NPPES file of Aug 9, 2026

David Sun, M.D.

Hematology & Oncology Physician · Sacramento, CA

David Sun, M.D. is a hematology & oncology physician with a practice address in Sacramento, California, and NPI 1972874931, issued on Jan 23, 2012. Check the license (California A124714, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1972874931
Name
David Sun
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License numbers
A124714 CA
25MA09071700 NJ
Self-reported in NPPES; status is on the state search
Practice location
4501 X St, Sacramento, CA 95817
Phone
(916) 734-5959
Enumerated
Jan 23, 2012
Record last updated
Feb 4, 2022
Medicaid ID
1467459222 CA
Medicare enrollment
Enrolled (PECOS I20161006002216); accepts Medicare assignment
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 4501 X St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Kristine Ahlberg, RNOncology Registered Nurse1982086567
  2. Danielle Baham, RDRegistered Dietitian1427533249
  3. Cheryl Breed, NPNurse Practitioner1760408959
  4. Laura Brennan, F.N.PFamily Nurse Practitioner1235389826
  5. Radha CanepaInternal Medicine Physician1760767511
  6. Sally Denardo, M.D.Internal Medicine Physician1568447878

Verify David Sun in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A124714    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the California license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

95% more Medicare Part D claims than the average hematology & oncology physician in 2024

1,707 Medicare Part D claims for 274 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. 121 claims were for opioids.

  1. David Sun1,707
  2. Specialty average877

Most prescribed

  1. Prednisone321 claims
  2. Abiraterone Acetate184 claims
  3. Xtandi154 claims
  4. Hydroxyurea120 claims
  5. Lenalidomide104 claims
  6. Dexamethasone72 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $15.95

1 payment: food and beverage; the largest payer was ConvaTec Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. David Sun$15.95
  2. Specialty average$7,481.41

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Permanente Medical Group IncSacramento, CA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

David Sun among 1,583 hematology & oncology physician records in California

David Sun, M.D. is one of 1,583 hematology & oncology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 75% of them.

  • NPI issued2012 · 75% of these records are older, 21% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2009 · median 2003 among the 1,124 with a school on file
  • Record last updated2022 · 58% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology & Oncology Physician providers in California

There are 1,583 hematology & oncology physician records in California.

All 1,583 in California → Every provider in Sacramento → Hematology & Oncology Physician nationwide →

The 8 hematology & oncology physician records with the nearest ZIP codes

  1. Mehrad Abedi, M.D.Sacramento, CA 958171467459222
  2. Helen Chew, M.D.Sacramento, CA 958171801870142
  3. David Gandara, M.D.Sacramento, CA 958171528042587
  4. Richard Guy, M.D.Sacramento, CA 958171578545190
  5. Kit Lam, M.D., PH.D.Sacramento, CA 958171306829577
  6. Primo Lara, M.D.Sacramento, CA 958171972585743
  7. Derick Lau, M.D., PH.D.Sacramento, CA 958171801879077
  8. Robert O'Donnell, M.D., PH.D.Sacramento, CA 958171386627586

Common questions

What is David Sun, M.D.'s NPI number?

David Sun, M.D.'s National Provider Identifier (NPI) is 1972874931, issued on Jan 23, 2012. An NPI identifies a provider in billing; it is not a license.

Where is David Sun, M.D. located?

The NPPES record lists a practice address at 4501 X St, Sacramento, CA, 95817. Phone: (916) 734-5959. Providers update this record themselves, so call before visiting.

How can I verify David Sun, M.D.'s license?

NPPES lists California license number A124714, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

How much does David Sun, M.D. prescribe under Medicare Part D?

In 2024, David Sun, M.D. had 1,707 Medicare Part D claims for 274 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.