Northern Valley

Physical Therapy, P.A.

160 Paris Avenue, Northvale  


RVPT logo

River Vale

Physical Therapy, P.A.

645 Westwood Avenue, River Vale


NVPT logo
Denise Keehn

Denise is the Owner and Director of Northern Valley Physical Therapy and continues to practice as a licensed physical therapist. After receiving a Bachelor of Science Degree from Russell Sage College/Albany Medical College School Physical Therapy in 1979, she began her career in rehabilitation at the Kessler Institute in West Orange New Jersey. She then transitioned into inpatient/outpatient care at The Valley Hospital in Ridgewood, New Jersey. While working and attaining continuing education credits, she began her own private practice in home care and sports medicine. She then opened a private practice office in Fort Lee, New Jersey specializing in TMJ pain, dysfunction, and postoperative treatment.


Northern Valley Physical Therapy, P.A. was established in 1982 as a partnership specializing in workers compensation injuries and orthopedic and neurologic rehabilitation. With her leadership, the practice has evolved, expanded, and met challenges of our changing health field. Today under her direction, Northern Valley Physical Therapy and River Vale Physical Therapy provide excellent professional care at the highest level. Being responsible for quality of care is her most important objective.


Denise has initiated community fund raising activities for Alzheimer's disease, multiple sclerosis, and Parkinson's disease. She has provided in-services for back injury prevention at industrial sites and in healthcare settings. Together with staff, "Risk Of Falls” evaluations and "Fall Prevention" instruction have been given to many local area seniors and women's groups. Moving forward, her goal is to increase the scope of physical therapy services in the community to benefit the health and wellness of individuals, families, and businesses.

Learn More About Your Talented Therapists

The professionals at Northern Valley Physical Therapy P. A. bring years of practical experience and skill to your case, along with contemporary knowledge and insights.


You'll only find proven practices, skills, and upgraded techniques in our comprehensive care program. We'll help you reach your goals and attain all the benefits of your treatment!

Joseph was born and raised in Old Tappan, NJ and graduated from Northern Valley Regional High School. Dr. Massaro graduated summa cum laude from Rutgers University with his bachelor’s degree in Exercise Science, then went on to achieve his Doctorate in Physical Therapy at Rutgers School of Health Related Professions (formerly the University of Medicine and Dentistry of New Jersey), where he received the Academic Excellence Award for superior academic performance. Dr. Massaro prides himself on providing an outstanding level of individualized care for patients of all ages. His specialties include orthopedic and neurologic rehabilitation, as well as fall prevention therapy.


Joe is passionate about physical therapy because the field is rapidly growing and expanding into new roles, and physical therapists can truly make an impact on patients from all walks of life. He has always enjoyed the teaching aspect of physical therapy, and his experience as a Neuroscience Teaching Assistant for the DPT program means that he excels in helping his patients understand every phase of the rehabilitation process. He is excited about the future of the field of physical therapy, and shares the APTA’s vision of “transforming society by optimizing movement to improve the human experience.”

Denise Keehn, P.T.

Joseph A. Massaro, P.T., D.P.T.

"I think of you as caregivers, friends, family members and workers in a profession that my body sorely needs."

- Bob B., Tappan, NY

Put over 33 years of professional experience to work for you - call now!

Denise Keehn, P.T. Joseph A. Massaro, P.T., D.P.T. Jane good (2) APTA-logo

North Vale location

River Vale location

Both our Locations are a member of APTA

River Vale Physical Therapy and Northern Valley Physical Therapy we are excited to welcome Jody Flynn, PTA to our staff!


Jody is a licensed physical therapy assistant (PTA) in New Jersey. She graduated with an applied science degree in 2001 from Bergen Community College. The majority of her 17 years as a PTA has been in the outpatient orthopedic setting, treating various sports related injuries as well as comprehensive rehabilitation following orthopedic surgeries. She has a special interest in the treatment for injuries and surgeries of rotator cuff tears and total hip and knee replacement. She loves to learn and his pic that many techniques from skilled therapist and physicians as well as extensive continuing education courses. Her interests include yoga, bike riding with her children, and walking her dog in the park.

Jody Flynn, P.T.A.