CFO of Tekelec, a leading high-tech solutions and service provider that was acquired by Oracle. Mr. Rush also held positions of increasing responsibility at Siebel Systems, Quintiles Transnational Holdings, PricewaterhouseCoopers and Ernst & Young. In his roles, Mr. Rush has had repeated success in developing innovative financial management strategies, strong capital structures, high levels of operational support and sound corporate governance. He has experience in both private and public capital markets, completing more than 50 debt and equity financing transactions, including private equity transactions, initial public offerings (IPOs) and secondary offerings.

Mr. Rush is a Certified Public Accountant and holds a Bachelor of Science in Business Administration and a Master of Accounting from the University of North Carolina at Chapel Hill.

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John Bell

Executive Vice President and Chief Quality Officer

John Bell is Executive Vice President and Chief Quality Officer and has been with Parexel for over three decades in various roles. In his current role, Mr. Bell leads and oversees quality strategy and initiatives across the organization, and provides oversight and direction to the Quality organization globally.

Mr. Bell has played various, and progressively more senior, roles in Quality including leading Parexel’s Quality organization since 2006. Apart from more traditional Quality functions, such as Quality Management and Quality Assurance, Mr. Bell has also established and managed quality-related groups during his tenure at Parexel.  These include Lean Six Sigma/Operational Excellence (inclusive of training program), Customer Advocacy (client survey and reporting), Data Analytics and Reporting (focused on predictive quality metrics), Data Protection and Privacy, Business Continuity, Training (inclusive of a Learning Management System), and Operational Risk Management. Prior to his current role, Mr. Bell served as Vice President, Head of Quality Management, Clinical Research Services. Previously, Mr. Bell also served as Senior Director, International Integration and Coordination (Early Phase), tasked with financial reporting and integrating new acquisitions. 

Mr. Bell is involved with several professional associations, including serving as a member of the ACRO Ethics and Regulatory Compliance Committee, Drug Information Association, and Research Quality Association (previously BARQA). Mr. Bell has published in a variety of peer-reviewed journals. 

Mr. Bell holds a Diploma in Research Quality Assurance from Anglia College, Cambridge, UK, Diploma, as well as a Bachelor of Social Science from the University of the Orange Free State, Bloemfontein, South Africa.

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Michael Crowley

Executive Vice President, Chief Administrative Officer and General Counsel

Mr. Crowley is Executive Vice President and General Counsel and Secretary of Parexel.  In this capacity, he is responsible for the Company's worldwide legal, risk management, ethics & compliance and corporate governance.  

Mr. Crowley brings to Parexel extensive commercial and corporate legal experience. He has provided counsel on a wide range of matters including commercial contracting, strategic alliances, corporate governance, mergers and acquisitions, compliance and ethics and intellectual property. Since joining Parexel in 2009, Mr. Crowley has held several key positions in the Legal & Risk Management organization, including most recently overseeing legal support for the Company’s commercial contracting and clinical operations organizations.  Prior to joining Parexel, Mr. Crowley was Vice President and General Counsel at Netezza Corporation, a publicly-traded technology company. Mr. Crowley was previously with CA, Inc. and Concord Communications, Inc.

Mr. Crowley received his J.D. degree from Northeastern University School of Law. He also holds a Bachelor of Arts degree in History from the University of Miami and a Master of Arts degree in European History from the University of Rhode Island.


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Gavin Nichols

Executive Vice President, Informatics and Information Technology

Gavin Nichols is Executive Vice President, Informatics and Information Technology at Parexel and brings more than 25 years of experience delivering technology solutions to meet the evolving demands of the pharmaceutical and healthcare sectors.
Prior to joining Parexel, Mr. Nichols served as Chief Information Officer and Executive Vice President of Technology at BioClinica. 

Previously, Mr. Nichols held various global leadership roles in technology, leading strategic and innovative transformations in the pharmaceutical and healthcare sectors. Most notably, his experience includes 11 years with Quintiles (now IQVIA), where he served as Vice President, Data/Analytics/Innovation IT and was instrumental in the creation of its Infosario technology suite.

Mr. Nichols also served as Vice President, Life Science, at Perspectum Diagnostics, as well as President, Technology and Software, at Cetara. His wide range of experience includes leading the delivery of data analytics, recruitment, wearables, electronic health records, genetics, consumer apps and trial management solutions. 

Mr. Nichols holds a Master of Business Administration from Bournemouth University and a Bachelor of Science from Open University. 

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Dr. Sy Pretorius

Executive Vice President, Chief Medical & Scientific Officer

Sy Pretorius is Executive Vice President, Chief Medical & Scientific Officer at Parexel and has been with Parexel for more than two decades in a variety of roles and countries. On a day-to-day basis, Sy collaborates closely with biopharmaceutical and medical device clients in designing and optimizing drug/device development strategies and plans, as well as finding, evaluating and purchasing assets. As a member of the Parexel executive leadership team, Sy is responsible for the overall leadership of a number of Parexel service lines & business units – these include Global Medical Services, Translational Medicine (includes Genomics, Modeling & Simulation and Biomarkers), Real World Data Services, Real World Evidence, Safety Services, the Patient Innovation Center, Regulatory Outsourcing and The Medical Affairs Company (Medical Science Liaisons).

Sy is absolutely passionate about drug development and leads several company-wide forums and initiatives focused on clinical trial innovation and further expanding Parexel’s capabilities and service offerings. Sy is a Medical Doctor (M.B.,Ch.B) with master’s degrees in Clinical Pharmacology (M.Med.Sc), Business Administration (MBA) and, most recently, in the Management of Drug Development (MS) from the University of Southern California (USC). Sy has and continues to publish and present extensively. In 2017, Sy was recognized as one of the top 100 most inspiring people in the pharma industry by PharmaVOICE magazine.

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We are always available for a conversation.


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