Our Team

On Call International – home to a team of experts with a commitment to service and professionalism.

Meet our team of travel assistance experts. From medical professionals to claims experts, we have the expertise to provide you with total peace of mind while traveling. Interested in joining our team? Visit our career opportunities.

Senior Leadership

Michael J. Kelly
Chief Executive Officer

Michael J. Kelly founded On Call International in 1995, with the vision of creating a global medical, travel and security assistance company that would deliver the highest quality services for business, leisure and academic travelers, anywhere in the world, 24/7, 365 days a year. On Call's rapid growth is due in large part to a relentless focus on developing customized programs that meet the very unique needs of our clients.

Prior to this venture, Mike was president of International SOS Assistance, as well as the chief executive officer of International Medical Care Ltd., a company that created and managed primary care clinics in Beijing and Moscow. Early in his career, he held senior positions in marketing and sales at American Express, where he played an integral role in managing the introduction of several new products, including the American Express Gift Cheque and the Travelers “Cheques for Two” product, along with enhancements to the company's Platinum and Gold Cards. Mike holds a Bachelor's Degree in Business from Manhattan College in New York City. In addition to his role as president and CEO of On Call International, he is a founding board member and former President of the U.S. Travel Insurance Association (UStiA). In his free time, Mike enjoys running, skiing and gardening.

Robert E. Wheeler, MD, FACEP
Chief Medical Officer

Dr. Robert Wheeler has served as the Chief Medical Officer for On Call International since October 2005. In his capacity as CMO, Dr. Wheeler, together with his team of four physicians and two nurse case managers, is responsible for the management of more than 10,000 medical cases worldwide each year. He is the past Chairperson for the Medical Committee of the International Assistance Group, an organization of more than 60 global medical and travel assistance companies. Dr. Wheeler received his medical degree from the University of Massachusetts Medical School, is Board certified in Emergency Medicine and Internal Medicine and is a Fellow of the American College of Emergency Physicians and the American Academy of Emergency Medicine.

Dr. Wheeler has more than three decades of experience in Emergency Medicine. He has also been involved in the practice of Cruise Ship Medicine, providing onboard medical care and cruise line medical consulting services, for more than 25 years. He is a founding member and past-Chairperson for the American College of Emergency Physicians Section on Cruise Ship and Maritime Medicine, an international group of physicians that works in partnership with the cruise industry to ensure the provision of quality shipboard medical services for cruise ship guests and crew members. Dr. Wheeler has developed and coordinated several educational programs for cruise ship doctors and nurses, highlighting a variety of cruise ship and travel medicine topics, including Norovirus outbreak prevention and mitigation. He has also authored chapters on cruise ship medicine in two popular travel medicine textbooks.

Dr. William Siegart
Medical Director

Dr. William Siegart joined On Call International in October 2013 as the company's Medical Director.

Dr. Siegart received his medical degree from New York College of Osteopathic Hospital in 1984 and completed an emergency medicine residency at Pontiac Osteopathic Hospital Emergency Trauma Center in 1987. He has worked as a full-time emergency physician for the last 27 years. For the past 11 years, Dr. Siegart was a partner with Exeter Emergency Physicians in Exeter, NH, and until November 2013, he served as Medical Director for Exeter Hospital's emergency department. During his tenure at Exeter Hospital, Dr. Siegart served as the Chair of the Peer Review Committee and Chair of the Professional Practice Evaluation Committee. Prior to his work in Exeter, Dr. Siegart was the Associate Medical Director and EMS Director at Southern NH Medical Center in Nashua, NH. Over the course of his career he has been active in education for medical students, nurses and EMTs. He was formerly a member of the New Hampshire EMS Medical Control Board and participated in the development and revision of evaluation and treatment protocols.

Dr. Siegart lives in Hampton, NH with his wife and two children. In his free time, he enjoys camping, hiking and outdoor adventure activities.

