Angela J Bryl, CPO, MBA
Chief Operating Officer (CV)

Angie is a Certified Prosthetist Orthotist, who has been with Dankmeyer since 2006.  A native of Linthicum, MD, her high school interests in science and math led her to study biological engineering in college, but she found P&O to be a profession where she could combine these interests with her desire to interact with patients, and most effectively help change their lives.  She has a BS in Biological Resources Engineering from the University of Maryland, and Post-Baccalaureate Certficates in Prosthetics and Orthotics from California State University and Northwestern University respectively.  Angie recently completed her Masters in Business Administration. She is adjunct faculty at the University of Maryland School of Medicine School of Physical Therapy. Angie enjoys playing ice hockey locally in a number of mixed leagues, when she is not coordinating patient/Dankmeyer employee activities. 

Mary A Reedy, CP
Clinical Director (CV)

Mary is a Certified Prosthetist and Maryland native who has been with Dankmeyer since 1999. Early, she wanted to be a robotic engineer and work with animatronics at Disney World.  While researching other engineering options at college, she came across the field of prosthetics.   She spent two summers volunteering at Dankmeyer, working in both the lab and patient care areas.  She went on to complete her BA in Human Services Counseling from Metropolitan State University in St. Paul, Minnesota, while consecutively completing her Associate of Arts in Prosthetic Technology at Century College.   She stayed on at Century College to complete her Diploma in Prosthetic Practitioner Advanced Specialty.  Mary returned to Baltimore, and to the place which inspired her career path, to complete her prosthetic residency at Dankmeyer. 

Rochelle A Groves, CPO (CV)

Rochelle Groves is a Certified Prosthetist Orthotist who joined the Dankmeyer team in 2018. While pursuing her Bachelor of Science in Biomedical Engineering at Johns Hopkins University, she shadowed at Dankmeyer to gain a clinical perspective on prosthetic design. Fascinated by the field, she pursued her Master of Science in Prosthetics and Orthotics at the Georgia Institute of Technology, then her orthotic residency at the University of Michigan Orthotics and Prosthetics Center.

Rochelle returned to Dankmeyer to complete her prosthetic residency and now serves as a clinician in the Baltimore office. She collaborates regularly with the Spinal Cord Injury Orthotics clinic and Pediatric Limb Differences Clinic at Kennedy Krieger Institute. Rochelle is a Regional Resident Liaison through the National Center for Orthotic and Prosthetic Education (NCOPE). 

Rebecca Frost, CPO (CV)

Rebecca Frost is a Certified Prosthetist Orthotist who joined Dankmeyer in 2019 as a Resident Orthotist. She got her first exposure to the field of prosthetics and orthotics shadowing at Dankmeyer in 2015. She was inspired by the ability to combine patient care, science and art. She earned a BS in Kinesiology from the University of Maryland, College Park and a Master of Prosthetics and Orthotics degree from the University of Washington, Seattle. Rebecca comes from a large family and loves to travel and try exotic foods with her loved ones. Her hobbies include anything outdoors, including activities like hiking, wakeboarding, snowboarding, mountain biking, and volleyball. Rebecca has studied prosthetics primarily within active duty and retired military populations and volunteers with organizations that encourage people with all types of abilities to stay active and participate in adaptive sports.

Jeremy Halteman, CPO (CV). Director of Technical Operations

Jeremy joined Dankmeyer in 2019 as a high tech clinical specialist. Jeremy attended college at St. Petersburg College of Orthotics and Prosthetics, later moving to Baltimore to complete his residency and become a CPO, and has been here ever since. He enjoys problem solving unique and challenging cases as well as exploring emerging socket technologies. He has extensive experience fitting subischial sockets of various designs, as well as vacuum suspension and custom liners. He gets really excited about new O&P technology and the future of the industry - particularly 3D printing applied in O&P. Outside of work, Jeremy enjoys photography, spending time with his wife and kids, appreciating the outdoors, leading worship at church and playing slow-pitch softball.

Sarah Martinez Holder, CPO (CV)

Sarah Martinez is an American Board Certified Prosthetist Orthotist who joined the Dankmeyer team in 2021. Originally from Falls Church, Virginia, Sarah did an 8th grade project on a prosthetic device and was eager to look into the bigger picture of how this device helped people.  She received her  B.S. in Industrial Engineering Technology from East Carolina University, Go Pirates! Looking forward to discovering the world of prosthetics and orthotics, she completed her M.S. in Prosthetics and Orthotics from the University of Hartford. While completing her graduate education she was able to provide prosthetic care overseas by attending a mission trip to Lima, Peru with the Dreaming and Working Together program. 

Sarah appreciates that this field is full of constant growth and learning experiences. She is devoted to caring for her patients and works to  understand their goals to develop a solution together. 

