DR. DAVID CHAN (MD) – Hematology & Oncology Physician, NPI 1972591378
Hematology & Oncology Physician
Main info
Doctor Profile
Profile Insights
NPPES metrics only — not quality of care.
1,531 HEMATOLOGY/ONCOLOGY in CA
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Provider Addresses for DR. DAVID CHAN (MD)
3285, Skypark Drive, Walteria, Torrance, Los Angeles County, California, 90505, United States
TORRANCE, CA 905055004
Phone: (310) 750-3300
Fax: (310) 750-3381
Mailing address matches the actual address.
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
CMS reports 36 Open Payments records for all available years, with a total value of $3,945.
Total Amount is formed as General ($889) + Research ($3,056) + Ownership ($0) = $3,945.
Last reported payment date: 2024-12-06 • Largest payer in this snapshot: F. Hoffmann-La Roche AG ($3,056).
Total Amount
$3,945
General + Research + Ownership
Payments
36
Total payment records
General Amount
$889
General payments
Research Amount
$3,056
Research funding
Ownership Amount
$0
Ownership interests
Ownership Count
0
Ownership records
Last Payment Date
2024-12-06
Latest reported date
Top Companies
Largest payers in this snapshot
| Company | Amount |
|---|---|
| F. Hoffmann-La Roche AG | $3,056 |
| AstraZeneca Pharmaceuticals LP | $313 |
| Gilead Sciences, Inc. | $116 |
| PFIZER INC. | $106 |
| ARRAY BIOPHARMA INC | $81 |
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: 2004-02-20
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
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 |
|---|---|---|---|---|
| I20040220001011 | I | Hematology/Oncology | CA | 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 |
|---|---|---|---|---|
| J1642 | Injection, heparin sodium, (heparin lock flush), per 10 units | 4,500 | 20 | $0 |
| 85025 | Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count | 923 | 295 | $0 |
| J1626 | Injection, granisetron hydrochloride, 100 mcg | 880 | 13 | $0 |
| 99214 | Established patient office or other outpatient visit, 30-39 minutes | 773 | 344 | $0 |
| J3489 | Injection, zoledronic acid, 1 mg | 537 | 79 | $0 |
Insurance plans in this area (ZIP 90505)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| HEMATOLOGY/ONCOLOGY | CA | 96367 | Infusion into a vein for therapy prevention or diagnosis additional sequential infusion up to 1 hour | 91 | 17 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| Hospitalist, Internal Medicine | CA | |
| - | CA | |
| O T O L A R Y N G O L O G Y | CA | |
| - | CA | |
| Diagnostic Radiology | CA | |
| Hospitalist, Internal Medicine | CA | |
| Emergency Medicine | CA | |
| Family Practice | CA | |
| - | TX | |
| Endocrinology, Internal Medicine | CA |
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