8140 Ashton Ave
Suite 104
Manassas VA 20109


Tel: 703.257.3333
Fax: 888.974.0314


M-Th: 7:00am – 7:00pm
F: 7:00am – 1:00pm
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Specialty Services Offered:
  • Aquatic Therapy
  • Breast Cancer Rehabilitation/Lymphedema
  • Custom Orthotics
  • Pediatrics
  • Running Exam
  • Vestibular/Vertigo
  • Work Hardening
Take a Look Inside The Jackson Clinics Physical Therapy Clinic in Manassas.

Physical Therapy Clinic Manassas Staff

Phillip Ratliff, Clinic Director

Phil Ratliff The Jackson Clinics Physical Therapy Phillip Ratliff, PT, DPT, OCS

Education: Phillip is a 2012 Duke University graduate with his Doctorate in Physical Therapy. He completed his undergraduate work in 2009 at University of Tulsa in Tulsa, OK with a degree in Exercise Sports Science and a minor in Psychology. In 2012, he completed a specialty certification in Vestibular Therapy and Rehabilitation. He is also an active APTA member in the orthopedic and neurology section and a member of the vestibular/dizziness special interest group.

Specialties: Phillip has a strong interest and background in treating all orthopedic injuries and post-operative rehabilitation. He has worked closely with MD’s from the Steadman-Hawkins clinics for numerous post-operative care patients from high school through geriatric populations. Phillip also has a real passion for working with patients suffering from vertigo, dizziness, imbalance, and other vestibular disorders. He has worked extensively with conditions such as Benign Paroxysmal Positional Vertigo (BPPV), Unilateral vestibular loss, bilateral vestibular loss, Meniere’s disease, and disorders of the central nervous system. He is also plays an active role in the Jackson Clinics Vestibular Team and the further development of the company’s vestibular programs.

Fun Facts: Phillip is an avid sports fan of all types, although his heart lies with basketball. He has played basketball in competitive leagues since age 9 and has been a part of numerous intramural champions throughout his undergraduate and graduate career, including a championship won in Cameron Indoor Arena on Coach K Court. Phillip is a feverish Duke Blue Devil and Tulsa Golden Hurricane Fan. In his spare time, he can be found working out, shooting hoops in the local park, enjoying a good sports game on television, or hanging out with his friends and family.

Ben Keeton, Director of Clinical Operations

Ben Keeton The Jackson Clinics Physical Therapy Ben Keeton, PT, DPT, OCS

Education: Ben graduated from the University of Delaware with a Doctorate in Physical Therapy. There, he worked as a Graduate Assistant in the research department, developed a paper for publication in APTA’s PT Journal, and graduated first in his class. He completed his undergraduate work the College of William and Mary where he majored in Kinesiology with a pre-med track. At William and Mary, Ben played Division I varsity baseball for 4 years and graduate Phi Beta Kappa. He is also a Board Certified Orthopedic Clinical Specialist, and Board Certified Direct Access Provider and MBA Candidate at George Washington University. Ben has been certified as a clinical instructor from the American Physical Therapy Association.

Specialties: Ben is interested in rehabilitation of orthopedic conditions of all kinds. He has extensive experience with athletic injuries, postoperative care, chronic pain, and exercise prescription and progression. He is an educator at many levels in The Jackson Clinics, including teaching courses for professional development, mentoring new graduates, mentoring physical therapy students, mentoring orthopedic residents, and mentoring Clinic Directors and Office Managers on clinical operations. He has a passion for professional development, involvement in the APTA, and involvement in global initiatives for the advancement of the profession of physical therapy.

Fun Facts: Ben enjoys playing sports and is a Wiffle Ball Champion! He is also an avid fisherman and spends as much time as possible on the water. He loves to travel, and has worked with the Jackson Foundation to teach physical therapy in Ethiopia and Kenya as part of the ongoing Africa Programs.


Rosslynn Hamlin, Office Manager

Rosslynn Hamlin,

Mariam Shah, Office Administrator

Mariam Shah, Office Administrator at The Jackson Clinics Mariam Shah,

Michelle Fain, Office Administrator

Michelle Fain,

Bryant Lutz, Physical Therapist

The Jackson Clinics, Physical Therapy Bryant Lutz, PT, DPT, OCS

Education: Bryant graduated from Slippery Rock University as a Doctor of Physical Therapy. He also received a Bachelor of Science in Exercise Science from Slippery Rock. Bryant is also a Board Certified Orthopedic Clinical Specialist.

