NPPES file of Aug 9, 2026

Lawrence W. Chan, M.D.

Specialist · Sunnyvale, CA

Lawrence W. Chan, M.D. is a specialist with a practice address in Sunnyvale, California, and NPI 1669437380, issued on Apr 18, 2006. Check the license (California A63513, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1669437380
Name
Lawrence W. Chan
Credential
M.D.
Primary taxonomy
Specialist 174400000X
License number
A63513 CA
Self-reported in NPPES; status is on the state search
Practice location
990 W Fremont Ave, Sunnyvale, CA 94087
Phone
(408) 738-0378
Enumerated
Apr 18, 2006
Record last updated
Jan 15, 2010 (not updated in 16 years: call before relying on the address or phone)
Fax
(408) 738-0318
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest specialist records → All 5,749 in California → Look up another NPI →

Also registered at 990 W Fremont Ave

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

  1. Preetha Arun, D.D.S.General Practice Dentistry1700912011
  2. Peter Bui, DDS, MDOral & Maxillofacial Surgery (D.M.D.)1063660538
  3. Neena ChandiokGeneral Practice Dentistry1225236664
  4. Steve Chang, DDSPeriodontics1700921632
  5. Roy Christian, D.D.SDentist1073810941
  6. Theresa Frank, D.D.S.General Practice Dentistry1578582151

Verify Lawrence W. Chan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this profession
    Search for license A63513    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
Find the California license search

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Industry payments in 2024: $141.96

5 payments; by number, the most common kind was food and beverage; the largest payer was Genentech USA, Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Lawrence Chan$141.96
  2. Specialty average$4,760.79

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Lawrence W. Chan among 5,749 specialist records in California

Lawrence W. Chan, M.D. is one of 5,749 specialist records with a practice address in California. 30% 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 7% of them.

  • NPI issued2006 · 7% of these records are older, 60% newer
  • In a Medicare fileYes · 30% of these records are
  • In the CMS Doctors and Clinicians fileNo · 19% of these records are
  • Record last updated2010 · 77% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Specialist providers in California

There are 5,749 specialist records in California.

All 5,749 in California → Every provider in Sunnyvale → Specialist nationwide →

The 8 specialist records with the nearest ZIP codes

  1. Galia Bitterman, M.S.Sunnyvale, CA 940871376896340
  2. Art Chakman, BS, CHTSunnyvale, CA 940871447507678
  3. Enkuan Hu, CERTIFIED THERAPISTSunnyvale, CA 940871447660477
  4. Seymour Rapaport, M.D.Sunnyvale, CA 940871043297930
  5. Anne Sinha, OTR/L, MOTSunnyvale, CA 940871235307059
  6. Joy Wang, M.D. D.M.D.Sunnyvale, CA 940871427110410
  7. Joselin Ayala PachecoSunnyvale, CA 940861912652702
  8. Noel Hernandez, R.P.T.Sunnyvale, CA 940861679899819

Common questions

What is Lawrence W. Chan, M.D.'s NPI number?

Lawrence W. Chan, M.D.'s National Provider Identifier (NPI) is 1669437380, issued on Apr 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Lawrence W. Chan, M.D. located?

The NPPES record lists a practice address at 990 W Fremont Ave, Sunnyvale, CA, 94087. Phone: (408) 738-0378. Providers update this record themselves, so call before visiting.

How can I verify Lawrence W. Chan, M.D.'s license?

NPPES lists California license number A63513, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.