GARETH R WEINER (MD) – Gastroenterology Physician, NPI 1003845249
Gastroenterology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
369 GASTROENTEROLOGY in CO
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Provider Addresses for GARETH R WEINER (MD)
3333S WADSWORTH BLVD D100
LAKEWOOD, CO 802275117
Phone: (303) 205-1090
Fax: (303) 205-5534
Type: Mailing
Washington Street, Thornton, Adams County, Colorado, 80023, United States
THORNTON, CO 802292050
Phone: (303) 252-4442
Fax: (303) 429-6714
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 383 Open Payments records for all available years, with a total value of $158,000.
Total Amount is formed as General ($158,000) + Research ($0) + Ownership ($0) = $158,000.
Last reported payment date: 2024-12-16 • Largest payer in this snapshot: GENZYME CORPORATION ($61,479).
Total Amount
$158,000
General + Research + Ownership
Payments
383
Total payment records
General Amount
$158,000
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-16
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| GENZYME CORPORATION | $61,479 |
| Regeneron Healthcare Solutions, Inc. | $57,933 |
| PFIZER INC. | $18,788 |
| E.R. Squibb & Sons, L.L.C. | $8,061 |
| Takeda Pharmaceuticals U.S.A., Inc. | $4,701 |
Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2010-08-02
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20100802000685 | I | Gastroenterology | CO | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 43239 | Biopsy of esophagus, stomach, and/or upper small bowel using a flexible endoscope | 75 | 75 | $0 |
| 45385 | Removal of polyps or growths of large bowel using an endoscope with mechanical snare | 67 | 67 | $0 |
| 45380 | Biopsy of large bowel using a flexible endoscope | 66 | 66 | $0 |
| 43248 | Insertion of guide wire with dilation of esophagus using a flexible endoscope | 34 | 30 | $0 |
| G0121 | Colorectal cancer screening; colonoscopy on individual not meeting criteria for high risk | 26 | 26 | $0 |
Insurance plans in this area (ZIP 80227)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| GASTROENTEROLOGY | CO | 43235 | Diagnostic examination of esophagus, stomach, and/or upper small bowel using an endoscope | 13 | 13 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Gastroenterology, Internal Medicine | CO | |
| Nurse Practitioner | MO | |
| G A S T R O E N T E R O L O G Y | CO | |
| G A S T R O E N T E R O L O G Y | CO | |
| Physician Assistant | CO | |
| - | CO | |
| Registered Dietitian Or Nutrition Professional | CO | |
| - | CO | |
| - | CO | |
| Physician Assistant | CO |
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