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Meet the Executive Team

Frank Messana, DO, MRO, CIME

President / Corporate Medical Director

Dr. Frank Messana is one of the founders of 1 Source. He is board-certified in Family Practice and has extensive training in Occupational Medicine. Dr. Messana is a native of the Detroit area and moved to Chicago in 1988 to attend Elmhurst College, where he received a Bachelor’s Degree in Biology with high honors in 1992. Dr. Messana then attended the Chicago College of Osteopathic Medicine where he graduated in 1996. Following an internship at Cook County Hospital in 1996-1997, he worked in private practice providing care in family medicine and occupational medicine before returning to a residency at Midwestern University in 1999 which he completed in 2001. During his residency he continued to work part time in Occupational Medicine in Indiana. Prior to co-founding Comprehensive Care with Dr. Michael Foreit in 2003, Dr. Messana staffed Saint Margaret Mercy’s Occupational Clinic in Griffith and also worked at Saint Anthony’s Occupational/Urgent care “Medwatch” clinics in Michigan City and Chesterton. He is a certified Medical Review Officer through the American Association of Medical Review Officers.  

Dr. Messana also received additional training in Independent Medical Examinations and received his CIME in 2007. Dr. Messana’s training also included disability ratings through the American Board of Independent Medical Examiners. He is also a National Registry Certified Medical Examiner.

Michael Pelz

Vice President of Operations

For the first ten years of his career, Michael worked within the automotive industry overseeing operations and the worker’s compensation & occupational medical needs of the production employees.  Mike focused a great amount of his efforts towards worker’s compensation regulations, industry-based compliance standards, H.R. policies & procedures, effective hiring practices and lean manufacturing / operations.


Through his involvement in worker’s compensation and occupational medicine, Mike began a career with Comprehensive Care, a dedicated Occupational Medical Clinic, as their Director of Operations in 2006.  In 2007, Mike integrated Industrial Rehabilitation, Ergonomics, and Physical Therapy Services to the scope of services offered through Comprehensive Care.  In 2011, Mike and Dr. Messana developed and launched the 1 Source Division of Comprehensive Care.  1 Source takes on the role of the Corporate Medical, Compliance and Safety Director on behalf of their clients.  Mike is Currently the Vice President of Operations for 1 Source and the company now has locations in Griffith, IN, Ocala, FL, and Las Vegas, NV.  As of 2023, 1 Source has expanded to provide their service offerings in the United States, Bahamas, Canada, Mexico, Columbia, Brazil and the UK.

Christian Eckart

Director of Operations

With over 25 years’ experience in the IT and Software development industry, Christian has managed and led global teams for some of the largest IT companies and Healthcare Organizations in the United States including, Microsoft, Cisco, IBM, Lexmark, Cleveland Clinic and Mayo Clinic.

 At 1 Source, Christian is responsible for the successful delivery of software and IT support infrastructure. He manages the entire software development life cycle for internal and external facing applications as well as the strategic creation, delivery, and vision that support the overall goals of the leadership team. By leveraging new and existing technology, Christian creates an efficient and seamless workflow for our entire organization.

Christian attended Indiana University and Illinois College and currently lives near Louisville, Kentucky.

Tami Kelly, RN, COHN

Director of Medical and Health Services

Tami oversees the Injury Department. Along with her team, she delivers high quality care and case management to achieve the best possible outcomes for all patients.

Prior to joining 1 Source, Tami delivered nursing care to patients in various factories, hospitals, and ambulatory care settings for over 25 the years. She has been working in the occupational medicine and workers’ compensation field since 2003 and has extensive knowledge in workers’ compensation case management, injury management, OSHA standards, and recording keeping and recordability in occupational injuries and illnesses for a variety of industries. She is a Certified Occupational Health Nurse (COHN) and an active member of the American Association of Occupational Health Nurses. Tami is a proud lifetime Indiana resident, earning her Registered Nursing degree from Indiana University, and she currently lives in St. John, Indiana.

Alexa Kelly

Program Integration Manager

As the Program Integration Manager, Alexa is responsible for the new client on-boarding process, as well as maintaining and updating existing client’s programs. In addition to those services, the Program Integration department also performs database management within our Sourcelink portal.

Alexa is a graduate of Purdue University with a bachelor’s degree in hospitality and tourism management. She started her career working in the hotel industry for 6 years before taking on her new role with 1 Source in 2016. During her time in this industry, she gained a large amount of customer service and project management experience.

Alexa first started with 1 Source as a Compliance Administrator, then moved over to a Resource Administrator when our Resource Department was developed. After that she moved into the Program Integration Department as the Program Coordinator then eventually moved up to her current role as the Program Integration Manger.

Brittany Piaseczny

Compliance Manager

Brittany Piaseczny has been with 1Source since March of 2019. She started out as a Compliance Administrator and over the years, with her leadership and dedication, has transitioned to our Compliance Manager. Brittany is responsible for developing and overseeing the Compliance Department which monitors the Medical Clearance Exams and Surveillance Programs. The number one goal she shares with her department is to ensure that the Client’s needs are met to their full satisfaction.

Born and raised in Northwestern Indiana, Brittany graduated from the Purdue University North Central campus with a Bachelor’s degree in Health Administration. Following college, she extended her studies and received her Certification in Medical Billing and Coding. Brittany has more than 10 years of customer service experience with previously working in the Apartment Rental Industry. She has always had a passion for the medical field and ambition to help the people around her. Brittany’s role at 1Source allows her to do just that.

Anthony Marquez

Ergonomics Coordinator

Anthony completed his undergraduate degree in 2006 where he earned a B.S. in Kinesiology from Indiana University. From there he worked as a Personal Trainer before deciding to deciding to pursue a career as a Physical Therapy Assistant. In 2010 he graduated from Ivy Tech Community College and became a licensed PTA. After working in the Outpatient Physical Therapy Department for Comprehensive Care for 12 years, he was promoted to Ergonomics Coordinator in 2013. As the Ergonomics Coordinator he was able to learn and gain an understanding on the job demands associated with an industrial work setting.

Anthony will now bring his education, knowledge, and experience to team up with the Injury Department of 1 Source OHS.  He will help employees with job specific exercise and stretching programs as well as help the nursing team with management of injuries that require physical therapy. His vast knowledge of job demands will help the employee and client understand root cause of injury and make recommendation to prevent future injuries at the workplace.

Dr. Bruce D. Horton, RPh., D.O., FACOEP-D, CMRO

Bruce D. Horton, RPh., D.O., FACOEP-D, CMRO. has a B.S. in Pharmacy and is a Doctor of Osteopathic Medicine. He is certified in Emergency Medicine, a certified Medical Review Office, and has chaired committees for Pharmacy, Therapeutics, and Emergency Medicine. He specialized and owned is own occupational medical clinic prior to joining the 1 Source Team as the Assistant Medical Director.

His education, experience, and knowledge of pharmaceuticals and occupational medicine & the associated standards of OSHA, MSHA, DOT (FMCSA), etc. puts me in a unique position to service 1 Source’s clients with their worker’s compensation and occupational medical needs.