Specialties: Bryant is skilled in treating a variety of orthopedic conditions including knee, shoulder, spine and elbow, wrist and hand injuries. He has particular interest in sports rehabilitation and vestibular rehabilitation.

Fun Facts: Bryant enjoys weight lifting and snow boarding. To unwind, he likes to eat ice cream and watch ESPN. His favorite all time movie is The Goonies!

Learn more about Vestibular Rehabilitation.

Jennifer Burda, Physical Therapist

Jennifer Burda, PT, DPT, CLT-LANA

Education: Jennifer graduated from the University of Pittsburgh with a Doctorate of Physical Therapy. She also majored in Biology with a minor in Psychology from Allegheny College. Jennifer is a Certified Lymphedema Therapist for treatment of the upper and lower extremities.

Specialties: Jennifer is experienced in orthopedic rehabilitation and enjoys treating foot, ankle, knee, spinal, shoulder, and wrist and hand injuries. She also enjoys working with pediatrics and has previous experience working with children at the Western Pennsylvania School for Blind Children.

Fun Facts: Jennifer is a 10 time marathon finisher! Her favorite flavor of ice cream is Chocolate.

Kathryn Hayes, Physical Therapist

Physical Therapist Kathryn Hayes, PT, DPT

Education: Kathryn graduated from Virginia Commonwealth University with a Doctorate of Physical Therapy. She also received a post Post-baccalaureate graduate certificate in the Virginia Leadership Education Program in Neurodevelopmental Disabilities (Va-LEND). She also majored in Humanities and Political Science from the University of Colorado at Boulder.

Specialties: Kathryn is skilled in orthopedic rehabilitation including ankle, foot, knee, shoulder, and spine disorders. She has a special interest in pediatrics and treating infants through young teens concerning sports injuries, neurodevelopmental disorders, torticollis, gait abnormalities, and other musculoskeletal dysfunctions.

Fun Facts: Kathryn enjoys a variety of sports including swimming, running, and was a member of the equestrian team in college. She continues to enjoy horseback riding on the weekends.

Laura Barrett, Physical Therapist

Laura Barrett, PT, DPT

Education: Laura graduated from Ithaca College with a Doctorate of Physical Therapy . She also received a Bachelor’s degree in Clinical Sciences from Ithaca College. Laura is a Board Certified Direct Access Provider.

Specialties: Laura is skilled in rehabilitation of ankle, foot and knee disorders as well as non-surgical and post surgical interventions of the shoulder. She has a strong background in treating pediatrics (newborns to teens) for sports injuries, musculoskeletal dysfunctions and developmental delay. Laura has special interest in gait retraining and sports rehabilitation, particularly soccer, tennis, baseball/softball, and running.

Fun Facts: Laura enjoys playing many sports competitively, including soccer and street hockey and is part of the USA women’s street hockey program. She is also an avid runner, having completed 6 half marathons and her first marathon in 2009! Laura loves spending time with her husband and dog, trying new foods, and traveling.

Ryan Kalkbrenner, Physical Therapist

Ryan Kalkbrenner, Phyiscal Therapist in Centreville Ryan Kalkbrenner, PT, DPT

Education: Ryan graduated from Drexel University with his Doctorate in Physical Therapy. Prior, he completed his undergraduate education at the Pennsylvania State University, graduating from the Schreyer Honors College with a Bachelor of Science degree in Kinesiology. His honors thesis was completed investigating anatomical differences between sprinters and non-sprinters. Ryan has been an active APTA member since 2016, founding student physical therapy special interest groups across Pennsylvania.

Specialties: Ryan has a diverse background in treating orthopedic injuries and post-surgical rehabilitation such as rotator cuff and labral repairs, ACL reconstructions, and total hip/knee replacements. He also has a special interest in treating running and weightlifting related injuries, with significant experience coaching collegiate track & field athletes. Ryan is skilled in performing running gait analysis and enjoys educating the running community on improving performance and preventing injuries via weight lifting. Overall, Ryan is passionate about treating all orthopedic injuries and helping his patients avoid further injury or surgery when possible.

