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Edit this profileWhere to find Jason Haas, DO
- Chesterfield location main office
17298 N Outer 40 Rd Ste 406, Chesterfield, MO 63005 - Chesterfield location
1008 Greystone Manor Pkwy, Chesterfield, MO 63005
About Dr. Haas
Jason Haas, DO practices gastroenterology in Chesterfield, MO. Jason is a 2008 graduate of At Still University of Health Sciences, College of Osteo Med, Kirksville. According to Medicare claims data, Jason cared for 833 Medicare patients across 1,184 services. The services billed most often include chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month, pathology examination of tissue using a microscope, intermediate complexity, and chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month. The provider's National Provider Identifier (NPI) is 1790948008.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (314) 529-4900
- Email not available
Is this your home address or personal number? Hide it
Practice Locations
17298 N OUTER 40 RD STE 406
Chesterfield, MO 63005
1008 Greystone Manor Pkwy
Chesterfield, MO 63005
Conditions Commonly Evaluated or Treated
Within Gastroenterology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Chronic conditions
Liver health
Specialized and cancer
Wound care
Most searched conditions
- Acid reflux
- Celiac disease
- Crohn's disease
- Hemorrhoids
- IBS
- Swallowing difficulties
- Ulcerative colitis
Biliary and pancreas
Colon and anorectal
Esophagus and swallowing
Functional bowel and motility
Liver
- Ascites
- Autoimmune hepatitis
- Cirrhosis
- Fatty liver disease
- Hemochromatosis
- Hepatitis B
- Hepatitis C
- Portal hypertension
Stomach and duodenum
Bowel & Colon
Digestive Symptoms
Gallbladder & Bile Ducts
Procedures & services
Advanced endoscopy
Biliary and pancreatic endoscopy
Capsule and physiology testing
- Ambulatory reflux monitoring
- Capsule endoscopy
- Hydrogen and methane breath testing
- Anorectal manometry
- Esophageal manometry
Chronic illness
Clinical Nutrition
Diagnostic Testing
Digestive
General surgery
Infection & Microbiology Tests
Liver procedures
Lower endoscopy
- Colon polyp removal
- Diagnostic colonoscopy
- Endoscopic control of gastrointestinal bleeding
- Flexible sigmoidoscopy
Nursing care
Nutrition & Digestion
Upper endoscopy
- Endoscopic mucosal resection
- Esophageal biopsy
- Esophageal dilation
- Stomach biopsy
- Endoscopic submucosal dissection
Most searched procedures
Treatments
Procedures Most Often Billed to Medicare
1,184 services · 833 patients · 21 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Removal of polyps or growths of large bowel using an endoscope with mechanical snare | Procedure | 45385 |
86 | More often than most peers in Gastroenterology |
| Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43239 |
60 | As often as other peers in Gastroenterology |
| Biopsy of large bowel using a flexible endoscope | Procedure | 45380 |
37 | As often as other peers in Gastroenterology |
| Diagnostic exam of esophagus, stomach, and/or upper small bowel using a flexible endoscope | Procedure | 43235 |
28 | More often than most peers in Gastroenterology |
| Balloon dilation of esophagus, stomach, and/or upper small bowel using a flexible endoscope, less than 3.0 cm | Procedure | 43249 |
22 | As often as other peers in Gastroenterology |
| Diagnostic exam of large bowel using a flexible endoscope | Procedure | 45378 |
13 | Less often than most peers in Gastroenterology |
| Measurement of hydrogen in breath to test for stomach and bowel symptoms | Treatment | 91065 |
16 | Less often than most peers in Gastroenterology |
| Chronic care management services for two or more chronic conditions, additional 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99439 |
211 | As often as other peers in Gastroenterology |
| Pathology examination of tissue using a microscope, intermediate complexity | Lab test | 88305 |
188 | As often as other peers in Gastroenterology |
| Chronic care management services, first 20 minutes of clinical staff time directed by health care professional, per calendar month | Office visit | 99490 |
116 | As often as other peers in Gastroenterology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other gastroenterologists at this location 8
Same specialty, same street address — most likely the same department or group.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other gastroenterologists in Chesterfield 7
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Other providers in the same specialty who trained at the same institution.
Class of 2008 at At Still University of Health Sciences, College of Osteo Med, Kirksville 8
Providers who graduated from the same medical school in the same year.
Also performs Removal of polyps or growths of large bowel using an endoscope with mechanical snare 7
Providers in MO who bill this service to Medicare most often.
Common questions
What does Dr. Haas specialize in?
Dr. Haas is a gastroenterologist in Chesterfield, MO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Gastroenterology”.
NPI registry
Where is Dr. Haas located?
Dr. Haas is listed at 17298 N Outer 40 Rd Ste 406, Chesterfield, MO 63005. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Haas's phone number?
The number on file is (314) 529-4900. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Haas's NPI number?
Dr. Haas's National Provider Identifier is 1790948008. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Haas go to medical school?
Dr. Haas attended At Still University of Health Sciences, College of Osteo Med, Kirksville, graduating in 2008. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Haas been practicing?
Dr. Haas has 18 years experience. Calculated from a graduation year of 2008, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Haas do most often?
According to Medicare billing data, Dr. Haas performs procedures including removal of polyps or growths of large bowel using an endoscope with mechanical snare, biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope and biopsy of large bowel using a flexible endoscope; provides treatments such as measurement of hydrogen in breath to test for stomach and bowel symptoms, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Haas confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Haas. If this is you, claiming it is free.
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