Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Greydon Blair Callaway, PT, DPT

Individual provider Physical Therapist · NPI 1821122078

Greydon Blair Callaway, PT, DPT is registered under Physical Therapist in Private Practice in Dallas, Texas. Graduated from University of Oklahoma College of Medicine in 1999, 27 years ago. Practices with 3DPT, PLLC, an 18-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
27
Trained at
University of Oklahoma College of Medicine
Licensed in
TX
In the registry since
2007
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

3500 Oak Lawn Ave Ste 240
Dallas, TX 75219-4329
Phone: (214) 528-3378
Fax: (214) 528-3379
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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 1148889 (TX)

Record details

NPI number1821122078
Entity typeIndividual (Type 1)
GenderMale
Credentials PT , DPT
Sole proprietorNo
NPI enumeratedMarch 16, 2007
Last updated in NPPESApril 8, 2025
Certification dateApril 8, 2025

Medicare enrollment

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

Medicare specialtyPHYSICAL THERAPIST IN PRIVATE PRACTICE
Medical schoolUNIVERSITY OF OKLAHOMA COLLEGE OF MEDICINE
Graduated 1999 (27 years in practice)
Group practice 3dpt, Pllc — 18 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Colleagues at 3DPT, PLLC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 18 clinicians in the practice; 12 are shown here.

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