NPPES file of Aug 9, 2026

Jason Tai Sun, M.D.

Hematology & Oncology Physician · Redwood City, CA

Jason Tai Sun, M.D. is a hematology & oncology physician with a practice address in Redwood City, California, and NPI 1790906188, issued on May 1, 2007. Check the license (California A93301, 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
1790906188
Name
Jason Tai Sun
Credential
M.D.
Primary taxonomy
Hematology & Oncology Physician 207RH0003X
License number
A93301 CA
Self-reported in NPPES; status is on the state search
Practice location
1150 Veterans Blvd, Redwood City, CA 94063
Phone
(650) 299-4840
Enumerated
May 1, 2007
Record last updated
Dec 17, 2021 (not updated in 5 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20070927000917); accepts Medicare assignment
Medical or professional school
New York Medical College, 2004
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.
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8 nearest hematology & oncology physician records → All 1,583 in California → Look up another NPI →

Also registered at 1150 Veterans Blvd

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

  1. James Ahn, MDEmergency Medicine Physician1528146180
  2. Pavlina Apte, M.D.Internal Medicine Physician1386785806
  3. Wilma Arguelles-Gaviola, MDInternal Medicine Physician1740368398
  4. Anil Assudani, M.D,Psychiatry Physician1497753909
  5. Everett Austin, MDNeurology Physician1083792642
  6. Lauren Bacon, DPTPhysical Therapist1295167583

Verify Jason Tai 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 A93301    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

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7% fewer Medicare Part D claims than the average hematology & oncology physician in 2024

818 Medicare Part D claims for 146 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 47% of claims. 11 claims were for opioids.

  1. Jason Sun818
  2. Specialty average877

Most prescribed

  1. Tagrisso149 claims
  2. Prednisone62 claims
  3. Hydroxyurea61 claims
  4. Abiraterone Acetate48 claims
  5. Dexamethasone37 claims
  6. Ibrance37 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.

Bills Medicare through one group practice

  1. Permanente Medical Group IncRedwood City, CA

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

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

Jason Tai 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 2007, is newer than 46% of them.

  • NPI issued2007 · 46% of these records are older, 40% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated2004 · median 2003 among the 1,124 with a school on file
  • Record last updated2021 · 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 Redwood City → Hematology & Oncology Physician nationwide →

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

  1. Sandra Canales, MDRedwood City, CA 940631831277474
  2. Linda Hoang, M.D.Redwood City, CA 940631811253214
  3. Abraham Leung, MDRedwood City, CA 940631134208267
  4. Dorothy Nguyen, MDRedwood City, CA 940631013043280
  5. Gail Brown, M.D.Woodside, CA 940621750402996
  6. Rafael Gonzalez-Amado, MDSouth San Francisco, CA 940801639194848
  7. Jesse McGreivy, M.D.South San Francisco, CA 940801659657500
  8. Arturo Molina, M.D.South San Francisco, CA 940801225498835

Common questions

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

Jason Tai Sun, M.D.'s National Provider Identifier (NPI) is 1790906188, issued on May 1, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Jason Tai Sun, M.D. located?

The NPPES record lists a practice address at 1150 Veterans Blvd, Redwood City, CA, 94063. Phone: (650) 299-4840. Providers update this record themselves, so call before visiting.

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

NPPES lists California license number A93301, 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 Jason Tai Sun, M.D. prescribe under Medicare Part D?

In 2024, Jason Tai Sun, M.D. had 818 Medicare Part D claims for 146 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.