Executive
Director

Brian M. Tiburzi, MA, has worked for PHI since 2008. Born and raised in St. Louis, Brian earned his MA in History from the University of Missouri–St. Louis. Brian helped coordinate PHI’s last two international conferences, in 2009 and 2014. He has also represented PHI at past conferences in Toronto, Copenhagen, and Sydney.
Brian has been very involved in the design and management of Polio Place as well as the new IVUN site, www.ventnews.org.
He was named Executive Director in September of 2017.
Post-Polio Health International is governed by a Board of Directors and has a paid staff of two. Design and editorial services are provided by independent contractors.
Honorary Board
Honorary Board Members are recognized for their contributions and loyalty to PHI and to the disability community at large. (These members do not have voting privileges and are not entitled to participate in meetings or other activities of the directors.)
Augusta S. Alba, MD
Coler Goldwater Specialty Hospital and Nursing Facility, Roosevelt Island, New York
Allen I. Goldberg, MD, MM, FAAP, FACPE, FCCP
Pediatric Home Health, Loyola University Medical Center (retired), Chicago, Illinois
Anna Eleanor Roosevelt
Community and Education Relations, The Boeing Company, Chicago, Illinois
Maurice Sonnenberg
New York, New York
Stanley K. Yarnell, MD
Physical Medicine and Rehabilitation (retired), San Francisco, California
Medical Advisory Committee
The Medical Advisory Committee is composed of open-minded health care professionals who are experts in their field and who support PHI's philosophy about independent living. Members must be knowledgeable about the late effects of polio and demonstrate the ability to think analytically and strategically in advising PHI on medical matters. The chair will be a Board member and is responsible for communications between the committee and the Board. The committee composition will represent health care professionals in diverse areas of specialization (e.g., physiatry, pulmonology, occupational therapy) and a balance of backgrounds (e.g., geographic, cultural, gender).
Frederick M. Maynard, MD, Chair
Physical Medicine and Rehabilitation, Marquette, Michigan
Laura Bertolasi, MD
Department of Neurosciences, Unit of Neurology, AOUI (Azienda Ospedaliera Universitaria Integrata), Verona, Italy
Dr. Stephen De Graaff
Director of Pain Services, Epworth Rehabilitation, Camberwell, Victoria, Australia
William M. DeMayo, MD
Specialized Rehabilitation Hospital, Abu Dhabi, United Arab Emirates
Marny K. Eulberg, MD
Mountain & Plains Post Polio Clinic, Wheat Ridge, Colorado
Jan Lexell, MD, PhD
Professor of Rehabilitation Medicine, Lund University, Consultant Physician,
Department of Neurology and Rehabilitation Medicine, Skåne University Hospital in Lund, Sweden
Stephanie T. Machell, PsyD
Framingham, Massachusetts
Julie G. Madorsky, MD (retired)
University of California-Irvine, Encino, California
Prof. Frans Nollet, MD, PhD
Academic Medical Center, University of Amsterdam, Netherlands
Rhoda Olkin, PhD
California School of Professional Psychology at Alliant University, San Francisco, California
Dr. Arzu Yağız On
Ege University Medical Faculty, Department of Physical Medicine and Rehabilitation, Izmir, Turkey
Ege Üniversitesi Tıp Fakültesi, İzmir, Türkiye
Susan Perlman, MD
Clinical Professor of Neurology, UCLA, Los Angeles, California
Daniel Ryan, MD
Center for PM&R, PC
Warren, Michigan
Daria A. Trojan, MD
Montreal Neurological Institute and Hospital, Montreal, Quebec, Canada
Carol Vandenakker Albanese, MD
University California Davis Health System, Sacramento, California
Mary Westbrook, PhD (retired)
Conjoint Associate Professor, Faculty of Medicine, University of New South Wales, Sydney, Australia
Martin B. Wice, MD
Center for Advanced Medicine/Neuroscience Center, Washington University, Saint Louis, Missouri

Sunny Roller, MA, graduated from Central Michigan University and completed some doctoral work at the University of Michigan and Michigan State University. She currently is a part time research study consultant at Michigan Medicine in the Department of Physical Medicine and Rehabilitation. Before her official retirement in 2005, she was employed there as a Research Program Coordinator for 19 years.
Emeritus Professor of Applied Behavioral Science
Ann Crocker is our newest member to PHI’s Board of Directors. A co-founder of the Post Polio Support Group of Maine, she remains active in the group, including compiling and writing the newsletter sent to nearly 500 people. Ann’s career included working as a paralegal, property manager, financial analyst, and oversight manager in a number of areas at the state housing authority of Maine. While working fulltime, she completed her BS degree and MBA by taking evening classes through the University of Maine system.
Mike Mrozowicz had a 42-year career with John Deere and has extensive experience in accounting, finance, and operations. He is a CPA and has a BS in Accounting from the University of Illinois and an MBA (finance emphasis) from the University of Nevada - Reno. He currently resides in Highlands Ranch, Colorado and has served as PHI's treasurer since 2018.
Katherine DeLong joined the PHI team in 2024. Currently finishing her senior year at Pepperdine University, she is pursuing a BS in Business Administration, a BA in Integrated Marketing Communications and a minor in Applied Mathematics. Her journey with PHI began as a member of a student consulting group, where she grew a great appreciation for PHI and the organization's mission. Eager to play a larger role in advancing the organization's goals, Katherine transitioned to a board position in early 2024, fueled by excitement to contribute to PHI's ongoing mission and success.
Marny Eulberg, MD, earned her BS in clinical laboratory technology from South Dakota State University and MD from the University of Arizona in Tucson. She is a retired family practice physician residing in Wheat Ridge, Colorado.
Jennifer Thieme Kehres grew up in her family business, Amigo Mobility, and joined the company full time in 2007 after graduating from Michigan State University with a degree in Marketing. Founded by her dad, Al Thieme, in 1968 when he invented the first mobility POV/scooter, Amigo continues to be a family-owned business and manufactures all products in Michigan. As Director of Business Development, Jennifer is involved in marketing, sales, product development and on the company’s Leadership Team. Passionate about Amigo’s mission of Improving Lives Through Mobility®, Jennifer has been an advocate for people with disabilities and was a guest on John Stossel’s TV show on Fox News in 2011.
Bonnie is a 1951 polio survivor who was paralyzed from the neck down. After many months in a Sister Kenny rehabilitation hospital, Bonnie credits that treatment and the doctors who cared for her, for her remarkable, but not complete recovery.
Frederick M. Maynard, MD is a 1968 graduate of the University of Michigan Medical School (UMMS) and is a Board Certified Specialist in Physical Medicine and Rehabilitation (PM&R). He was a faculty member of the UMMS for 16 years and started a post-polio clinic there in 1984 and led a Post-Polio Research & Education Center for 8 years. He then served as Professor & Chairman of PM&R at Case Western Reserve University in Cleveland, Ohio, for 6 years before moving to Marquette, Michigan, in 1999 to practice community-based PM&R.
Daniel Ryan, MD, grew up in southeastern Michigan and graduated from Kalamazoo College with degrees in political science and health science. After graduating from Wayne State University School of Medicine where he served as President of his graduating class, Dr. Daniel Ryan completed a residency at the Detroit Medical Center. He served as Chief Resident.