Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. John Ross Knowlton, PT, DPT

Individual provider Physical Therapist · NPI 1316537566

Dr. John Ross Knowlton, PT, DPT is a Physical Therapist in Private Practice in Columbia, Maryland. Qualified in 2020, 6 years ago. Practices with Centers for Advanced Orthopaedics LLC, a 598-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
6
Licensed in
MD
In the registry since
2021
Specialties on file
2
What do these letters mean?
PT — Physical Therapist
A licensed therapist who treats movement, pain and injury.
DPT — Doctor of Physical Therapy
The doctoral degree now required to enter physical therapy practice.

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Practice location Address checks out

9030 State Route 108 Ste B
Columbia, MD 21045-1990
Phone: (410) 989-3833
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Physical Therapist (primary) Taxonomy 225100000X · Licence 28257 (MD)
Physical Therapist Taxonomy 225100000X (MD)

Record details

NPI number1316537566
Entity typeIndividual (Type 1)
GenderMale
Credentials PT , DPT
Sole proprietorYes
NPI enumeratedJanuary 21, 2021
Last updated in NPPESJanuary 21, 2021
Certification dateJanuary 20, 2021

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Group practice Centers For Advanced Orthopaedics Llc — 598 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Columbia