NPPES file of Aug 9, 2026

Yan Xing, MD

Medical Oncology Physician · Duarte, CA

Yan Xing, MD is a medical oncology physician with a practice address in Duarte, California, and NPI 1184987166, issued on Jun 24, 2012. Check the license (California A158622, 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 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1184987166
Name
Yan Xing
Credential
MD
Primary taxonomy
Medical Oncology Physician 207RX0202X
License numbers
A158622 CA
251165 MA
Self-reported in NPPES; status is on the state search
Practice location
1500 E. Duarte Road, Duarte, CA 91010
Phone
(626) 256-4673
Enumerated
Jun 24, 2012
Record last updated
Nov 24, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20181113001602); accepts Medicare assignment
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 1500 E. Duarte Road

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

  1. Alice Ahn, NPGerontology Nurse Practitioner1790151405
  2. Arya Amini, M.D.Radiation Oncology Physician1487910774
  3. Javier Arias-Stella, M.D.Anatomic Pathology & Clinical Pathology Physician1427469758
  4. Cornelia Banciu-Odell, MDHospitalist Physician1487620829
  5. Elizabeth Bautista, NURSE PRACTITIONERFamily Nurse Practitioner1609172303
  6. Heather Bitar, D.O.Hospice and Palliative Medicine (Internal Medicine) Physician1326453663

Verify Yan Xing in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A158622
    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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74% fewer Medicare Part D claims than the average medical oncology physician in 2024

182 Medicare Part D claims for 43 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.

  1. Yan Xing182
  2. Specialty average703

Most prescribed

  1. Ondansetron Hcl27 claims
  2. Prochlorperazine Maleate17 claims
  3. Potassium Chloride15 claims
  4. Braftovi13 claims
  5. Mektovi13 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): 99.1 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.

  1. Qualityout of 100 · 30% of the final score85.2
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $2,883.41

11 payments; by number, the most common kind was food and beverage; the largest payer was E.R. Squibb & Sons, L.L.C. 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.

  1. Yan Xing$2,883
  2. Specialty average$11,773

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

  1. City OF Hope Medical FoundationDuarte, CA

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

Yan Xing among 447 medical oncology physician records in California

Yan Xing, MD 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 2012, is newer than 72% of them.

  • NPI issued2012 · 72% of these records are older, 23% newer
  • In a Medicare fileYes · 82% of these records are
  • In the CMS Doctors and Clinicians fileYes · 70% of these records are
  • Graduated1994 · median 2004 among the 312 with a school on file
  • Record last updated2020 · 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).

48 medical oncology physician records list a practice address in Duarte

They are 48 of the 1,287 NPPES records with a practice address in Duarte, and 447 medical oncology physician records in California.

The 8 medical oncology physician records with the nearest ZIP codes

  1. Linda Bosserman, M.D., F.A.C.PDuarte, CA 910101346289824
  2. Cathie Chung, M.D.Duarte, CA 910101679599914
  3. Lee Cranmer, MD, PHDDuarte, CA 910101861465759
  4. Tanya Dorff, M.D.Duarte, CA 910101508879115
  5. Manana Elia, M.D.Duarte, CA 910101609841816
  6. Marwan Fakih, MDDuarte, CA 910101861498271
  7. Marianna Koczywas, MDDuarte, CA 910101639286677
  8. Dean Lim, MDDuarte, CA 910101790892735

Common questions

What is Yan Xing, MD's NPI number?

Yan Xing, MD's National Provider Identifier (NPI) is 1184987166, issued on Jun 24, 2012. An NPI identifies a provider in billing; it is not a license.

Where is Yan Xing, MD located?

The NPPES record lists a practice address at 1500 E. Duarte Road, Duarte, CA, 91010. Phone: (626) 256-4673. Providers update this record themselves, so call before visiting.

How can I verify Yan Xing, MD's license?

NPPES lists California license number A158622, 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 Yan Xing, MD prescribe under Medicare Part D?

In 2024, Yan Xing, MD had 182 Medicare Part D claims for 43 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.

What is Yan Xing, MD's MIPS final score?

The 2023 MIPS final score is 99.1 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.