Jason Haas, DO
NPI 1790948008 · Gastroenterology Physician · Chesterfield, MO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Haas, DO is a Gastroenterology Physician provider in Chesterfield, MO (NPI 1790948008).
Provider details
- NPI number
- 1790948008
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- DO
- Sex
- Male
- Sole proprietor
- No
- License
- 2014006550 (MO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,184 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Chronic Care Management Services for Two Or More Chronic Conditions, Additional 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99439 | 211 | $46 |
| Pathology Examination of Tissue Using a Microscope, Intermediate Complexity88305 | 188 | $34 |
| Chronic Care Management Services, First 20 Minutes of Clinical Staff Time Directed By Health Care Professional, Per Calendar Month99490 | 116 | $60 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 86 | $238 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 71 | $175 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 164 | 163 |
| Omeprazole | 81 | 30 |
| Pantoprazole Sodium | 78 | 27 |
| Peg3350/Sod Sulf,bicarb,cl/Kclbrand: Gavilyte-G | 30 | 30 |
| Famotidine | 21 | — |
| Sucralfate | 18 | — |
| Mesalamine | 14 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$85 across 3 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 1008 Greystone Manor PkwyChesterfield, MO 63005-4941Phone: (608) 780-1566
Registry dates
- Enumerated
- 2008-07-07
- Last updated
- 2025-06-08
- Certified
- 2025-06-08
Frequently asked questions
- What is Jason Haas's NPI number?
- Jason Haas's National Provider Identifier (NPI) is 1790948008, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Haas's specialty?
- Jason Haas is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Haas located?
- Jason Haas's practice location on file with NPPES is 121 Saint Lukes Center Dr Ste 406, Chesterfield, MO 63017.
- What is Jason Haas's phone number?
- The practice phone number listed in the NPPES registry for Jason Haas is (314) 529-4900.
- Does Jason Haas accept Medicare?
- Jason Haas is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Haas's NPI active?
- Yes — Jason Haas's NPI (1790948008) is active in the NPPES registry as of the last update on 2025-06-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.