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Summary
Dr. Keelen graduated from the Kansas City University of Medicine & Bioscience College of Osteopathic Med in 2003. He works in Denison, TX and 3 other locations and specializes in Emergency Medicine. Dr. Keelen is affiliated with Saint Francis Hospital Muskogee, Saint Francis Hospital, Medical City Plano Hospital, Methodist Charlton Medical Center, Texas Health Presbyterian Hospital Allen, Baylor Scott And White Medical Center Plano and TEXOMA MEDICAL CENTER.
Quick Facts
- 23 years of experience
- University Of Texas Southwestern Medical School
- 1 specialty
- 3 areas of expertise
- 7 hospital affiliations
- 5 office locations
- Male
Office Locations
Dr. Gregory Martin Keelen has 5 locationsCompare with Similar Doctors
 |  |  |  |
| Dr. Gregory Martin Keelen, DO | Christopher Carleo, MD | Dr. William Joseph Harrison, DO | Dr. Ronald James Peron, MD |
| Emergency Medicine | Emergency Medicine | Family Medicine | Family Medicine |
| Accepts New Patients | Accepts New Patients | ||
| 23 Years of Experience | 28 Years of Experience | 45 Years of Experience | 42 Years of Experience |
| No Virtual Visit Option | Virtual Visit Available | No Virtual Visit Option | No Virtual Visit Option |
| Speaks English | Speaks English, Spanish | Speaks English, Spanish | |
| Denison , TX | East Setauket , NY | Durant , OK | Greenville , TX |
| Med School: Kansas City University Of Medicine & Bioscience College Of Osteopathic Med | Med School: Suny Stony Brookhealth | Med School: Oklahoma State Univ Center For Health Sciences College Of Osteopathic Med | Med School: University Of Texas Southwestern Medical Center Medical School |
Current Profile | View Profile | View Profile | View Profile |
Insurance Plans Accepted by Dr. Gregory Martin Keelen
Be sure to verify insurance information directly with your doctor's office, as it may undergo frequent changes.
Medical Specialties
Dr. Gregory Martin Keelen has the following specialty
Specialty Expertise
Dr. Gregory Martin Keelen has the following 3 areas of expertise
Certifications, License, & Education
23 Years Experience
Dr. Gregory Martin Keelen holds an active medical license in the state of Texas.
Medical License
Doctor Of Osteopathy with an active medical license in the state of Texas that expired in 2026.
Education & Training
Residency
Completed their residency at University Of Texas Southwestern Medical School.
Medical School
Graduated from Kansas City University Of Medicine & Bioscience College Of Osteopathic Med in 2003.
NPI Number
Dr. Keelen's NPI number is 1811905227.
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Frequently Asked Questions
- Where is Dr. Gregory Keelen's office located?
- Dr. Gregory Keelen's office is located at 5016 S Us Highway 75, Denison, TX, 75020.
- Does Dr. Gregory Keelen accept virtual/telehealth appointments?
- Dr. Gregory Keelen has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
- Does Dr. Gregory Keelen accept my insurance?
- You can see the insurance plans that Dr. Gregory Keelen accepts on their Vitals profile.
- How can I make an appointment with Dr. Gregory Keelen?
- You can find contact information for Dr. Gregory Keelen here on Vitals.
- Is Dr. Gregory Keelen accepting new patients?
- Dr. Gregory Keelen has not indicated that they accept new patients. Contact their office through their Vitals profile to check for availability.
Data Sources
This provider profile is built using data from:
- NPPES NPI Registry
- State medical licensing boards
- Healthcare system and provider network data
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