Katherine Parker, MSPT
M.S., Physical Therapy,
Sargent College of Allied Health Professions


Katie began her career at Children’s National Medical Center. She is certified in Neuro-Developmental Therapy. Her experience includes research of and lecturing about neuromuscular disorders. Katie provides PT services to the Early Intervention population through Play-Based Physical Therapy and she owns KTPT, LLC, which provides pediatric PT to children in the home setting in Northern Virginia and Washington, D.C. Katie enjoys spending time on the water, watching soccer games and spending time with her family.

M. Craig Peppers, DPT
D.P.T., Marymount University


Craig has rich experience in the areas of sports medicine, outpatient rehabilitation, and pediatrics. He provides physical therapy to the Early Intervention population in Washington, D.C. through Play-Based Physical Therapy and is owner of Define Physical Therapy, LLC, which provides home-based physical therapy services to children and adults in Northern Virginia and Washington, D.C. Craig also lectures on the subjects of health and medicine at universities, high schools, and middle schools in the Northern Virginia area. He enjoys running, hiking, and playing a variety of sports with friends and family during his free time.

Lauren Ephrussi, MSPT, DPT
M.S., Physical Therapy, Georgia State University
D.P.T., Temple University


Lauren is a gifted manual therapist and has good insight into ways in which children with more significant physical impairments benefit from seating and positioning equipment. She works well with families and teachers to help her young clients. Lauren has experience working with infants who were born prematurely and with orthopedic conditions, such as torticollis. She lives with her family in Washington, D.C.  She enjoys biking and often bikes to see her clients.

Meet Our Team

Melissa Parmley Smith, PT
Director, Play-Based Physical Therapy, Inc.
B.S., Physical Therapy, Georgia State University


Melissa has practiced pediatric physical therapy in Washington, DC since 2004. Many children and families know her as “Missy” and she loves being a physical therapist. She received her pediatric training at Children’s Healthcare of Atlanta. She has honed her manual therapy skills over the years and includes using myofascial release and Neuro-Developmental Therapy techniques. Her other interests include spending time with her family and travel.

Celia Martins, DPT
D.P.T., University of Maryland Eastern Shore

Celia is a dynamic therapist with a substantial background in working with children prior to and after graduating from PT school. Through Play-Based Physical Therapy, she works with young children in the Early Intervention Program in DC. Celia also has her own pediatric PT practice, Vida Therapy, LLC, providing private practice PT in children’s homes and daycares. In addition to providing physical therapy to a full caseload, she currently attends Georgetown University’s Professional Certificate Program in Early Intervention. She is also developing applications for professionals to use in the field to better communicate with the families they serve and their professional team members. Celia is originally from Brazil and speaks Portuguese and Spanish. Outside of work, school, and app design, Celia enjoys traveling.