NPPES file of Aug 9, 2026

Alex Lim

Endodontics · Antioch, CA

Alex Lim is an endodontics with a practice address in Antioch, California, and NPI 1801919667, issued on Apr 9, 2007. Check the license (California 50306, 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
1801919667
Name
Alex Lim
Primary taxonomy
Endodontics 1223E0200X
License number
50306 CA
Self-reported in NPPES; status is on the state search
Practice location
5171 Lonetree Way, Antioch, CA 94531
Phone
(650) 400-3761
Enumerated
Apr 9, 2007
Record last updated
Jul 8, 2007 (not updated in 19 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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Verify Alex Lim 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 50306
    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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4.5 times the Medicare Part D claims of the average endodontics in 2024

540 Medicare Part D claims for 367 beneficiaries, against an average of 121 among the 4,119 providers of this specialty who prescribed in Part D. 19 claims were for opioids.

  1. Alex Lim540
  2. Specialty average121

Most prescribed

  1. Amoxicillin287 claims
  2. Ibuprofen116 claims
  3. Clindamycin Hcl95 claims
  4. Acetaminophen-Codeine14 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.

Industry payments in 2024: $45.19

1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 2,057 providers of this specialty with any payment received $49,739.86 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alex Lim$45
  2. Specialty average$49,740

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

Alex Lim among 1,018 endodontics records in California

Alex Lim is one of 1,018 endodontics records with a practice address in California. 68% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 27% of them.

  • NPI issued2007 · 27% of these records are older, 42% newer
  • In a Medicare fileYes · 68% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2007 · 78% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223E0200X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Endodontics providers in California

There are 1,018 endodontics records in California.

The 8 endodontics records with the nearest ZIP codes

  1. Weilin Shih Huang, DDSAntioch, CA 945311154504173
  2. Peter Chalmers, DDSEl Cerrito, CA 945301154540656
  3. Atsushi Fujimura, DDSEl Cerrito, CA 945301912320482
  4. George Hwang, DDSTravis Afb, CA 945331760779326
  5. Frank Casanova, D.D.S., M.SC.D.Fairfield, CA 945341487657391
  6. Andrew Lee, DDSFairfield, CA 945341700297819
  7. Michael Pham, DDSFairfield, CA 945341245607837
  8. James Stich, D.D.S.Fairfield, CA 945341407881873

Common questions

What is Alex Lim's NPI number?

Alex Lim's National Provider Identifier (NPI) is 1801919667, issued on Apr 9, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Alex Lim located?

The NPPES record lists a practice address at 5171 Lonetree Way, Antioch, CA, 94531. Phone: (650) 400-3761. Providers update this record themselves, so call before visiting.

How can I verify Alex Lim's license?

NPPES lists California license number 50306, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Alex Lim prescribe under Medicare Part D?

In 2024, Alex Lim had 540 Medicare Part D claims for 367 beneficiaries; the average among endodontics prescribers was 121. 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.