Jason HaasDO
Gastroenterology·Chesterfield, MO
Jason Haas, DO is a Gastroenterology provider in Chesterfield, MO affiliated with 1 ambulatory surgery center in MO, as of July 2026.
- NPI1790948008
- Registered2008
- Centers1
- StateMO
- Class of2008
Case volumes, referral patterns, and payer mix live in DataLily AI Insights.
Ambulatory surgery centers
Centers whose service lines match this provider’s. Affiliations change; verify independently.
Education
Education on record as of August 2026.
Jason Haas at a glance
- Provider
- Jason Haas
- Credential
- DO
- Specialty
- Gastroenterology
- Procedures
- Gastroenterology CPT codes
- Location
- Chesterfield, MO
- Medical school
- At Still University of Health Sciences, College of Osteo Med, Kirksville
- Graduated
- 2008
- NPI registered
- 2008
- NPI
- 1790948008
- Snapshot
- July 2026
Identity, specialty, and affiliations change over time. This is not an endorsement, and not clinical, billing, or legal advice. Providers may request corrections at founders@datalilyai.com. Read the DataLily AI data methodology.
Questions
Where does Jason Haas practice?
Jason Haas, DO is based in Chesterfield, MO and is affiliated with 1 ambulatory surgery center: Mason Ridge Ambulatory Surgery Center Dba Gateway Endoscopy Center in Saint Louis, MO. Affiliations reflect the current DataLily AI snapshot (July 2026) and can change.
What is Jason Haas's NPI number?
Jason Haas's National Provider Identifier (NPI) is 1790948008, registered in 2008. Specialty on record: Gastroenterology; credential DO.
Where did Jason Haas go to medical school?
Jason Haas, DO attended At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 2008.
How many Gastroenterology providers in Missouri work at ambulatory surgery centers?
82 Gastroenterology surgeons and proceduralists in Missouri are affiliated with ambulatory surgery centers in DataLily AI's current snapshot, Jason Haas among them. The Missouri Gastroenterology directory lists each one by city with credential, NPI, and center affiliations.
Pilot Analysis
Get the complete Jason Haas analysis
Tell us where to send it. Our team will prepare an analysis of Jason Haas covering case volumes, referral patterns, payer mix, and how specialty peers compare, and email it to you within 5-10 business days. Need it faster? Book a demo.