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

Gregory M Keelen, DO

Individual provider Emergency Medicine Physician · NPI 1811905227

Gregory M Keelen, DO is an Emergency Medicine in Denison, Texas. Graduated from University of Kansas School of Med (KC/WICH/SAL) in 2003, 23 years ago. Practices with Ies Central Texas PLLC, a 33-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
23
Trained at
University of Kansas School of Med (KC/WICH/SAL)
Licensed in
TX
In the registry since
2006
What do these letters mean?
DO — Doctor of Osteopathic Medicine
A fully licensed physician, trained like an MD with additional musculoskeletal training. Equivalent practice rights in all 50 states.

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Practice location Address checks out

5016 US-75 Tmc Emergency Dept
Denison, TX 75020
Phone: (214) 433-9602
Fax: (214) 433-9602
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence M1822 (TX)

Record details

NPI number1811905227
Entity typeIndividual (Type 1)
GenderMale
Credentials DO
Sole proprietorNo
NPI enumeratedAugust 3, 2006
Last updated in NPPESJanuary 22, 2024
Certification dateJanuary 19, 2024
Mailing address5016 Us Hwy 75, Denison, TX 75020-4584

Medicare enrollment

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

Medicare specialtyEMERGENCY MEDICINE
Medical schoolUNIVERSITY OF KANSAS SCHOOL OF MED (KC/WICH/SAL)
Graduated 2003 (23 years in practice)
Group practice Ies Central Texas Pllc — 33 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Denison