Why cash-based? 

Better Treatment 

  • 1 on 1 care - 100% attention to you and your goals 100% of the time. 

  • Updated home program each visit. 

  • Unlimited access to your Physical Therapist.

  • Email and text access to ensure continued progress and modifications between sessions. 

  • No restrictions - not limited by insurance companies.


Fewer Visits = Less Money

  • Visits are spread out to once every 1-3 weeks (as needed to ensure progression), rather than 2-3 times per week like at many outpatient PT clinics where copays are more expensive than ever and you often end up paying their cash rate until you meet your (likely high) deductable. 

  • Better treatment & home program progression leads to patients getting better faster with fewer visits.

  • If we include hands-on treatment to help reduce symptoms, we will teach you how to best replicate this technique to yourself using a foam roller, lacrosse ball, bands, etc for more frequent and effective self-treatment.


  • Unlimited access to your Physical Therapist throughout your plan of care.

  • Telehealth visits can be performed from your own space when you need the help.

Welcome to the New Age of Physical Therapy

Physical Therapy Services

We can help you diagnose and rehab any musculoskeletal/orthopedic injury and after any orthopedic surgery, but we specialize in treating running-related injuries. These include:

  • Tendinitis/Tendinopathies (Achilles/Haglund's Deformity, patellar/Jumper's Knee, gluteal, posterior tibial, proximal hamstring)

  • Plantar Fasciitis/fasciopathy

  • Medial Tibial Stress Syndrome (Shin splints)

  • Bone Stress Injuries (stress reactions, stress fractures)

  • Iliotibial Band Syndrome (IT Band)

  • Patellofemoral Pain Syndrome (Runner's Knee)

  • Low back pain (disc herniation/bulge, facet injury, spondylolysis/spondylolisthesis/instability, sciatica/piriformis syndrome)

  • Osgood Schlatter's Disease

  • Sever's Disease (heel pain)

  • Ankle sprains/instability

  • Knee sprains/instability (ACL/MCL/meniscus)

  • Osteoarthritis (bone spurs, degenerative joint)

  • Muscle strains

  • Big toe pain​ (sesmoiditis)

  • Bursitis

  • Greater Trochanteric Pain Syndrome

We offer FREE 15-minute consultations to help you decide if physical therapy is right for you, and to help answer any questions you might have. Contact us to schedule!

Physical Therapy services are currently being offered in-person and online (telehealth). We are located at Prime360's personal training studio within the Maine Athletic Complex in Portland, Maine. 

Depending on your injury you may do just as well with our telehealth services, especially after the initial evaluation. This is a great option for those who are not local to Southern Maine!

Dr. Kelton Cullenberg, PT, DPT is currently licensed to treat patients living in the following states: ME, NH.

Dr. Ashten Cullenberg, PT, DPT is currently licensed to treat patients living in Maine.

There is a national PT Compact license, which Kelton is a part of. He would be able to treat patients living in the following states by quickly transferring his license through this Compact to these states: CO, AZ, WA, OR, TX, UT, ND, NE, OK, IA, MO, AR, LA, MS, KY, TN, WV, VA, NC.


The following states have legislation in place that would make them part of the PT Compact, allowing you to eventually work with Kelton as a patient: MA, RI, CA, MI, OH, PA, AL, MT, SD, WI.

Physical Therapy Contact Form

Please fill out the following form to schedule an appointment.


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