Fun Facts: In his spare time, Ryan loves being active through running, hiking, mountain biking, and fly fishing. He ran track & field for 9 years. During his undergraduate career, he was the sprinting/head coach of the Penn State Club Track & Field team, winning 2 national championships. Since retiring from track, Ryan now enjoys long runs and has since competed in the Philadelphia Half Marathon.

Erin Burlovich McDonald, Physical Therapist and Residency Mentor

Erin Burlovich McDonald, PT, DPT, OCS

Education: Erin graduated from the University of Delaware with a Doctorate of Physical Therapy. She received a Bachelor of Science Degree in Health Sciences from James Madison University and completed an Orthopedic Residency at the University of Delaware. She is a Board Certified Orthopedic Clinical Specialist and Board Certified Direct Access Provider. She is a mentor with the Jackson Clinics Residency Program and is an APTA certified Clinical Instructor for physical therapy students. She is also an Adjunct faculty member of the Doctor of Physical Therapy program at George Washington University.

Specialties: Erin has extensive experience in all kinds of orthopedic and sports injury rehabilitation, including non-operative and post-operative rehabilitation of the spine (neck and lower back), knee, shoulder. She identifies each patient’s individual deficits and works with them to facilitate their return to optimal function. She is also a certified BikeFit specialist.

Fun Facts: Erin was a competitive swimmer and played water polo in college. She competes in open water swimming, road running, and triathlons. She loves country music, hiking, travel, and playing with her baby girl!

Sonya Sherpa, Physical Therapist Assistant

Sonya Sherpa, PTA

Education: Sonya graduated in 2009 from Northern Virginia Community College with Associates of Applied Sciences as a Physical Therapist Assistant. She is a licensed physical therapist assistant. Sonya is an active member of the American Physical Therapy Association and The Virginia Physical Therapy Association. She is also certified in CPR.

Specialties: Sonya volunteered in a Skilled Nursing home facility based rehabilitation in the past. Her primary interest is in aquatic therapy and she enjoys working with variety of patients. She has experience working with athletes of all ages and post-operative rehabilitation.

Fun Facts: Sonya loves spending time with her family and friends. She enjoys driving scenic twisting roads and hiking. Sonya also likes to travel and learn new languages. She speaks Nepali, Hindi, and Urdu.

Alexandra Thompson, Certified Athletic Trainer

Alexandra Thompson, ATC

Jacob Trumbull, Certified Athletic Trainer

Jacob Trumbull, ATC

Joe D.
Joe D.

17:44 28 Jul 19
Bryant is a great Physical Therapist and so is Laura and the others. Alex is an awesome trainer and Sonya is also very good.
Marcia B.
Marcia B.

11:23 31 May 19
After my back surgery, I started with water therapy through the clinic. It was wonderful and I was able to resume activities and move on to regular therapy…
Samim Safi
Samim Safi
19:01 05 Jun 18
I came here with a severe ankle tendon tear that didn’t heal properly so months later I came in to do physical therapy. All of the staff was friendly and genuinely cared for my well being. I highly recommend this place.
John D. Clarke Jr.
John D. Clarke Jr.
18:55 25 Apr 18
A complete and first rate Physical Therapy Clinic. My therapist, Kathryn Hayes, was and is crucial to my overall recovery from knee replacement surgery. The physical issues presented by my before and after knee replacement surgery were analyzed, understood, and addressed by the development of a personal and comprehensive program of soft tissue manipulation, strength and conditioning excercises at the Jackson Clinic Manassas facility. This professional analysis and subsequent personal program has provided me the necessary full recovery with complete functional daily range of motion, balance and strength that has enabled me to enjoy my retirement years to the fullest. I highly recommend the Jackson Clinic to anyone that requires the professional physical therapy and rehabilitation services that they offer to our community. John Clarke

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More about our Physical Therapy Clinic in Manassas

Aquatic Therapy: Aquatic Therapy is held every Tuesday and Thursday morning from 7am to 9am at the Freedom Aquatic Center near the Manassas Campus of George Mason University. We use the smaller, warmer pool. All pool amenities (lockers and showers) are available. Please bring your own lock and towel.

Parking: We have plenty of general and handicapped parking close to the office.