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

John Robert Mathias, MD

Individual provider Gastroenterology Physician · NPI 1639239643

John Robert Mathias, MD is a Gastroenterology Physician in Houston, Texas. Licensed in Texas. Registered with an NPI since 2006.

Licensed in
TX
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

7501 Fannin Ste 705
Houston, TX 77054
Phone: (713) 795-4843
Fax: (713) 795-4839
Show map & directions

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

Specialties & licences

Gastroenterology Physician (primary) Taxonomy 207RG0100X · Licence H5378 (TX)

Record details

NPI number1639239643
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 11, 2006
Last updated in NPPESMarch 19, 2008
Mailing address7501 Fannin Ste 705, Houston, TX 77054

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