Public provider listing

Jason Haas, DO

4.9(381)

Jason Haas, DO is a Gastroenterologist practice in Chesterfield, MO. Rated 4.9 from 381 public reviews. Phone and website are listed.

Address

121 St Luke's Center Dr Ste 406, Building A, Chesterfield, MO 63017
Chesterfield, MO 63017

Phone

(314) 529-4900

Website

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Public hours

Listed hours

As published
Monday
8AM–4PM
Tuesday
8AM–4PM
Wednesday
8AM–4PM
Thursday
8AM–4PM
Friday
8AM–4PM
Saturday
Closed
Sunday
Closed
Verified listing details

Credentials, affiliations, and coverage

Checked Aug 28, 2026

Credentials and licenses

  • DO

Affiliations

  • Gateway Gastroenterology

Sources

Federal data is attributed to its source and does not imply CMS endorsement.

Public media

Newest photos

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Gateway Gastroenterology
Public reviews

Newest reviews

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Review details are not available here. The listing reports 381 public reviews.

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