Greydon Blair Callaway, PT, DPT
Physical Therapist · Dallas, TX
Greydon Blair Callaway, PT, DPT is a physical therapist with a practice address in Dallas, Texas, and NPI 1821122078, issued on Mar 16, 2007. Check the license (Texas 1148889, as entered in NPPES) with the Texas board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Greydon Blair Callaway
- Credential
- PT, DPT
- Primary taxonomy
- Physical Therapist 225100000X
- License number
- 1148889 TX
Self-reported in NPPES; status is on the state search - Practice location
- 3500 Oak Lawn Ave Ste 240, Dallas, TX 75219
- Phone
- (214) 528-3378
- Enumerated
- Mar 16, 2007
- Record last updated
- Apr 8, 2025
- Fax
- (214) 528-3379
- Medicare enrollment
- Enrolled (PECOS I20081120000870); accepts Medicare assignment
- Medical or professional school
- University Of Oklahoma College Of Medicine, 1999
- Entity
- Type 1 · individual
8 nearest physical therapist records → All 15,190 in Texas → Look up another NPI →
Also registered at 3500 Oak Lawn Ave Ste 240
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Brandt Gros, PTPhysical Therapist1033708987
- Gabriella Mengistu, PT, DPTPhysical Therapist1932778842
- Antonio PerezPhysical Therapist1669238812
- Jonathan Valentine, PTAPhysical Therapy Assistant1972442937
Verify Greydon Blair Callaway in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Texas board licenses this profession
Search for license 1148889Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- 3dpt, PLLCDallas, TX
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Greydon Blair Callaway among 15,190 physical therapist records in Texas
Greydon Blair Callaway, PT, DPT is one of 15,190 physical therapist records with a practice address in Texas. 28% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 11% of them.
- NPI issued2007 · 11% of these records are older, 81% newer
- In a Medicare fileYes · 28% of these records are
- In the CMS Doctors and Clinicians fileYes · 30% of these records are
- Graduated1999 · median 2018 among the 4,480 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 225100000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
963 physical therapist records list a practice address in Dallas
They are 963 of the 36,304 NPPES records with a practice address in Dallas, and 15,190 physical therapist records in Texas.
All 15,190 in Texas → Every provider in Dallas → Physical Therapist nationwide →
The 8 physical therapist records with the nearest ZIP codes
- Rebecca Bernhardt, P.T.Dallas, TX 752191821350208
- Lisa Boudreaux, MPTDallas, TX 752191043393028
- Carling Butler, PT, DPT, MSCIDallas, TX 752191538541974
- Maggie Cappel, PT, DPTDallas, TX 752191912312281
- Charmaine Cooper, P.T.Dallas, TX 752191902022684
- Matias Haller, DPTDallas, TX 752191255811154
- Brenda House, PT, MSPT, CCCEDallas, TX 752191699037226
- Allison Kattato, PT, DPTDallas, TX 752191639682446
Common questions
What is Greydon Blair Callaway, PT, DPT's NPI number?
Greydon Blair Callaway, PT, DPT's National Provider Identifier (NPI) is 1821122078, issued on Mar 16, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Greydon Blair Callaway, PT, DPT located?
The NPPES record lists a practice address at 3500 Oak Lawn Ave Ste 240, Dallas, TX, 75219. Phone: (214) 528-3378. Providers update this record themselves, so call before visiting.
How can I verify Greydon Blair Callaway, PT, DPT's license?
NPPES lists Texas license number 1148889, as entered by the provider. Search the Texas board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.