David Greentree, MD
NPI 1972208023ActiveIndividual· Thoracic Surgery (Cardiothoracic Vascular Surgery)· Redding, CA
Thoracic Surgery (Cardiothoracic Vascular Surgery) (MD) in Redding, California, trained at University of Alberta, Faculty of Medicine (class of 1988). Medicare paid $83,170 for services to 65 patients in 2024. Abiomed was the largest of 3 companies reporting payments in 2025, $1,871 in all, mostly travel and lodging.
Overview
| NPI | 1972208023 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | Yes |
| NPI issued | Mar 30, 2023 |
| Last updated in NPPES | Mar 30, 2023 |
| Certified by provider | Mar 30, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Thoracic Surgery (Cardiothoracic Vascular Surgery) Primary | 208G00000X | C185152 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Thoracic Surgery (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 65 |
|---|---|
| Services billed | 164 across 41 procedure codes |
| Paid by Medicare | $83,170 |
Education and affiliations
| Medical school | University of Alberta, Faculty of Medicine |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Thoracic Surgery |
Medical group
- Dignity HealthRedding, CA · 86 clinicians
Hospital affiliation
- Mercy Medical Center ReddingRedding, CA
Industry payments (Open Payments)
- 2025$1,871 · 15 payments from 3 companies
- 2024$381.58 · 6 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abiomed | $1,652 | 9 |
| Medtronic, Inc. | $172.97 | 4 |
| Edwards Lifesciences Corporation | $46.34 | 2 |
What the 2025 payments were for
- Travel and Lodging$1,257 · 3 payments
- Food and Beverage$614.31 · 12 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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