David Chan, MD
NPI 1972591378 · Hematology & Oncology Physician · Torrance, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Chan, MD is a Hematology & Oncology Physician provider in Torrance, CA (NPI 1972591378).
Provider details
- NPI number
- 1972591378
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G43553 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,994 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 776 | $8 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 664 | $137 |
| Enhancing Oncology Model (eom) Monthly Enhanced Oncology Services (meos) Payment for Eom Enhanced ServicesM0010 | 329 | $69 |
| Infusion Into a Vein for Therapy, Prevention, Or Diagnosis, Additional Sequential Infusion, 1 Hour Or Less96367 | 317 | $32 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 236 | $193 |
| Administration of Chemotherapy Into Vein, 1 Hour Or Less |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 320 | 99 |
| Raloxifene Hcl | 97 | 41 |
| Letrozole | 78 | 26 |
| Abemaciclibbrand: Verzenio | 47 | — |
| Trazodone Hcl | 41 | 13 |
| Tamoxifen Citrate | 34 | 11 |
| Elacestrant Hclbrand: Orserdu | 32 | — |
| Exemestane | 29 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$330 across 13 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-10-10
- Last updated
- 2019-12-27
- Certified
- 2019-12-27
Frequently asked questions
- What is David Chan's NPI number?
- David Chan's National Provider Identifier (NPI) is 1972591378, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Chan's specialty?
- David Chan is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Chan located?
- David Chan's practice location on file with NPPES is 3285 Skypark Dr, Torrance, CA 90505-5004.
- What is David Chan's phone number?
- The practice phone number listed in the NPPES registry for David Chan is (310) 750-3300.
- Does David Chan accept Medicare?
- David Chan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Chan's NPI active?
- Yes — David Chan's NPI (1972591378) is active in the NPPES registry as of the last update on 2019-12-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.