Scott Sanders
Vice President of Operations

Scott Sanders joined On Call International with an exemplary record of leading customer service and operations for mid-size and Fortune 500 companies. Prior to this position, Scott held the role of Site Director at Sykes Enterprises, Inc., the second largest business process outsourcer in the world. As Site Director, Scott was responsible for overseeing the operating environment and support services of AT&T. During his time with the company, Scott managed the third highest producing revenue site, out of 15 in the U.S. for 2009, and produced a gross profit of 35% annually in 2009, which generated $6 million. Previously, Scott served as the Contact Center Site Director for Florists' Transworld Delivery, Inc. (FTD), where he led the Little Rock Call Center, the largest FTD customer service and order processing center in North America. Scott was also the Area Vice President/General Manager for Metro One Communications and the Operations Manager at Emery Worldwide Airlines in New Hampshire.

Scott received a Bachelor of Science in Business Administration and Marketing from the School of Management at Boston University and a Master of Business Administration from Southern New Hampshire University.

Linda Gavin
Chief Financial Officer

As On Call International’s Chief Financial Officer, Linda Gavin brings more than twenty years of financial and accounting experience to On Call and is primarily responsible for the financial and accounting operations of the company. This includes production of financial reports, maintaining an adequate system of accounting records, and setting up a comprehensive set of controls and budgets designed to mitigate risk. She also ensures that reported results comply with standard accounting principles and ensures the accuracy of the company's reported financial results.

Gavin previously served as Director of Finance and Administration at Concordia Partners LLC where she directed all aspects of finance, accounting, budgeting, analysis, tax, and cash management for a $13.5 million direct marketing healthcare company. In addition, Gavin was responsible for the company's fixed assets, inventory, and risk mitigation. She also managed a twenty-person call center, and handled human resources and payroll for a fifty-person staff.

Past positions include Assistant Controller for Liberty Mutual Group where Gavin was responsible for leading the Cash Management Controls department. She also served as Liberty Mutual's Manager of Treasury Operations, managing the Accounts Payable and Employee Reimbursements departments.

Gavin is a CPA, received her MBA from the University of New Hampshire and holds a BA in Accounting from the University of Vermont.

Tom Davidson
Vice President, Sales and Marketing

As Vice President of Sales and Marketing, Tom Davidson focuses on expanding the company's sales operations while maintaining and increasing On Call's high level of customer satisfaction. He is also responsible for building and strengthening more direct relationships with corporations, educational institutions and other client groups.

Davidson brings more than eight years of experience in sales and management. Previously he served as Manager of Account Management at International SOS Assistance Inc. where he oversaw client communication before, during and after crises in India, Haiti, Chile, Egypt, Libya, Japan and New Zealand. Davidson acted as the logistics lead for Haiti operations and evacuee safety following extraction from Haiti. He was responsible for management of medical, security, aviation, and logistics team members based in Santo Domingo.

Other past positions include manager of the recruitment advertising department at Philadelphia Media Holdings where his responsibilities included managing sales and publication operations of more than 30 million dollars in ad revenue per year and an inside sales manager and regional operations manager for EchoStar Satellite L.L.C.

Davidson holds a BA in Mass Communications from York College of Pennsylvania.

Jennifer Brunelle
Director of Claims

Jennifer Brunelle, Director of Claims, joined On Call International in December 2000 as a Claims Supervisor. Jennifer also serves as HIPAA Compliance Officer. She was promoted to Finance Manager in February of 2004, assuming responsibility for supervising accounts payable and receivables, maintaining accurate and timely invoicing, and managing several trust accounts and seven Bank of America accounts. In April 2006, Jennifer earned the title of Director of Claims. She is responsible for interpreting insurance benefits for many different policies and terms and conditions for various memberships. She is also responsible for state reporting compliance. Jennifer holds a producer's license for P&C in all 50 states.

Jennifer came to On Call from Health Plan Services in Merrimack, NH, where she was initially a claims supervisor and was quickly promoted to policy trainer for major medical policies such as United HealthCare and Blue Cross Blue Shield. She remained at Health Plan Services for 10 years, training and supervising claims adjudication with a concentration on EDI submissions, HIPAA Compliance, auto adjudication and performing audits on large dollar hospital bills.

