NPPES file of Aug 9, 2026

David Chang Yau, MD

Hematology (Pathology) Physician · Los Angeles, CA

David Chang Yau, MD is a hematology (pathology) physician with a practice address in Los Angeles, California, and NPI 1528295946, issued on Jun 11, 2009. Check the license (California A125107, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1528295946
Name
David Chang Yau
Credential
MD
Primary taxonomy
Hematology (Pathology) Physician 207ZH0000X
License number
A125107 CA
Self-reported in NPPES; status is on the state search
Practice location
1450 San Pablo St FL 2, Los Angeles, CA 90033
Phone
(323) 442-2582
Enumerated
Jun 11, 2009
Record last updated
Nov 5, 2020 (not updated in 6 years: call before relying on the address or phone)
Medicare enrollment
Enrolled (PECOS I20190624002431); accepts Medicare assignment
Medical or professional school
University Of Southern California Keck School Of Medicine, 2009
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 1450 San Pablo St FL 2

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

  1. Philip Carpenter, MDAnatomic Pathology Physician1801976998
  2. Adrian Correa, M.D.Anatomic Pathology & Clinical Pathology Physician1245245950
  3. Michael Koss, MDAnatomic Pathology & Clinical Pathology Physician1508966201
  4. Evan Yung, MDAnatomic Pathology & Clinical Pathology Physician1003107756

Verify David Chang Yau in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license A125107
    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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Bills Medicare through one group practice

  1. Usc Care Medical Group IncLos Angeles, CA

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

David Chang Yau among 65 hematology (pathology) physician records in California

David Chang Yau, MD is one of 65 hematology (pathology) physician records with a practice address in California. 52% 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 60% of them.

  • NPI issued2009 · 60% of these records are older, 32% newer
  • In a Medicare fileYes · 52% of these records are
  • In the CMS Doctors and Clinicians fileYes · 45% of these records are
  • Graduated2009 · median 1998 among the 29 with a school on file
  • Record last updated2020 · 63% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZH0000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Hematology (Pathology) Physician providers in California

There are 65 hematology (pathology) physician records in California.

The 8 hematology (pathology) physician records with the nearest ZIP codes

  1. Tse-Chang Cheng, MDLos Angeles, CA 900271851462733
  2. Charles Koo, MDLos Angeles, CA 900271609947597
  3. Aihong Liu, M.D., PH.D.Los Angeles, CA 900271568611549
  4. Hongbin Zha, MDLos Angeles, CA 900271841361821
  5. Adam Cloe, M.D.Los Angeles, CA 900421639519770
  6. Patrick Browne, M.D., PH.D.Los Angeles, CA 900661972798726
  7. Joon Lee, M.D.Los Angeles, CA 900661528255957
  8. Sassan Rostamipour Shiroyeh, M.D.Los Angeles, CA 900661336391473

Common questions

What is David Chang Yau, MD's NPI number?

David Chang Yau, MD's National Provider Identifier (NPI) is 1528295946, issued on Jun 11, 2009. An NPI identifies a provider in billing; it is not a license.

Where is David Chang Yau, MD located?

The NPPES record lists a practice address at 1450 San Pablo St FL 2, Los Angeles, CA, 90033. Phone: (323) 442-2582. Providers update this record themselves, so call before visiting.

How can I verify David Chang Yau, MD's license?

NPPES lists California license number A125107, 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.

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.