NPPES file of Aug 9, 2026

Chien Pong Chen, M.D., PH.D.

Radiation Oncology Physician · La Jolla, CA

Chien Pong Chen, M.D., PH.D. is a radiation oncology physician with a practice address in La Jolla, California, and NPI 1083947717, issued on Sep 14, 2009. Check the license (California A107522, 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
1083947717
Name
Chien Pong Chen
Credential
M.D., PH.D.
Primary taxonomy
Radiation Oncology Physician 2085R0001X
License number
A107522 CA
Self-reported in NPPES; status is on the state search
Practice location
10666 N Torrey Pines RD, La Jolla, CA 92037
Phone
(415) 971-9313
Enumerated
Sep 14, 2009
Record last updated
Aug 6, 2012 (not updated in 14 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20120904000444); accepts Medicare assignment
Medical or professional school
Columbia University College Of Physicians And Surgeons, 2007
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.
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Also registered at 10666 N Torrey Pines RD

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

  1. Terri Abbott, P.A.Physician Assistant1811165566
  2. Richard Abello, M.D.Diagnostic Radiology Physician1245205996
  3. Amanda Abrisch, AUDAudiologist1780966903
  4. Edsel Abud, MD, PHDAllergy & Immunology Physician1891257192
  5. Christina Adams, MDCardiovascular Disease Physician1023164605
  6. Dylan Adamson, M.D.Transplant Surgery Physician1598030702

Verify Chien Pong 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 A107522
    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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47% more Medicare Part D claims than the average radiation oncology physician in 2024

197 Medicare Part D claims for 92 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 18 claims were for opioids.

  1. Chien Chen197
  2. Specialty average134

Most prescribed

  1. Methylprednisolone73 claims
  2. Tamsulosin Hcl17 claims
  3. Dexamethasone13 claims
  4. Gabapentin13 claims
  5. Omeprazole11 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. Scripps HealthLa Jolla, CA

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

Chien Pong Chen among 735 radiation oncology physician records in California

Chien Pong Chen, M.D., PH.D. is one of 735 radiation 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 2009, is newer than 62% of them.

  • NPI issued2009 · 62% of these records are older, 34% newer
  • In a Medicare fileYes · 83% of these records are
  • In the CMS Doctors and Clinicians fileYes · 74% of these records are
  • Graduated2007 · median 2005 among the 545 with a school on file
  • Record last updated2012 · 55% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Radiation Oncology Physician providers in California

There are 735 radiation oncology physician records in California.

The 8 radiation oncology physician records with the nearest ZIP codes

  1. Cynthia Chasan, MDLa Jolla, CA 920371922450840
  2. David Hodgens, M.D.La Jolla, CA 920371063406080
  3. Ray Lin, M.D.La Jolla, CA 920371437110996
  4. Jean Mefferd, M.D.La Jolla, CA 920371629062625
  5. Jonathan Bear, M.D.Escondido, CA 920291770849523
  6. Paul Volpp, MDEscondido, CA 920291225186232
  7. Dominique Rash, M.D.Encinitas, CA 920241699908640
  8. James Urbanic, M.D.Encinitas, CA 920241164607875

Common questions

What is Chien Pong Chen, M.D., PH.D.'s NPI number?

Chien Pong Chen, M.D., PH.D.'s National Provider Identifier (NPI) is 1083947717, issued on Sep 14, 2009. An NPI identifies a provider in billing; it is not a license.

Where is Chien Pong Chen, M.D., PH.D. located?

The NPPES record lists a practice address at 10666 N Torrey Pines RD, La Jolla, CA, 92037. Phone: (415) 971-9313. Providers update this record themselves, so call before visiting.

How can I verify Chien Pong Chen, M.D., PH.D.'s license?

NPPES lists California license number A107522, 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 Chien Pong Chen, M.D., PH.D. prescribe under Medicare Part D?

In 2024, Chien Pong Chen, M.D., PH.D. had 197 Medicare Part D claims for 92 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.

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.