Chien-Shing Chen, M.D.
Medical Oncology Physician · Loma Linda, CA
Chien-Shing Chen, M.D. is a medical oncology physician with a practice address in Loma Linda, California, and NPI 1073542692, issued on Jul 3, 2006. Check the license (California A66192, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chien-Shing Chen
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- A66192 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11370 Anderson St, Loma Linda, CA 92354
- Phone
- (909) 558-2481
- Enumerated
- Jul 3, 2006
- Record last updated
- Jul 16, 2008 (not updated in 18 years: call before relying on the address or phone)
- Medicaid ID
- 00A661920 CA
- Medicare enrollment
- Enrolled (PECOS I20060314000166); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 447 in California → Look up another NPI →
Also registered at 11370 Anderson St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Ahmed Abou-Zamzam, M.D.Vascular Surgery Physician1558306795
- Borhaan Ahmad, M.D.Pediatrics Physician1740203595
Verify Chien-Shing Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A66192Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
13% fewer Medicare Part D claims than the average medical oncology physician in 2024
613 Medicare Part D claims for 76 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 38% of claims.
Most prescribed
- Xtandi82 claims
- Prednisone57 claims
- Abiraterone Acetate45 claims
- Erleada36 claims
- Acyclovir32 claims
- Ondansetron Hcl31 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $807.72
5 payments; by number, the most common kind was food and beverage; the largest payer was BeiGene USA, Inc. The 3,343 providers of this specialty with any payment received $11,773.47 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
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
- Faculty Physicians And Surgeons OF LlusmLoma Linda, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Chien-Shing Chen among 447 medical oncology physician records in California
Chien-Shing Chen, M.D. is one of 447 medical oncology physician records with a practice address in California. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated1985 · median 2004 among the 312 with a school on file
- Record last updated2008 · 41% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in California
There are 447 medical oncology physician records in California.
All 447 in California → Every provider in Loma Linda → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Hamid Mirshahidi, M.D.Loma Linda, CA 923541659307015
- Gayathri Nagaraj, MDLoma Linda, CA 923541346402286
- Zarah Dulce Lucas, MDLoma Linda, CA 923571235369703
- Christopher Di Simone, M.D.Rancho Mirage, CA 922701861461147
- Manasa Vulchi, M.D.Rancho Mirage, CA 922701760739296
- Scott Brook, M.D.Palm Springs, CA 922621245424365
- Lawrence Leichman, M.D.Palm Springs, CA 922621891792305
- Osagie Bello, M.DBrawley, CA 922271164726378
Common questions
What is Chien-Shing Chen, M.D.'s NPI number?
Chien-Shing Chen, M.D.'s National Provider Identifier (NPI) is 1073542692, issued on Jul 3, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chien-Shing Chen, M.D. located?
The NPPES record lists a practice address at 11370 Anderson St, Loma Linda, CA, 92354. Phone: (909) 558-2481. Providers update this record themselves, so call before visiting.
How can I verify Chien-Shing Chen, M.D.'s license?
NPPES lists California license number A66192, 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-Shing Chen, M.D. prescribe under Medicare Part D?
In 2024, Chien-Shing Chen, M.D. had 613 Medicare Part D claims for 76 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Chien-Shing Chen, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.