NPPES file of Aug 9, 2026

Johnny S. Liu, DDS

Dentist · Alta Loma, CA

Johnny S. Liu, DDS is a dentist with a practice address in Alta Loma, California, and NPI 1124127956, issued on Sep 21, 2006. Check the license (California 51966, 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
1124127956
Name
Johnny S. Liu
Credential
DDS
Primary taxonomy
Dentist 122300000X
License number
51966 CA
Self-reported in NPPES; status is on the state search
Practice location
7168 Archibald Ave, Alta Loma, CA 91701
Phone
(909) 944-3120
Enumerated
Sep 21, 2006
Record last updated
Jul 8, 2007 (not updated in 19 years: call before relying on the address or phone)
Fax
(909) 483-3957
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.
Download card Updates feed

Verify Johnny S. Liu 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 51966
    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

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

Is this page about you? You can ask us to correct, restrict or remove it: how.

3.9 times the Medicare Part D claims of the average dentist in 2024

338 Medicare Part D claims for 149 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Johnny Liu338
  2. Specialty average86

Most prescribed

  1. Amoxicillin171 claims
  2. Ibuprofen122 claims
  3. Clindamycin Hcl22 claims
  4. Chlorhexidine Gluconate11 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.

Johnny S. Liu among 14,729 dentist records in California

Johnny S. Liu, DDS is one of 14,729 dentist records with a practice address in California. 56% 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 2% of them.

  • NPI issued2006 · 2% of these records are older, 82% newer
  • In a Medicare fileYes · 56% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 73% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

11 dentist records list a practice address in Alta Loma

They are 11 of the 128 NPPES records with a practice address in Alta Loma, and 14,729 dentist records in California.

The 8 dentist records with the nearest ZIP codes

  1. Terry Brock, DDSAlta Loma, CA 917011265590624
  2. Richard Buck, D.D.S.Alta Loma, CA 917011518167568
  3. Natalie Cochran, DDSAlta Loma, CA 917011336398197
  4. Steven Hernandez, D.D.S.Alta Loma, CA 917011588779953
  5. Milan Irvin, D.M.D.Alta Loma, CA 917011174871966
  6. Seong Lee, D.M.DRancho Cucamonga, CA 917011861582801
  7. Jia Lee, DDSAlta Loma, CA 917011992849939
  8. Albert Seguy, D.D.S.Alta Loma, CA 917011871608224

Common questions

What is Johnny S. Liu, DDS's NPI number?

Johnny S. Liu, DDS's National Provider Identifier (NPI) is 1124127956, issued on Sep 21, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Johnny S. Liu, DDS located?

The NPPES record lists a practice address at 7168 Archibald Ave, Alta Loma, CA, 91701. Phone: (909) 944-3120. Providers update this record themselves, so call before visiting.

How can I verify Johnny S. Liu, DDS's license?

NPPES lists California license number 51966, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Johnny S. Liu, DDS prescribe under Medicare Part D?

In 2024, Johnny S. Liu, DDS had 338 Medicare Part D claims for 149 beneficiaries; 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.