NPPES file of Aug 9, 2026

David Ken Wah Lieu, M.D.

Cytopathology Physician · Alhambra, CA

David Ken Wah Lieu, M.D. is a cytopathology physician with a practice address in Alhambra, California, and NPI 1912966680, issued on Mar 21, 2006. Check the license (California G42121, 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 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1912966680
Name
David Ken Wah Lieu
Credential
M.D.
Primary taxonomy
Cytopathology Physician 207ZC0500X
License number
G42121 CA
Self-reported in NPPES; status is on the state search
Practice location
320 S Garfield Ave, Alhambra, CA 91801
Phone
(626) 281-7800
Enumerated
Mar 21, 2006
Record last updated
Mar 3, 2008 (not updated in 18 years: call before relying on the address or phone)
Fax
(626) 281-7802
Medicaid ID
00G421211 CA
Medicare enrollment
Enrolled (PECOS I20050720001114); accepts Medicare assignment
Medical or professional school
University Of California, Irvine, California College Of Medicine, 1979
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 320 S Garfield Ave

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

  1. Max Chiou, MDInternal Medicine Physician1316963051
  2. Jessica Heung, ADMIN/OUTREACH CORD.Case Manager/Care Coordinator1861954745
  3. Hsu-Ling Hsieh, O.T.Occupational Therapist1295091478
  4. Tanya Nguyen, M.D.Pediatrics Physician1184729626
  5. Brian Su, M.D.Reproductive Endocrinology Physician1326100058
  6. Ya-Jie Sun, L.AC., OMD, PH.DAcupuncturist1659478311

Verify David Ken Wah Lieu in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMedical Board of California
    Search for license G42121
    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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The MIPS final score for 2023 (Medicare payment program): 0 of 100

The Merit-based Incentive Payment System score is reported for this clinician. 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 score0.0
  2. Costnot scored (reweighted)
  3. Promoting interoperabilitynot scored (reweighted)
  4. Improvement activities0 of 40 points · 15%0.0

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

David Ken Wah Lieu among 75 cytopathology physician records in California

David Ken Wah Lieu, M.D. is one of 75 cytopathology 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 2006, is newer than 16% of them.

  • NPI issued2006 · 16% of these records are older, 33% newer
  • In a Medicare fileYes · 52% of these records are
  • In the CMS Doctors and Clinicians fileYes · 37% of these records are
  • Graduated1979 · median 1996 among the 28 with a school on file
  • Record last updated2008 · 45% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207ZC0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Cytopathology Physician providers in California

There are 75 cytopathology physician records in California.

The 8 cytopathology physician records with the nearest ZIP codes

  1. Mary Hanna, MDBaldwin Park, CA 917061730390725
  2. Hermineh AraminOceanside, CA 920561821451444
  3. Kimberly Schlack, MDSan Diego, CA 921231225090798
  4. Sepi Mahooti, M.D.San Diego, CA 921291245446228
  5. David Rogers, M.D.Van Nuys, CA 914051073560389
  6. Walid Salahi, MDVan Nuys, CA 914051265497689
  7. Suvarna Deshmukh-Rane, M.D.Sylmar, CA 913421720218993
  8. Carolyn Leach, M.D.Colton, CA 923241679650261

Common questions

What is David Ken Wah Lieu, M.D.'s NPI number?

David Ken Wah Lieu, M.D.'s National Provider Identifier (NPI) is 1912966680, issued on Mar 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is David Ken Wah Lieu, M.D. located?

The NPPES record lists a practice address at 320 S Garfield Ave, Alhambra, CA, 91801. Phone: (626) 281-7800. Providers update this record themselves, so call before visiting.

How can I verify David Ken Wah Lieu, M.D.'s license?

NPPES lists California license number G42121, 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.

What is David Ken Wah Lieu, M.D.'s MIPS final score?

The 2023 MIPS final score is 0 of 100. 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.