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

Individual provider Gastroenterology Physician · NPI 1689017105

Dr. Gregory Brennan, MD is a Gastroenterology in Mansfield, Texas. Graduated from Tufts University School of Medicine in 2013, 13 years ago. Practices with Texas Digestive Disease Consultants, PLLC, a 615-clinician group and accepts Medicare assignment. Licensed in Texas.

Years since qualifying
13
Trained at
Tufts University School of Medicine
Licensed in
TX
In the registry since
2013
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

647 N Miller Rd Ste B
Mansfield, TX 76063-6180
Phone: (817) 760-7969
Fax: (817) 760-7976
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence Q4044 (TX)

Record details

NPI number1689017105
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedApril 15, 2013
Last updated in NPPESAugust 25, 2021
Certification dateAugust 25, 2021
Mailing addressPo Box 35629, Dallas, TX 75235-0629

Medicare enrollment

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

Medicare specialtyGASTROENTEROLOGY
Medical schoolTUFTS UNIVERSITY SCHOOL OF MEDICINE
Graduated 2013 (13 years in practice)
Group practice Texas Digestive Disease Consultants, Pllc — 615 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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