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

Gregory L. Shannon, MD

Individual provider Specialist · NPI 1730148495

Gregory L. Shannon, MD is an Internal Medicine in Sugar Land, Texas. Graduated from Northwestern University Feinberg Medical School in 1996, 30 years ago. Practices with Gastroenterology Associates of Texas PA, a 2-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Illinois, North Carolina and Texas.

Years since qualifying
30
Trained at
Northwestern University Feinberg Medical School
Licensed in
IL, NC, TX
In the registry since
2006
Specialties on file
3
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

17510 W Grand Pkwy S #220
Sugar Land, TX 77479-2645
Phone: (281) 201-1338
Fax: (281) 201-1353
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence K7479 (TX)
Specialist Taxonomy 174400000X · Licence 036-107804 (IL)
Specialist Taxonomy 174400000X · Licence 2001-1396 (NC)

Record details

NPI number1730148495
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 21, 2006
Last updated in NPPESSeptember 26, 2023
Certification dateSeptember 26, 2023
Mailing address17510 W Grand Pkwy S, 220, Sugar Land, TX 77479-2645

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesGASTROENTEROLOGY
Medical schoolNORTHWESTERN UNIVERSITY FEINBERG MEDICAL SCHOOL
Graduated 1996 (30 years in practice)
Group practice Gastroenterology Associates Of Texas Pa — 2 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations4 on file with Medicare

Other providers in Sugar Land