As a past gymnast and gymnastics coach for 10 years, Sarah likes to stay active. Outside of Dankmeyer, Sarah enjoys spending time with family and friends, the outdoors, her dog and as a dance instructor.

Chrissy Huebner, CPO (CV)

Chrissy is an American Board Certified Prosthetist Orthotist who joined Dankmeyer in 2022. She is originally from Cleveland, Ohio. Chrissy became interested in the field of Orthotics and Prosthetics in high school after shadowing and volunteered in multiple hospitals in the area.

She attended the University of Washington and Cleveland State University for her BS in Health Sciences and completed her MS in Prosthetics and Orthotics at Eastern Michigan University. She completed her residencies in the Washington DC area and Michigan. She enjoys focusing on invidualizing prosthetic and orthotic devices for a patients unique needs. In her free time, Chrissy enjoys exploring as well as dancing, kayaking and spending time with her dog.

Claire E Vallery, CPO

Claire Vallery is a Certified Prosthetist Orthotist who joined Dankmeyer in 2024. She is currently a PhD Student at the University of Delaware in the Delaware Limb Loss Lab with a focus in clinical outcomes research.  She earned a BS in Biomedical Engineering and a BA in Spanish from North Carolina State University. After she was introduced to the field during a summer spent with the Range of Motion Project in Guatemala, she attended Northwestern University for her Master of Prosthetics and Orthotics, completed her orthotics residency at the University of Michigan Orthotics and Prosthetics Center, and her prosthetics residency in North Carolina. 

When Claire is not seeing patients or working on new research, she enjoys reading books, trying new sports, and hanging out with her husband and puppy. In college, she was on the club rowing team and continues to enjoy anything related to the water.

Helena J Ringer, Resident Prosthetist Orthotist

Helena joined Dankmeyer in 2023 as a Resident Prosthetist Orthotist. She received both her BS in Psychology and MS in Prosthetics and Orthotics from the University of Pittsburgh. Prior to pursuing her MS she worked as a Physical Therapy Technician. Her love for the field stems from the combination of care and creativity that is needed for each patient and device. During her time at the University of Pittsburgh, she was able to advocate for the field at the AOPA Policy Forum and volunteer at Camp Star, a youth amputee retreat.

Helena was on the national team for acrobatic gymnastics and loves to stay active. In her free time, she enjoys crocheting, spending time with her husband and two cats, and playing pickleball.

Sheryl N Sachs, CPO

Sheryl is a Certified Prosthetist Orthotist, who has recently returned to Dankmeyer after a short move to New Jersey. She has been with Dankmeyer since 2011. A native of Baltimore, Maryland, she received a BS in Kinesiology and a BA in Communications from the University of Maryland, College Park. While she was there, she was interested in sports broadcasting, worked as a student athletic trainer, and initially thought she might to pursue a post-graduate degree in physical therapy. She had the opportunity to volunteer at Walter Reed in the Prosthetics Lab and found she loved working with the devices and the patients. She attended the Georgia Institute of Technology where she received her Master of Science in Prosthetics and Orthotics and completed her residencies at Dankmeyer. Sheryl serves on the executive committee of the NCOPE board, a professional organization that focuses on overseeing the education of new students entering O&P. She is active with the American Orthotic & Prosthetic Association (AOPA) as a volunteer on their government affairs committee and is passionate about advocacy efforts to help improve patients’ access to care. She is a former marathoner, and in her free time, she enjoys watching sports and spending time with her husband and two children.

Cole T Branche, CPO (CV)

Cole joined Dankmeyer in 2022 as a Resident Prosthetist Orthotist. Cole attended McDaniel College where he received his B.A. in Biology before graduating from Alabama State
University with his M.S. in Prosthetics and Orthotics. He is passionate about transfemoral prosthetics and aims to utilize his education and skills to the best of his ability while helping his patients achieve any goals that they have set for themselves. Cole greatly enjoys volunteering in the field of Prosthetics and Orthotics which has provided him unique experiences such as playing with a wheelchair basketball team and aiding the National Amputee soccer team from Haiti in the Winter of 2022. Outside of work, Cole enjoys spending time with his wife, working out, and being outdoors. As a former collegiate athlete, Cole also spends his free time playing any sport he can!

John Cavallaro, Resident Prosthetist Orthotist

John joined Dankmeyer in 2024 as a Resident Prosthetist Orthotist. He received his Bachelor’s in Biomedical Engineering from the University of Tennessee. During his senior year he was unsure of what career/industry to work in. While he enjoyed designing and building devices for people, he wanted to directly see the impact he had and learn about the patient’s stories. That’s when he started shadowing at a local O&P clinic and from then on, fell in love with the industry. He later received his Master’s in Orthotics and Prosthetics from the University of Hartford. He’s excited to see how the industry evolves with new prosthetic technologies and how best to treat every patient he interacts with during his career. In his free time, he enjoys photography, playing video games, working on cars, staying active, and traveling.