People. Purpose. A Healthier You.

We’re more than a clinic — we’re a team dedicated to helping you move better, feel better, and live better. Across our New York locations, we’re proud to serve our communities with compassionate, expert care.

Experienced
Team
Patient-Focused
Care
10 Convenient
Locations

Our Owners

Built on a vision to provide exceptional care.

Quantum PT & Chiro was founded with a simple belief: that everyone deserves high-quality, personalized care to live a healthier, more active life. Our owners bring years of clinical experience, leadership, and a deep commitment to the communities we serve.

Dr. Jason Birnhak, DC

Chief Executive Officer

“Our mission is to help every patient get back to doing what they love.”
Johanna Castellano

Co-Owner

“My passion for helping others through physical therapy began in college.”

Our Management Team

Leaders who keep us moving forward.

Our management team ensures that every location delivers the same high standard of care, a positive patient experience, and a supportive environment for our staff.

Angely Duran

Director of Marketing & Business Growth
Allison De La Rosa

Director of Operations & Business Strategy
Marylene Pineda, DPT

Director of Physical Therapy

Our Clinical Team

Compassionate. Skilled. Here for You.

Our team of physical therapists, chiropractors, and support staff work together to create personalized treatment plans and provide the highest level of care at every visit.