NPPES file of Aug 9, 2026

Jason Chen

Oncology Pharmacist · Duarte, CA

Jason Chen is an oncology pharmacist with a practice address in Duarte, California, and NPI 1790246759, issued on Mar 30, 2019. Check the license (California 5151191, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.

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

NPPES recordNPPES file of Aug 9, 2026
1790246759
Name
Jason Chen
Primary taxonomy
Oncology Pharmacist 1835X0200X
License numbers
5151191 CA
3155645 CA
Self-reported in NPPES; status is on the state search
Practice location
1500 Duarte RD, Duarte, CA 91010
Phone
(626) 218-3298
Enumerated
Mar 30, 2019
Record last updated
Mar 30, 2019 (not updated in 7 years: call before relying on the address or phone)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest oncology pharmacist records → All 287 in California → Look up another NPI →

Also registered at 1500 Duarte RD

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

  1. Chelsea Abad, CRNP, AGPCNP - BCGerontology Nurse Practitioner1952848137
  2. Wajidah Abdul-KhabirHospitalist Physician1215323522
  3. Farah Abdulla, MDDermatology Physician1093934390
  4. Megan Abel, PA-CPhysician Assistant1104100619
  5. Michelle Afkhami, M.D.Hematology (Pathology) Physician1326230228
  6. Vaibhav Agrawal, M.D.Hematology & Oncology Physician1538402565

Verify Jason Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license 5151191    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
Find the California license search

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Jason Chen among 287 oncology pharmacist records in California

Jason Chen is one of 287 oncology pharmacist records with a practice address in California. 9% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2019, is newer than 50% of them.

  • NPI issued2019 · 50% of these records are older, 44% newer
  • In a Medicare fileNo · 9% of these records are
  • In the CMS Doctors and Clinicians fileNo · 0% of these records are
  • Record last updated2019 · 60% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1835X0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

16 oncology pharmacist records list a practice address in Duarte

They are 16 of the 1,287 NPPES records with a practice address in Duarte, and 287 oncology pharmacist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 287 in California → Every provider in Duarte → Oncology Pharmacist nationwide →

The 8 oncology pharmacist records with the nearest ZIP codes

  1. Kathy ChoiDuarte, CA 910101851275275
  2. Cynthia Fu, PHARMD, BCOPDuarte, CA 910101851225023
  3. Svetlana GoutnikDuarte, CA 910101811867013
  4. Ishmum Hasan, PHARMDDuarte, CA 910101194695395
  5. Gregory Hendrix, PHARMDDuarte, CA 910101053448605
  6. Jason HsuDuarte, CA 910101598626566
  7. Vanessa HsuDuarte, CA 910101417899881
  8. Lillian LamDuarte, CA 910101932055100

Common questions

What is Jason Chen's NPI number?

Jason Chen's National Provider Identifier (NPI) is 1790246759, issued on Mar 30, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Jason Chen located?

The NPPES record lists a practice address at 1500 Duarte RD, Duarte, CA, 91010. Phone: (626) 218-3298. Providers update this record themselves, so call before visiting.

How can I verify Jason Chen's license?

NPPES lists California license number 5151191, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity 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. 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.