DR. WILLIAM ENG LEE (M.D.) – Hematology & Oncology Physician, NPI 1639173693
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
52 HEMATOLOGY in CO
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Provider Addresses for DR. WILLIAM ENG LEE (M.D.)
Huron Street, Thornton, Adams County, Colorado, 80260, United States
THORNTON, CO 802605426
Phone: (303) 650-4042
Fax: (303) 650-4046
Type: Mailing
National Jewish Health, 1400, Jackson Street, Denver, Denver County, Colorado, 80206, United States
DENVER, CO 802062761
Phone: (303) 388-4461
Fax: (303) 270-2174
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 12 Open Payments records for all available years, with a total value of $1,216.
Total Amount is formed as General ($1,216) + Research ($0) + Ownership ($0) = $1,216.
Last reported payment date: 2024-11-23 • Largest payer in this snapshot: Genmab U.S., Inc. ($535).
Total Amount
$1,216
General + Research + Ownership
Payments
12
Total payment records
General Amount
$1,216
General payments
Research Amount
$0
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-11-23
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| Genmab U.S., Inc. | $535 |
| AstraZeneca Pharmaceuticals LP | $371 |
| GlaxoSmithKline, LLC. | $122 |
| E.R. Squibb & Sons, L.L.C. | $118 |
| Progenics Pharmaceuticals, Inc. | $46 |
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: 2021-09-17
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking 2 Medicare enrollment records; no due dates published yet.
Enrollment records
2
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 |
|---|---|---|---|---|
| I20050516000787 | I | Hematology/Oncology | CO | TBD |
| I20210917000407 | I | Hematology | NM | 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 |
|---|---|---|---|---|
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 68 | 60 | $0 |
| 99215 | Established patient office or other outpatient visit, 40-54 minutes | 36 | 27 | $0 |
| 99213 | Established patient office or other outpatient visit, 20-29 minutes | 17 | 17 | $0 |
Insurance plans in this area (ZIP 80260)
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Group practice members
| Name | Specialty | State |
|---|---|---|
| - | NM | |
| Family Practice | NM | |
| Nurse Practitioner | NM | |
| Family Practice | NM | |
| Clinical Psychologist | NM | |
| Family Practice | NM | |
| H E M A T O L O G Y/ O N C O L O G Y | CA | |
| Internal Medicine, Medical Oncology | NM | |
| Radiation Oncology | AK | |
| - | CT |
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