Gary S. Allen, M.D.
NPI 1154327872ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Littleton, CO
Thoracic Surgery (Cardiothoracic Vascular Surgery) (M.D.) in Littleton, Colorado, trained at Albany Medical College of Union University (class of 1991). Medicare paid $36,787 for services to 29 patients in 2024. Intuitive Surgical, Inc. was the largest of 8 companies reporting payments in 2025, $37,689 in all, mostly education.
Overview
| NPI | 1154327872 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 27, 2005 |
| Last updated in NPPES | Dec 10, 2025 |
| Certified by provider | Dec 10, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | ME80476 | FL |
| Thoracic Surgery (Cardiothoracic Vascular Surgery) | 208G00000X | DR.0073193 | CO |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (CO); Practitioner - Thoracic Surgery (FL) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 29 |
|---|---|
| Services billed | 56 across 16 procedure codes |
| Paid by Medicare | $36,787 |
Education and affiliations
| Medical school | Albany Medical College of Union University |
|---|---|
| Graduation year | 1991 |
| Medicare specialty | Thoracic Surgery |
Medical groups
- Florida Hospital Medical Group IncOrlando, FL · 1,755 clinicians
- Portercare Adventist Health SystemDenver, CO · 774 clinicians
- Florida Hospital Healthcare Partners, IncPalm Coast, FL · 642 clinicians
Hospital affiliation
- Adventhealth WatermanTavares, FL
Other facilities
- Vitas Healthcare of DothanHospice · Dothan, AL
Industry payments (Open Payments)
- 2025$37,689 · 38 payments from 8 companies
- 2024$7,320 · 42 payments from 9 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Intuitive Surgical, Inc. | $36,230 | 20 |
| Edwards Lifesciences Corporation | $1,196 | 9 |
| Abiomed | $57.32 | 2 |
| Pacira Pharmaceuticals Incorporated | $47.83 | 2 |
| Medline Industries LP | $45.86 | 1 |
What the 2025 payments were for
- Education$32,000 · 4 payments
- Travel and Lodging$2,871 · 10 payments
- Food and Beverage$2,017 · 23 payments
- Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$800.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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