NPPES file of Aug 9, 2026

Olivia Mai-Lan Nguyen, DDS

Dentist · San Ramon, CA

Olivia Mai-Lan Nguyen, DDS is a dentist with a practice address in San Ramon, California, and NPI 1821659046, issued on Jun 27, 2019. Check the license (California CA107482, 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
1821659046
Name
Olivia Mai-Lan Nguyen
Credential
DDS
Primary taxonomy
Dentist 122300000X
License numbers
CA107482 CA
DN185842 MA
Self-reported in NPPES; status is on the state search
Practice location
2600 Old Crow Canyon RD Ste 100, San Ramon, CA 94583
Phone
(925) 425-7545
Enumerated
Jun 27, 2019
Record last updated
Feb 10, 2025
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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8 nearest dentist records → All 14,729 in California → Look up another NPI →

Verify Olivia Mai-Lan Nguyen 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 CA107482    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
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69% fewer Medicare Part D claims than the average dentist in 2024

27 Medicare Part D claims for 14 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.

  1. Olivia Nguyen27
  2. Specialty average86

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: $29.36

2 payments; by number, the most common kind was food and beverage; the largest payer was Straumann USA LLC. 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.

  1. Olivia Nguyen$29.36
  2. Specialty average$540.36

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

Olivia Mai-Lan Nguyen among 14,729 dentist records in California

Olivia Mai-Lan Nguyen, 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 2019, is newer than 78% of them.

  • NPI issued2019 · 78% of these records are older, 19% 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 updated2025 · 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).

49 dentist records list a practice address in San Ramon

They are 49 of the 2,281 NPPES records with a practice address in San Ramon, and 14,729 dentist records in California.

All 14,729 in California → Every provider in San Ramon → Dentist nationwide →

The 8 dentist records with the nearest ZIP codes

  1. Sean Anderson, DDSSan Ramon, CA 945831316954241
  2. Cliff Broschinsky, D.D.S.San Ramon, CA 945831316014640
  3. Annabelle Carnice, DDSSan Ramon, CA 945831679662977
  4. Isaac Chin, DDSSan Ramon, CA 945831821116070
  5. Alfred Dela Cruz, D.D.S.San Ramon, CA 945831851446447
  6. Foroud Hakim, DDSSan Ramon, CA 945831932111036
  7. Chia-Fen Jin, D.D.S.San Ramon, CA 945831457373722
  8. Rupam Khanna, D.D.S.San Ramon, CA 945831770632937

Common questions

What is Olivia Mai-Lan Nguyen, DDS's NPI number?

Olivia Mai-Lan Nguyen, DDS's National Provider Identifier (NPI) is 1821659046, issued on Jun 27, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Olivia Mai-Lan Nguyen, DDS located?

The NPPES record lists a practice address at 2600 Old Crow Canyon RD Ste 100, San Ramon, CA, 94583. Phone: (925) 425-7545. Providers update this record themselves, so call before visiting.

How can I verify Olivia Mai-Lan Nguyen, DDS's license?

NPPES lists California license number CA107482, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Olivia Mai-Lan Nguyen, DDS prescribe under Medicare Part D?

In 2024, Olivia Mai-Lan Nguyen, DDS had 27 Medicare Part D claims for 14 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.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.