Dennis Oliver
Director of Information Technology

As Director of Information Technology, Dennis Oliver is responsible for all aspects of information technology management and control, including supervision of information technology employees; budget preparation and management; recommendations for technical acquisitions; and development of guidelines, standards and procedures. He is also in charge of strategic planning, tactical action, and operational decision-making to fulfill the mission of the IT department.

Dennis has a degree from New England Institute of Technology with a specialization in computer programming and has been working in the computer and telecommunication field for more than twenty years. During this time, he has held a number of leadership positions working as a programmer, a teacher/trainer, a network/system engineer, an architect/designer, an information systems manager, a Director of Managed Services, and a consultant.

Prior to becoming a full time employee in September of 2011, Oliver consulted with On Call International and was the chief architect for our virtualized and redundant systems.

Sales & Marketing

Diane Hanlon
Regional Sales Director

Diane Hanlon joined On Call in October 2013 as Regional Sales Director, where she focuses on helping businesses and universities reduce risk for traveling employees, expatriates, students and faculty. Diane has more than 17 years' experience and achievement in Fortune 500 B2B sales, account management and contract management. Prior to joining On Call, Diane served as Area Sales Manager for Strategic Commercial Accounts for Enterprise Holdings (operating Enterprise and National Car Rental). Diane was promoted to the Sales Management position from a Senior Sales Account Executive position, and prior to that, worked as an Account Executive. Diane has received numerous professional accolades for her work, including two Exceptional Achievement Awards.

Diane holds a BS in Business Administration from Kutztown University. In her spare time, she enjoys running and spending time with her husband and two children.

Kelly Clement
Regional Sales Director

Kelly Clement joined On Call in January 2014 as Regional Sales Director, where she focuses on helping businesses and universities implement customized risk management programs for traveling employees, expatriates, students and faculty. Kelly has more than 11 years of experience in the travel and hospitality industry. Prior to joining On Call, Kelly served as Regional Director of Sales for FCm Travel Solutions where she specialized in travel management solutions for medium-sized companies.

Kelly holds a BA in Marketing from Ohio University. In her spare time, she enjoys soccer and traveling the world.

Michelle Shelton
Director of Marketing

Michelle Shelton, Director of Marketing, focuses on strategies to grow the company's brand awareness through digital and traditional marketing.

Previously, Michelle served as the company's Marketing Manager, where she was responsible for On Call's retail product development/sales, brand management, and website development. Michelle joined On Call's Operations team in 2004, where handling special projects for company president and CEO Michael Kelly. In 2006, she transitioned into the position of sales administrator, supporting the company's clients. She began assuming multiple marketing prior to being promoted to Marketing Manager.

Michelle also serves on the U.S. Travel Insurance Association's (USTIA) Technology Committee and holds a Bachelor's Degree in French from Middle Tennessee State University. In her spare time, Michelle enjoys reading and yoga.

Ariel Wiley
Senior Account Manager

Ariel Wiley joined On Call in May of 2011 as an Account Manager for existing and on-coming academic clients and took over management of the corporate and NGO sectors in January of 2013. Ariel is responsible for implementation and onboarding of new clients, ongoing support, education and renewal of existing clients as well as online support for Searchlight, On Call's proprietary online educational portal and travel risk management hub with travel tracking system. In addition to her account management responsibilities, Ariel contributes to inter-departmental process and protocol development and improvements.

Prior to joining On Call, Ariel worked at International SOS as a Scholastic Program Coordinator and directly supported the Academic Sales and Program Director. She was promoted to Scholastic and Corporate Account Manager in June of 2010 and managed a diverse group of corporate and academic accounts. She was responsible for day to day client support and managing annual renewal business.

In her free time, Ariel enjoys traveling and spending time outdoors hiking and camping.

Melissa Tollie (Zahensky)
Manager of Key Accounts

Melissa Tollie (née Zahensky) joined On Call International in June 2006 as an Assistance Coordinator, helping customers traveling around the globe with emergency medical and travel assistance services. Two years later, Melissa joined On Call's growing marketing department as the Marketing Coordinator, conducting market research, developing press releases, as well as planning and coordinating tradeshows and conferences. She was instrumental in creating On Call's proprietary worldwide medical provider database.

