NPPES file of Aug 9, 2026

Justin Chen

Hematology & Oncology Physician · Sacramento, CA

Justin Chen is a hematology & oncology physician with a practice address in Sacramento, California, and NPI 1326433244, issued on Mar 30, 2015. Check the license (California A144746, 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
1326433244
Name
Justin Chen
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A144746 CA
Self-reported in NPPES; status is on the state search
Practice location
4501 X St Ste 3016, Sacramento, CA 95817
Phone
(650) 723-6661
Enumerated
Mar 30, 2015
Record last updated
May 26, 2020 (not updated in 6 years: call before relying on the address or phone)
Fax
(916) 734-5959
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 hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 4501 X St Ste 3016

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

  1. Mehrad Abedi, M.D.Hematology & Oncology Physician1467459222
  2. Joanna Eldredge, M.D.Student in an Organized Health Care Education/Training Program1548656713
  3. Naseem Esteghamat, M.D.Hematology & Oncology Physician1437491222
  4. Jacqueline Hsieh-WongInternal Medicine Physician1285083121
  5. Brian Jonas, M.D., PHDHematology & Oncology Physician1558542209
  6. Guneet Kaleka, MD, MPAInternal Medicine Physician1558823732

Verify Justin Chen in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A144746    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.

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Industry payments in 2024: $30.73

1 payment: food and beverage; the largest payer was Genentech USA, 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. Justin Chen$30.73
  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.

Justin Chen among 1,583 hematology & oncology physician records in California

Justin Chen 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 2015, is newer than 84% of them.

  • NPI issued2015 · 84% of these records are older, 13% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileNo · 71% of these records are
  • Record last updated2020 · 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 Justin Chen's NPI number?

Justin Chen's National Provider Identifier (NPI) is 1326433244, issued on Mar 30, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Justin Chen located?

The NPPES record lists a practice address at 4501 X St Ste 3016, Sacramento, CA, 95817. Phone: (650) 723-6661. Providers update this record themselves, so call before visiting.

How can I verify Justin Chen's license?

NPPES lists California license number A144746, 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.

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.