NPPES file of Aug 9, 2026

Don T.c. Niu, D.D.S.

General Practice Dentistry · Irvine, CA

Don T.c. Niu, D.D.S. is a general practice dentistry with a practice address in Irvine, California, and NPI 1033221320, issued on Aug 31, 2006. Check the license (California 28775, 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
1033221320
Name
Don T.c. Niu
Credential
D.D.S.
Primary taxonomy
General Practice Dentistry 1223G0001X
License number
28775 CA
Self-reported in NPPES; status is on the state search
Practice location
18 Endeavor, Irvine, CA 92618
Phone
(949) 551-8877
Enumerated
Aug 31, 2006
Record last updated
Jun 17, 2016 (not updated in 10 years: call before relying on the address or phone)
Fax
(949) 551-9633
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 18 Endeavor

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

  1. Edmund Guo, DDSPediatric Dentistry1407096407
  2. Elham Jafarimojarrad, M.D.Neurology Physician1356501084
  3. David Kaufman, D.O.Gastroenterology Physician1508893363
  4. Alan Nili, D.O.Family Medicine Physician1356366835
  5. Sonny Wang, M.D.Colon & Rectal Surgery Physician1811187560
  6. David Yang, D.P.M.Foot & Ankle Surgery Podiatrist1013961788

Verify Don T.c. Niu 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 28775
    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.

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2% fewer Medicare Part D claims than the average general practice dentistry in 2024

81 Medicare Part D claims for 33 beneficiaries, against an average of 83 among the 70,290 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.

  1. Don Niu81
  2. Specialty average83

Most prescribed

  1. Amoxicillin29 claims
  2. Ibuprofen26 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.

Don T.c. Niu among 17,852 general practice dentistry records in California

Don T.c. Niu, D.D.S. is one of 17,852 general practice dentistry records with a practice address in California. 57% 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 3% of them.

  • NPI issued2006 · 3% of these records are older, 71% newer
  • In a Medicare fileYes · 57% of these records are
  • In the CMS Doctors and Clinicians fileNo · under 1% of these records are
  • Record last updated2016 · 79% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223G0001X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

178 general practice dentistry records list a practice address in Irvine

They are 178 of the 7,778 NPPES records with a practice address in Irvine, and 17,852 general practice dentistry records in California.

The 8 general practice dentistry records with the nearest ZIP codes

  1. Ashraf Abdelmalek, DDSIrvine, CA 926181437250214
  2. Melinda Beck, DDSIrvine, CA 926181447278684
  3. Sepideh Caviar, DMDIrvine, CA 926181790858488
  4. Stanley Chien, DDSIrvine, CA 926181023109584
  5. Alvin Chow, D.D.SIrvine, CA 926181164564944
  6. Grace Han, D.M.D.Irvine, CA 926181275693228
  7. Mingway Lee, D.D.S.Irvine, CA 926181548259856
  8. Beatrice Lu, DDSIrvine, CA 926181497865943

Common questions

What is Don T.c. Niu, D.D.S.'s NPI number?

Don T.c. Niu, D.D.S.'s National Provider Identifier (NPI) is 1033221320, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Don T.c. Niu, D.D.S. located?

The NPPES record lists a practice address at 18 Endeavor, Irvine, CA, 92618. Phone: (949) 551-8877. Providers update this record themselves, so call before visiting.

How can I verify Don T.c. Niu, D.D.S.'s license?

NPPES lists California license number 28775, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Don T.c. Niu, D.D.S. prescribe under Medicare Part D?

In 2024, Don T.c. Niu, D.D.S. had 81 Medicare Part D claims for 33 beneficiaries; the average among general practice dentistry prescribers was 83. 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.