In 2010, Melissa transitioned into a sales and account management role, assisting the sales team in maintaining long-term business relationships with existing clients and developing relationships with new clients. Melissa was appointed Manager of Key Accounts in 2012. As Manager of Key Accounts, Melissa works hand-in-hand with clients, supporting their needs and helping them to develop and execute their travel assistance programs.

Melissa holds a BA in Business Administration with a concentration in Marketing and Spanish from the University of New Hampshire. In her spare time, Melissa enjoys DIY design, traveling and cooking.

Kristen O'Neil
Client Relationship Manager

Kristen O'Neil, Client Relationship Manager, joined On Call International in March of 2007.

Kristen spent more than five years in On Call's Global Response Center, starting as an Assistance Coordinator where she handled travel and medical assistance cases. Kristen transitioned to Senior Assistance Coordinator in 2010, handling urgent or escalated medical or political evacuation cases. In 2011, Kristen was promoted to Operations Supervisor, where she managed a team of Assistance Coordinators, conducting biweekly reviews and overseeing daily case activity. Kristen was promoted to Client Relationship Manager in 2012 and serves as a liaison between On Call International and its clients.

Kristen attended Keene State College with a major in Communications and previously worked for the New England Patriots. In her spare time, Kristen enjoys hiking, running and spending time with her son.


Melanie Foley
Director of Operations

Melanie Foley, Director of Operations, joined On Call International in November 2003 as an Assistance Coordinator. She has worked in various roles within the company since then, serving as Account Executive for two years and as Manager of Training for six years. While managing new hire orientation and training as well as delivering ongoing staff education and development, Melanie implemented quarterly technical aptitude testing. She also organized and headed a Quality Committee to monitor all aspects of service delivery. In her current position, Melanie is responsible for coaching the supervisory staff and managing daily Operations activity, ensuring the company maintains quality and performance standards.

Melanie holds a Bachelor of Arts in Spanish from Providence College.

Kristin Toth
Training & Quality Manager

Kristin Toth, Training and Quality Manager, has developed a unique skill set through her 7+ years at On Call International. From political evacuations in the Middle East to medical evacuations from Mount Everest, each day presents itself with a new challenge. After spending five years as a supervisor in the Global Response Center, Kristin transitioned to her current position. In addition to training new employees, she manages On Call's Quality Team and works closely with all Operations staff ensure their career education is an ongoing and enjoyable experience.

Kristin attended Keene State College, where she majored in Historic Preservation and Conservation.

Finance & Claims

Shannon M. Mitoulas
Accounting Manager

Shannon Mitoulas joined On Call in June of 2012 as the Accounting Manager. Shannon is responsible for the timely and accurate completion of the month-end close, monthly financial reporting for individual company departments as well as revenue analysis. Prior to joining On Call, Shannon worked as the Assistant Corporate Controller at Emerson Ecologics for five years, where she improved the monthly financial reporting package by creating custom reports, led a financial merger and managed the accounting department staff. Previously, Shannon worked at Axsys Technologies as the Accounting Manager. Shannon has an extensive background in corporate and general accounting, cost accounting, mergers and conversions, project management, process development and regulatory and compliance reporting.

Shannon holds a BS in Accounting and Finance from Southern New Hampshire University. In her spare time, she enjoys spending time with her family and riding her motorcycle.

Tom Keller
Claims Manager

Thomas Keller, Claims Manager, joined On Call International in December 1999 as an Assistance Coordinator. He was promoted to Operations Supervisor in the summer of 2002 and in January 2003, he moved to the Finance Department where he was responsible for overseeing claims activity and recording transactions on our accounting system. Tom has been instrumental in re-pricing major medical claims and subrogation collections from primary insurance carriers.

In 2008, Tom was promoted to Claims and Finance Supervisor where he was responsible for booking monthly premium revenue and creating premium reports for our clients. He created new internal and external workflows to gain efficiencies in the department and established the quality and accuracy review program for the finance staff. Tom was promoted to Claims Manager in 2010.

Tom came to On Call from Consolidated Group Claims in Merrimack, New Hampshire, where he worked for five years, gaining three years' experience as a claims examiner and two years' experience in overpayments and recoveries.

