NPPES file of Aug 9, 2026

Dortha Tao-Yi Chu, MD., PHD,

Surgical Oncology Physician · Valencia, CA

Dortha Tao-Yi Chu, MD., PHD, is a surgical oncology physician with a practice address in Valencia, California, and NPI 1629227251, issued on Sep 18, 2008. Check the license (California A86342, 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
1629227251
Name
Dortha Tao-Yi Chu
Credential
MD., PHD,
Primary taxonomy
Surgical Oncology Physician 2086X0206X
License number
A86342 CA
Self-reported in NPPES; status is on the state search
Practice location
25425 Orchard Village RD Ste 150, Valencia, CA 91355
Phone
(661) 467-2371
Enumerated
Sep 18, 2008
Record last updated
Mar 28, 2023
Fax
(661) 753-8647
Medicaid ID
0765638 CA
Medicare enrollment
Enrolled (PECOS I20090304000279); accepts Medicare assignment
Medical or professional school
Washington University School Of Medicine, 2002
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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Verify Dortha Tao-Yi Chu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A86342
    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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75% fewer Medicare Part D claims than the average surgical oncology physician in 2024

22 Medicare Part D claims for 11 beneficiaries, against an average of 87 among the 1,237 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Dortha Chu22
  2. Specialty average87

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: $380.82

11 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 1,132 providers of this specialty with any payment received $4,224.74 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Dortha Chu$380.82
  2. Specialty average$4,224.74

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. Cancer Therapy Medical Group IncFresno, CA

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

Surgical Oncology Physician providers in California

There are 250 surgical oncology physician records in California.

Other surgical oncology physician records in California

  1. Ahmad Abou Abbass, M.DMission Viejo, CA1790946895
  2. Aziz Ahmad, M.D.Duarte, CA1487866216
  3. Rahim Aimaq, MDDuarte, CA1710133889
  4. Yasir AkmalLos Angeles, CA1689832966
  5. Mohammed Al-Temimi, MDSan Jose, CA1144562836
  6. Glenn Allison, M.D.Orange, CA1245386051
  7. Farin Amersi, M.D.West Hollywood, CA1679587604
  8. Stephanie Angarita, M.D.Downey, CA1003259219
  9. Elizabeth Arena, M.D.Los Angeles, CA1245460237
  10. Ava Armani, M.D.San Diego, CA1861759383

Common questions

What is Dortha Tao-Yi Chu, MD., PHD,'s NPI number?

Dortha Tao-Yi Chu, MD., PHD,'s National Provider Identifier (NPI) is 1629227251, issued on Sep 18, 2008. An NPI identifies a provider in billing; it is not a license.

Where is Dortha Tao-Yi Chu, MD., PHD, located?

The NPPES record lists a practice address at 25425 Orchard Village RD Ste 150, Valencia, CA, 91355. Phone: (661) 467-2371. Providers update this record themselves, so call before visiting.

How can I verify Dortha Tao-Yi Chu, MD., PHD,'s license?

NPPES lists California license number A86342, 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 Dortha Tao-Yi Chu, MD., PHD, prescribe under Medicare Part D?

In 2024, Dortha Tao-Yi Chu, MD., PHD, had 22 Medicare Part D claims for 11 beneficiaries; the average among surgical oncology physician prescribers was 87. Part D covers Medicare prescriptions only.

What is Dortha Tao-Yi Chu, MD., PHD,'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.