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

James Parker Gregg, MD

Individual provider Diagnostic Radiology Physician · NPI 1518100049

James Parker Gregg, MD is a Diagnostic Radiology in Houston, Texas. Graduated from University of Texas Medical Branch at Galveston in 2002, 24 years ago. Practices with Singleton Associates PA, a 795-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
24
Trained at
University of Texas Medical Branch at Galveston
Licensed in
TX
In the registry since
2009
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

7026 Old Katy Rd Ste 276
Houston, TX 77024-2187
Phone: (713) 621-7436
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1 Baylor Plz # Ms 360, Houston, TX 77030-3411 — (713) 798-6187

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence N5694 (TX)
Vascular & Interventional Radiology Physician Taxonomy 2085R0204X · Licence N5694 (TX)

Record details

NPI number1518100049
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 14, 2009
Last updated in NPPESApril 6, 2018

Medicare enrollment

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

Medicare specialtyDIAGNOSTIC RADIOLOGY
Medical schoolUNIVERSITY OF TEXAS MEDICAL BRANCH AT GALVESTON
Graduated 2002 (24 years in practice)
Group practice Singleton Associates Pa — 795 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations30 on file with Medicare

Other providers in Houston