Gareth Weiner, MD
NPI 1003845249 · Gastroenterology Physician · Thornton, CO
Enrolled with Medicare as Practitioner - Gastroenterology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Gareth Weiner, MD is a Gastroenterology Physician provider in Thornton, CO (NPI 1003845249).
Provider details
- NPI number
- 1003845249
- Entity type
- Individual
- Primary specialty
- Gastroenterology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 29683 (CO)
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
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
311 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) |
|---|---|---|
| Biopsy of Large Bowel Using a Flexible Endoscope45380 | 89 | $157 |
| Biopsy of Esophagus, Stomach, And/Or Upper Small Bowel Using a Flexible Endoscope43239 | 64 | $75 |
| Removal of Polyps Or Growths of Large Bowel Using an Endoscope With Mechanical Snare45385 | 62 | $238 |
| Colorectal Cancer Screening; Colonoscopy on Individual at High RiskG0105 | 41 | $168 |
| Insertion of Guide Wire With Dilation of Esophagus Using a Flexible Endoscope43248 | 34 | $136 |
| Colorectal Cancer Screening; Colonoscopy on Individual Not Meeting Criteria for High Risk |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 8 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Sodium, Potassium,mag Sulfatesbrand: Sod Sulf-Potass Sulf-Mag Sulf | 179 | 178 |
| Pantoprazole Sodium | 126 | 42 |
| Sod Sulf/Pot Chloride/Mag Sulfbrand: Sutab | 75 | 75 |
| Omeprazole | 75 | 29 |
| Sod Picosulf/Mag Ox/Citric Acbrand: Clenpiq | 19 | 19 |
| Dicyclomine Hcl | 17 | — |
| Peg 3350/Sod Sulf,chlr/Pot/Mag |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$54,689 across 162 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
Registry dates
- Enumerated
- 2006-07-01
- Last updated
- 2015-11-09
Frequently asked questions
- What is Gareth Weiner's NPI number?
- Gareth Weiner's National Provider Identifier (NPI) is 1003845249, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Gareth Weiner's specialty?
- Gareth Weiner is listed in the NPPES registry with a primary specialty of Gastroenterology Physician (Allopathic & Osteopathic Physicians).
- Where is Gareth Weiner located?
- Gareth Weiner's practice location on file with NPPES is 10001 N Washington St, Thornton, CO 80229-2050.
- What is Gareth Weiner's phone number?
- The practice phone number listed in the NPPES registry for Gareth Weiner is (303) 252-4442.
- Does Gareth Weiner accept Medicare?
- Gareth Weiner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Gareth Weiner's NPI active?
- Yes — Gareth Weiner's NPI (1003845249) is active in the NPPES registry as of the last update on 2015-11-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.