William Eng Lee, M.D.
NPI 1639173693ActiveIndividual· Internal Medicine, Hematology & Oncology· Denver, CO
Internal Medicine, Hematology & Oncology (M.D.) in Denver, Colorado, trained at University of Pittsburgh School of Medicine (class of 1990). Their prescriptions cost Medicare Part D more than their services did: $633,612 for 161 claims, against $17,667 paid for services in 2024. Abbvie Inc. was the largest of 12 companies reporting payments in 2025, $891.97 in all, mostly food and beverage.
Overview
| NPI | 1639173693 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jun 8, 2005 |
| Last updated in NPPES | May 2, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | 32779 | CO |
| Internal Medicine, Medical Oncology | 207RX0202X | 32779 | 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 - Hematology (NM) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 93 |
|---|---|
| Services billed | 153 across 7 procedure codes |
| Paid by Medicare | $17,667 |
Part D prescriptions in 2024
| Prescriptions (claims) | 161 · 255 30-day fills |
|---|---|
| Patients | 57 |
| Total drug cost | $633,612 |
| Generic share | 65% of claims |
Education and affiliations
| Medical school | University of Pittsburgh School of Medicine |
|---|---|
| Graduation year | 1990 |
| Medicare specialty | Hematology |
Medical groups
- Las Cruces Physician Practices, LLCLas Cruces, NM · 109 clinicians
- Phc-Las Cruces IncLas Cruces, NM · 20 clinicians
Hospital affiliation
- Memorial Medical CenterLas Cruces, NM
Industry payments (Open Payments)
- 2025$891.97 · 18 payments from 12 companies
- 2024$795.97 · 8 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $217.77 | 2 |
| Glaxosmithkline, LLC. | $187.71 | 2 |
| Genmab U.S., Inc. | $120.89 | 1 |
| Novartis Pharmaceuticals Corporation | $92.40 | 3 |
| E.R. Squibb & Sons, L.L.C. | $79.97 | 1 |
What the 2025 payments were for
- Food and Beverage$891.97 · 18 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 71 hematologist-oncologists in Denver · All hematologist-oncologists in Colorado