NPPES file of Aug 9, 2026

Ngoc Mong Hoang Nguyen, O.D.

Optometrist · Escondido, CA

Ngoc Mong Hoang Nguyen, O.D. is an optometrist with a practice address in Escondido, California, and NPI 1891842530, issued on Jan 4, 2007. Check the license (California OPT10519, 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
1891842530
Name
Ngoc Mong Hoang Nguyen
Credential
O.D.
Primary taxonomy
Optometrist 152W00000X
License number
OPT10519 CA
Self-reported in NPPES; status is on the state search
Practice location
1264 Auto Pkwy, Escondido, CA 92029
Phone
(760) 743-5209
Enumerated
Jan 4, 2007
Record last updated
Dec 3, 2021 (not updated in 5 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 Ngoc Mong Hoang 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 OPT10519
    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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60% fewer Medicare Part D claims than the average optometrist in 2024

112 Medicare Part D claims for 35 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 88% of claims.

  1. Ngoc Nguyen112
  2. Specialty average277

Most prescribed

  1. Cyclosporine96 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.

Ngoc Mong Hoang Nguyen among 8,308 optometrist records in California

Ngoc Mong Hoang Nguyen, O.D. is one of 8,308 optometrist records with a practice address in California. 67% 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 34% of them.

  • NPI issued2007 · 34% of these records are older, 46% newer
  • In a Medicare fileYes · 67% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2021 · 67% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 152W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Optometrist providers in California

There are 8,308 optometrist records in California.

The 8 optometrist records with the nearest ZIP codes

  1. David Ardakani, O.D.Escondido, CA 920291841641222
  2. Puneh Baha, O.D.Escondido, CA 920291134212160
  3. Gina Grasso, ODEscondido, CA 920291700899952
  4. Amanjot Mashiana, ODEscondido, CA 920291013497239
  5. Ashlee Rich, O.D.Escondido, CA 920291588942411
  6. Dena Shahani, O.D.Escondido, CA 920291134533953
  7. Erica TsungEscondido, CA 920291598653057
  8. Alan Will, O.D.Escondido, CA 920291679620231

Common questions

What is Ngoc Mong Hoang Nguyen, O.D.'s NPI number?

Ngoc Mong Hoang Nguyen, O.D.'s National Provider Identifier (NPI) is 1891842530, issued on Jan 4, 2007. An NPI identifies a provider in billing; it is not a license.

Where is Ngoc Mong Hoang Nguyen, O.D. located?

The NPPES record lists a practice address at 1264 Auto Pkwy, Escondido, CA, 92029. Phone: (760) 743-5209. Providers update this record themselves, so call before visiting.

How can I verify Ngoc Mong Hoang Nguyen, O.D.'s license?

NPPES lists California license number OPT10519, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.

How much does Ngoc Mong Hoang Nguyen, O.D. prescribe under Medicare Part D?

In 2024, Ngoc Mong Hoang Nguyen, O.D. had 112 Medicare Part D claims for 35 beneficiaries; the average among optometrist prescribers was 277. 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.