Individual provider · Type 1 NPI

Jason Haas, DO

Gastroenterology Physician · Chesterfield, MO

NPI number 1790948008 Active

Practice location

17298 N Outer 40 Rd Ste 406
Chesterfield, MO 63005-1455

Call (314) 529-4900 Map

Fax (314) 434-2679

Mailing address

17298 N Outer 40 Rd Ste 200
Chesterfield, MO 63005-1456

Specialties and licenses

TaxonomyCodeLicense
Gastroenterology Physician Primary 207RG0100X2014006550 (MO)

Gastroenterology Physician: An internist who specializes in diagnosis and treatment of diseases of the digestive organs including the stomach, bowels, liver and gallbladder. This specialist treats conditions such as abdominal pain, ulcers, diarrhea, cancer and jaundice and performs complex diagnostic and therapeutic procedures using endoscopes to visualize internal organs.

2 other providers at this address

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About NPI 1790948008

Jason Haas, DO's National Provider Identifier is 1790948008, issued on Jul 7, 2008. The primary taxonomy on file is Gastroenterology Physician (207RG0100X), and the practice location is in Chesterfield, MO. The record was last updated on Oct 21, 2026.