David Marc Leon, M.D.
NPI 1174605737ActiveIndividual· Internal Medicine· Lakewood, CO
Internal Medicine (M.D.) in Lakewood, Colorado, trained at University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) (class of 1988). Their prescriptions cost Medicare Part D more than their services did: $321,833 for 3,107 claims, against $73,443 paid for services in 2024. Glaxosmithkline, LLC. was the largest of 6 companies reporting payments in 2025, $203.83 in all, mostly food and beverage.
Overview
| NPI | 1174605737 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Oct 20, 2006 |
| Last updated in NPPES | Dec 28, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 32198 | CO |
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 - Internal Medicine (CO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 143 |
|---|---|
| Services billed | 1,245 across 35 procedure codes |
| Paid by Medicare | $73,443 |
Part D prescriptions in 2024
| Prescriptions (claims) | 3,107 · 5,642 30-day fills |
|---|---|
| Patients | 229 |
| Total drug cost | $321,833 |
| Generic share | 85% of claims |
Education and affiliations
| Medical school | University of Illinois College of Med (Chi/Peor/Rock/Chm-Urb) |
|---|---|
| Graduation year | 1988 |
| Medicare specialty | Internal Medicine |
| Telehealth | Offers telehealth |
Hospital affiliation
- Intermountain Health Lutheran HospitalWheat Ridge, CO
Industry payments (Open Payments)
- 2025$203.83 · 9 payments from 6 companies
- 2024$1,204 · 22 payments from 10 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Glaxosmithkline, LLC. | $80.23 | 3 |
| Pfizer Inc. | $45.32 | 2 |
| Abbvie Inc. | $23.66 | 1 |
| Inspire Medical Systems, Inc. | $20.99 | 1 |
| Amgen Inc. | $18.71 | 1 |
What the 2025 payments were for
- Food and Beverage$203.83 · 9 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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