Registry data as of Aug 27, 2026

Joon-Ku Lee, D.M.D

General Practice Dentistry · Sunnyvale, CA

Joon-Ku Lee, D.M.D is a general practice dentistry with a practice address in Sunnyvale, California, and NPI 1720006406, issued on Jul 18, 2006. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, loaded Aug 27, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordas of Aug 27, 2026
1720006406
Name
Joon-Ku Lee
Credential
D.M.D
Primary taxonomy
General Practice Dentistry 1223G0001X
Practice location
990 W Fremont Ave, Sunnyvale, CA 94087
Phone
(408) 774-2828
Enumerated
Jul 18, 2006
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 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 and Maxillofacial Surgery (Dentist)1063660538
  3. Lawrence Chan, M.D.Specialist1669437380
  4. Neena ChandiokGeneral Practice Dentistry1225236664
  5. Steve Chang, DDSPeriodontics1700921632
  6. Roy Christian, D.D.SDentist1073810941

Verify Joon-Ku Lee in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich California board licenses this professionCheck 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

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Statewide context: the Medical Board of California reported 374 disciplinary actions in FY 2022-23. California discipline data →

35% fewer Medicare Part D claims than the average general practice dentistry in 2024

55 Medicare Part D claims for 33 beneficiaries, against an average of 84 among the 68,591 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Joon-Ku Lee55
  2. Specialty average84

Most prescribed

  1. Amoxicillin35 claims

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.

133 general practice dentistry records list a Sunnyvale practice address

They are 133 of the 1,690 NPPES records with a Sunnyvale practice address, and 17,740 general practice dentistry records in California.

Other general practice dentistry records in California

  1. Ronald Aanerud, DDSSan Diego, CA1871752931
  2. Steven Aaronson, D.D.S.Santa Monica, CA1265455851
  3. Shahrzad Aarup, DDSPomona, CA1265784367
  4. Al Abad, DDSSan Jose, CA1104992148
  5. Erwin Abad, D.D.S.Canoga Park, CA1861590093
  6. Francine Abad, DDSSan Francisco, CA1942700810
  7. Maria Abad, D.D.S.Norwalk, CA1215006754
  8. Mark Ryan Abad, DDSDaly City, CA1770357394
  9. Sanaz Abadi, D.D.S.Los Angeles, CA1699934026
  10. Ernesto Abadilla, DDSPalm Desert, CA1508063801

Common questions

What is Joon-Ku Lee, D.M.D's NPI number?

Joon-Ku Lee, D.M.D's National Provider Identifier (NPI) is 1720006406, issued on Jul 18, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Joon-Ku Lee, D.M.D located?

The NPPES record lists a practice address at 990 W Fremont Ave, Sunnyvale, CA, 94087. Phone: (408) 774-2828. Providers update this record themselves, so call before visiting.

How can I verify Joon-Ku Lee, D.M.D's license?

Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Joon-Ku Lee, D.M.D prescribe under Medicare Part D?

In 2024, Joon-Ku Lee, D.M.D had 55 Medicare Part D claims for 33 beneficiaries; the average among general practice dentistry prescribers was 84. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.