NPPES file of Aug 9, 2026

Letty W. Kwok

Dentist · Malden, MA

Letty W. Kwok is a dentist with a practice address in Malden, Massachusetts, and NPI 1619464757, issued on Apr 14, 2018. Check the license (Massachusetts DN1858354, as entered in NPPES) with the Massachusetts 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
1619464757
Name
Letty W. Kwok
Primary taxonomy
Dentist 122300000X
License number
DN1858354 MA
Self-reported in NPPES; status is on the state search
Practice location
572 Pleasant St, Malden, MA 02148
Phone
(781) 397-8876
Enumerated
Apr 14, 2018
Record last updated
Dec 22, 2020 (not updated in 6 years: call before relying on the address or phone)
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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Also registered at 572 Pleasant St

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

  1. Mei Der Chou, DMDDentist1982789285
  2. Jimmy Lai, D.M.D.Dentist1174724850
  3. James Lee, DMDDentist1619384393
  4. Dennis Su, DMDGeneral Practice Dentistry1184709487

Verify Letty W. Kwok in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
    Search for license DN1858354
    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 Massachusetts 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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78% fewer Medicare Part D claims than the average dentist in 2024

19 Medicare Part D claims, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.

  1. Letty Kwok19
  2. Specialty average86

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.

Letty W. Kwok among 2,934 dentist records in Massachusetts

Letty W. Kwok is one of 2,934 dentist records with a practice address in Massachusetts. 58% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 59% of them.

  • NPI issued2018 · 59% of these records are older, 36% newer
  • In a Medicare fileYes · 58% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • 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 122300000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

35 dentist records list a practice address in Malden

They are 35 of the 1,065 NPPES records with a practice address in Malden, and 2,934 dentist records in Massachusetts.

The 8 dentist records with the nearest ZIP codes

  1. Mona Alenezi, DMDMalden, MA 021481194028324
  2. Mei Der Chou, DMDMalden, MA 021481982789285
  3. John Dang, D.M.D.Malden, MA 021481770805145
  4. David Hornung, DMDMalden, MA 021481457616799
  5. Daria Hornung, D.M.D.Malden, MA 021481376982322
  6. Ahmed Kaddi, BDSMalden, MA 021481073815577
  7. Jimmy Lai, D.M.D.Malden, MA 021481174724850
  8. Ted Lee, DMDMalden, MA 021481295810521

Common questions

What is Letty W. Kwok's NPI number?

Letty W. Kwok's National Provider Identifier (NPI) is 1619464757, issued on Apr 14, 2018. An NPI identifies a provider in billing; it is not a license.

Where is Letty W. Kwok located?

The NPPES record lists a practice address at 572 Pleasant St, Malden, MA, 02148. Phone: (781) 397-8876. Providers update this record themselves, so call before visiting.

How can I verify Letty W. Kwok's license?

NPPES lists Massachusetts license number DN1858354, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.

How much does Letty W. Kwok prescribe under Medicare Part D?

In 2024, Letty W. Kwok had 19 Medicare Part D claims; the average among dentist prescribers was 86. Part D covers Medicare prescriptions 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.

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.