Kerri Howard
Senior Claims Adjuster

Kerri Howard, Senior Claims Adjuster, joined On Call International in October 2012, where she also leads many of the company's HIPAA initiatives. Kerri came to On Call from MetLife Auto and Home in Lowell, MA, where she was initially a Claims Adjuster and was quickly promoted to a Senior Claims Adjuster and then Unit Lead Senior Claims Adjuster, handling claims across the country. Prior to Metlife, Kerri worked at Liberty Mutual as a Claims Adjuster and was promoted to Senior Claims Adjuster, then to Bodily Injury Adjuster and eventually Bodily Injury Field Investigator. Kerri currently holds an adjusters license in 29 states and holds a BA in Communications from the University of New Hampshire. In her spare time, Kerri likes to golf and go for a run.

Human Resources

Sheli Bliss
Human Resources Manager

Sheli Bliss joined On Call in October 2003 as Office Manager, with more than 12 years of experience in Human Resources and Claims Fraud Investigations. Prior to joining On Call, she helped develop a successful investigation company by managing investigations as well as handling human resources and hiring. In 2008, Sheli became the Human Resources Manager at On Call. In this role, she is responsible for the recruitment of all new employees, benefits management, employee complaints and investigations, employee satisfaction, payroll, 401K distribution and compliance with federal and state employment laws. Through Sheli's work, the company has kept a low attrition rate and has added individuals who have proven themselves as key assets.

Sheli holds many certifications in HR Law and HR Management and expects to have her PHR by the end of 2013. In her spare time, she enjoys spending time with family, friends and her Boxer puppy, as well as hiking.

Board of Directors

Jim Hutton
Board of Directors

As member of the On Call International Board of Directors, Jim Hutton brings over 30 years of security industry expertise to On Call and will spearhead the development of the company's global intelligence capabilities.

Hutton is the former Chief Security Officer and Director of Global Security for Procter and Gamble, where he oversaw worldwide security direction and consultation for the multi-billion dollar enterprise. He led the company’s Global Crisis Management team and was a founding member of the firm’s Enterprise Risk Management process. Prior to his position at P&G, Hutton served as Vice President and Chief Security Officer for The Gillette Company of Boston, Massachusetts. He also has ten years of experience working for the U.S. Department of State’s Bureau of Diplomatic Security.

Hutton has held leadership roles on the Overseas Security Advisory Council (OSAC), a forum that provides security guidance to U.S. businesses abroad, and remains a member of the OSAC Alumni Committee. He has also served as a member of the Federal Bureau of Investigation’s Domestic Security Alliance Council and the Security Executive Council. Security Magazine named Procter and Gamble Global Security as a Best Managed Security Program in 2010 and Hutton was named one of the 25 Most Influential People in Security by the publication in 2009.

Hutton holds a Bachelor of Science Degree from West Chester University and has attended professional development programs at the business schools of both Georgetown University and the University of Notre Dame.

Bruce Kirby
Board of Directors

As member of the On Call International Board of Directors, Bruce Kirby brings more than 35 years of experience in the travel risk management industry to On Call and will oversee expansion of On Call's full corporate travel risk management portfolio.

Kirby is the former President and CEO of MEDEX Global Group, a leading provider of emergency medical, travel and security assistance, remote medical solutions and travel insurance. During his tenure with MEDEX, Kirby led the company through a series of acquisitions resulting in nine straight years of double-digit growth and profit. Kirby also served as the immediate past president of the U.S. Travel Insurance Association from 2012 to 2014.

Kirby received several awards while leading MEDEX Global Group, including: Small Business of the Year Awards, Maryland Chamber of Commerce, in 2008; Ernest & Young Entrepreneur of the Year Award Finalist in 2006, 2007, 2010, and 2011; Baltimore SmartCEO Future 50 Award in 2004, 2005, 2006, 2008, 2009, 2010, and 2011; World Trade Center Institute International Business Leadership Award in 2005 and The Association for Corporate Growth Deal of the Year Finalist in 2010, and Winner in 2011.

Bruce resides in Linthicum, MD with his wife of 37 years. In his spare time, he enjoys traveling the world and volunteering.