Staff

Staff Bios

Meet our Lawrenceville Team

Dr. Cassandra Wilhelm, PT, DPT

Meet Dr. Cassandra Wilhelm, PT, DPT a compassionate physical therapist who’s dedicated to helping people feel their absolute best. After earning her Doctor of Physical Therapy degree from Armstrong State University in Savannah, Georgia, and her Bachelor's in Exercise and Sports Science from the University of Georgia (GO DAWGS!), Cassy has channeled her natural nurturing spirit into changing lives. With a growing passion for vestibular rehabilitation and working with patients with neurological conditions, Cassy is excited to harness FYZICAL’s cutting-edge equipment to create truly unique, impactful therapy sessions for each patient she meets. Outside of the clinic, she enjoys spending time outdoors or near any source of water, participating in group fitness bootcamps, and most of all, adores spending time with her rescue dog, Tequila, who came all the way from Guadalajara!

Laura Estrada, PTA

Physical Therapist Assistant

Laura Estrada brings compassion and dedication to her role as a Physical Therapist Assistant. Originally from Medellín, Colombia, she is fluent in both English and Spanish, allowing her to connect with and support a wide range of patients. Laura began her journey into physical therapy with a strong interest in anatomy and physiology, where she developed a fascination for how the body works. Through shadowing experiences, she discovered her passion for helping people recover, regain mobility, and reach their personal goals. What she enjoys most about physical therapy is guiding patients through their recovery process and celebrating their progress along the way. She earned her Bachelor of Science in Pre-Physical Therapy from Pensacola Christian College and later completed her Associate of Applied Science degree as a Physical Therapist Assistant at Central Georgia Technical College in Warner Robins, GA. Outside of the clinic, Laura enjoys spending time outdoors whether hiking or jogging in the sun, as well as relaxing with crocheting and knitting.

Briana Ortega

Patient Care and Marketing Specialist

Meet Briana Ortega, our Patient Care and Marketing Specialist. Bilingual in English and Spanish, she serves as a vital ambassador for FYZICAL Lawrenceville, committed to building strong partnerships with healthcare providers and the local community. She brings three years of healthcare experience, with a strong focus on management and operations. Currently completing her Bachelor of Science degree in Business Administration at Georgia Gwinnett College, she is passionate about using her skills to enhance patient care outcomes understanding that patient success is at the heart of everything she does. Outside the clinic Briana enjoys traveling and exploring new destinations, discovering diverse cuisines, and pursuing her passion for interior design.

Isabella Rossi

Client Care Specialist

Meet Isabella Rossi, our Client Care Specialist. She brings an energetic and creative spirit to the FYZICAL Lawrenceville team. Bilingual in Spanish and English, Isabella was born in the U.S. and proudly embraces her Venezuelan, Colombian, and Italian heritage. Her appreciation for culture, connection, and community allows her to build meaningful relationships with patients from all backgrounds. She is currently pursuing her Bachelor’s degree in Business Administration with a concentration in Marketing. Outside of work, she enjoys discovering new food spots, taking workout classes, running, and exploring her love for art.
Get in Touch with Our Lawrenceville Team