Signal Hill Staff

Our practitioners are accustomed to delivering care in our offices or in hospitals, rehabilitation centers, skilled nursing facilities, and occasionally to a patient’s home. We are also available to deliver care 24/7. This level of service and expertise provides the highest standards of quality and care for you.

Susie Cortez

Accounts Receivable Specialist

Hilda Gomez

Accounts Receivable Specialist

Hilda Gomez has been working for Prosthetic & Orthotic Group since 2007. She working in the Signal Hill Office as an Accounts Receivable Specialist for the Signal Hill, Whittier and Torrance locations. She is married and has 2 sons; Hector, 20, who is starting his 3rd year in college and Kenny, 15, who is sophomore in High School. She is involved in ministry at Calvary Chapel Downey where she attends. In her spare time, Hilda enjoys watching movies and hanging out with her family. She likes learning about other cultures and especially trying new foods.

Brittany Gonzalez CPO

Certified Orthotist/Prosthetist

Mrs. Gonzalez obtained a Master’s degree in orthotics and prosthetics at California State University Dominguez Hills (CSUDH) in 2015. Concurrent with her classes, she worked as a research assistant at the Veterans Administration (VA) Hospital in Long Beach, California. Prior to her matriculation from CSUDH, Mrs. Gonzalez’s research on transfemoral gait was chosen to be presented at the American Academy of Orthotists and Prosthetists (AAOP) national meeting in New Orleans, Louisiana. Mrs. Gonzalez then went on to complete both her orthotic and prosthetic residencies at Prosthetic and Orthotic Group in southern California. She now works as a clinical practitioner, specializing in pediatrics and cranial remolding orthoses in both the Signal Hill and Torrance office locations. Mrs. Gonzalez is also credentialed at Children’s Hospital of Los Angeles (CHLA) and is a part-time instructor at the orthotic and prosthetic master’s program at CSUDH.

Sarah Hoffmann

Accounts Payables

Sarah Hoffmann began her accounting career in 2009 as a Controller for a real estate office in Long Beach, California. In 2013 she switched gears and moved into an accounting position for a McDonald’s Franchisee where she was responsible for over 11 restaurants. In 2017 she joined Prosthetic & Orthotic Group as an Accounts Payable Specialist and Administrative Support Specialist. Sarah has a daughter named Chloe (1) and two step children, Andrew (9) and Liam (6). In her free time she is jam packed with various sporting events, recitals and family functions. Sarah enjoys service work, great food, and movies at home.

Sonia Marlow

Operation Director

Sonia Marlow has been in working in the Orthotics and Prosthetic field for over 35 years. She worked for 15 years as the Area Administrator Manager managing 15 locations in Southern California with Orthomedics-Novacare. She then joined Prosthetic & Orthotic Group in 1998 as the Operations Director working in the San Gabriel Valley Office. Sonia love’s life and enjoys traveling, bike riding and kayaking but, her biggest love right now is being a grandma and spending time with her family.

Veronica Martinez

Patient Service Coordinator

Veronica Martinez has been working in the medical field since 1999. She went to school to be a Medical Assistant and upon completion received her certificate for both a MA and a Cardiac Technician. She worked at different medical groups in the eligibility/benefit department and she joined Prosthetic & Orthotic Group in 2015. Veronica is a Patient Service Coordinator for the Signal Hill Office. She enjoys dealing with patients in person and over the phone. Veronica is very busy mom with 3 kids Jose (23) a Marine Lance Corporal for 2 years, Carlos (15) sophomore in high school and finally made it in the Millikan baseball team, Mia (14) freshman at Millikan loves reading and watching old movies.

Glenn Matsushima CPO FAAOP

Miki Matsushima

Accounts Payable

Miki Matsushima started working with Prosthetic & Orthotic Group in 2015 as an Accounts Payables Specialist for their Signal Hill Office.  After being a full-time mom for the last 17 years and volunteering at her two children’s schools and extracurricular activities they now both have graduated from high school, she was ready to get back in the workforce again.  She has been married to her husband Mark since March 1992 and they have 2 children Maxx and Madi.

Edward Matthews


Edward Matthews is from South America and came to the US in 1992. He started with Vogue Prosthetics and Orthotics. Ed became and Orthopedic Technician with Orthopliance and was there for 15 years. In 2015 he started with Prosthetic & Orthotic Group as an Orthotic Technician in the Signal Hill Office.

Kate Muller CPO

Certified Prosthetist Orthotist | Compliance Manager

Shaun Snider


Shaun Snider is from Redlands and started his career in Orthotics and Prosthetics in 2009 with Fountain Orthotics and Prosthetics. He then started with Prosthetic & Orthotic Group in 2016 as an Orthotic Technician in the Signal Hill Office. He is married with 2 beautiful girls ages 16 and 4.

Vince Snider

Lead Technician

Vince Snider is from Southern California. In 1990 he started his career as an Orthotic Technician. In 1999 he was the Fabrication Manager for a large corporate O&P facility where he started to learn about Prosthetics. Vince joined Prosthetic & Orthotic Group in 2001 as the Fabrication Manger in the Signal Hill Office. He loves hanging out with his kids while they still let him. In his spare time he likes to read and watch hockey.

Sasha Valencia

 Operations Manager

Sasha Valencia is from Manhattan, New York and moved to Northern California in 2010 and then relocated to Southern California in June 2017.  Sasha has worked in both the legal and medical field in positions ranging from Office Manager, Medical Assistant to HR and Contracts Manager.  Her last position was with Capstone Orthopedic as their HR and Contracts Manager since 2015. She then joined Prosthetic & Orthotic Group family 2017 as the Operations Manager in the Signal Hill Office. She has 3 boys Gianni, Arell and Phoenix.

Larry Wong CP

Certified Prosthetist | Clinical Manager
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