David Sun, M.D.
NPI 1972874931 · Hematology & Oncology Physician · Sacramento, CA
Enrolled with Medicare as Practitioner - Medical Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
David Sun, M.D. is a Hematology & Oncology Physician provider in Sacramento, CA (NPI 1972874931).
Provider details
- NPI number
- 1972874931
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Student, Health Care
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
14 yrs in NPPES registry
- Profile completeness33% of score
83% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 28 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Prednisone | 321 | 61 |
| Abiraterone Acetate | 184 | 27 |
| Enzalutamidebrand: Xtandi | 154 | 23 |
| Hydroxyurea | 120 | 36 |
| Lenalidomide | 104 | 19 |
| Dexamethasone | 72 | 26 |
| Bicalutamide | 57 | 30 |
| Ondansetron Hcl | 48 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$16 across 1 record (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
- 2012-01-23
- Last updated
- 2022-02-04
Frequently asked questions
- What is David Sun's NPI number?
- David Sun's National Provider Identifier (NPI) is 1972874931, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is David Sun's specialty?
- David Sun is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is David Sun located?
- David Sun's practice location on file with NPPES is 4501 X St, Sacramento, CA 95817-2229.
- What is David Sun's phone number?
- The practice phone number listed in the NPPES registry for David Sun is (916) 734-5959.
- Does David Sun accept Medicare?
- David Sun is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is David Sun's NPI active?
- Yes — David Sun's NPI (1972874931) is active in the NPPES registry as of the last update on 2022-02-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.