Theresa Hoang Nguyen, DMD
Dentist · Mission Viejo, CA
Theresa Hoang Nguyen, DMD is a dentist with a practice address in Mission Viejo, California, and NPI 1447869086, issued on Jul 29, 2020. Check the license (California 105028, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Theresa Hoang Nguyen
- Credential
- DMD
- Primary taxonomy
- Dentist 122300000X
- License number
- 105028 CA
Self-reported in NPPES; status is on the state search - Practice location
- 22951 Los Alisos Blvd, Mission Viejo, CA 92691
- Phone
- (949) 380-9506
- Enumerated
- Jul 29, 2020
- Record last updated
- Dec 16, 2022
- Entity
- Type 1 · individual
8 nearest dentist records → All 14,729 in California → Look up another NPI →
Verify Theresa Hoang Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 105028Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
74% fewer Medicare Part D claims than the average dentist in 2024
22 Medicare Part D claims for 16 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
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: $20.79
1 payment: food and beverage; the largest payer was Dentsply Sirona Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Theresa Hoang Nguyen among 14,729 dentist records in California
Theresa Hoang Nguyen, DMD 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 2020, is newer than 81% of them.
- NPI issued2020 · 81% of these records are older, 17% 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 updated2022 · 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).
48 dentist records list a practice address in Mission Viejo
They are 48 of the 2,156 NPPES records with a practice address in Mission Viejo, and 14,729 dentist records in California.
All 14,729 in California → Every provider in Mission Viejo → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Mary Addonizio, DDSMission Viejo, CA 926911699850636
- Shahram Ashtiani, D.D.S.Mission Viejo, CA 926911629128897
- Elham Khajavi, D.D.S.Mission Viejo, CA 926911619184967
- Hyun Yil Kim, DMDMission Viejo, CA 926911174690416
- Sedigheh Masoum, DDSMission Viejo, CA 926911679637821
- Robert Milner, D.D.S.Mission Viejo, CA 926911972698629
- Jeffrey Montgomery, D.D.S.Mission Viejo, CA 926911154538403
- Edward Moon, DDSMission Viejo, CA 926911316154990
Common questions
What is Theresa Hoang Nguyen, DMD's NPI number?
Theresa Hoang Nguyen, DMD's National Provider Identifier (NPI) is 1447869086, issued on Jul 29, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Hoang Nguyen, DMD located?
The NPPES record lists a practice address at 22951 Los Alisos Blvd, Mission Viejo, CA, 92691. Phone: (949) 380-9506. Providers update this record themselves, so call before visiting.
How can I verify Theresa Hoang Nguyen, DMD's license?
NPPES lists California license number 105028, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Theresa Hoang Nguyen, DMD prescribe under Medicare Part D?
In 2024, Theresa Hoang Nguyen, DMD had 22 Medicare Part D claims for 16 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.