Quoc-Tuan Ngo, MD
Ophthalmology Physician · Downey, CA
Quoc-Tuan Ngo, MD is an ophthalmology physician with a practice address in Downey, California, and NPI 1437787645, issued on Apr 1, 2020. Check the license (California 195734, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Quoc-Tuan Ngo
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- 195734 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9449 Imperial Hwy, Downey, CA 90242
- Phone
- (562) 657-9000
- Enumerated
- Apr 1, 2020
- Record last updated
- Aug 27, 2025
- Medicare enrollment
- Enrolled (PECOS I20240722002558); accepts Medicare assignment
- Medical or professional school
- Oakland Univ, William Beaumont School Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 9449 Imperial Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Quoc-Tuan Ngo in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 195734Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average ophthalmology physician in 2024
530 Medicare Part D claims for 228 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 76% of claims.
Most prescribed
- Cequa94 claims
- Restasis74 claims
- Latanoprost38 claims
- Xiidra38 claims
- Rocklatan37 claims
- Vyzulta32 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: $709.63
18 payments; by number, the most common kind was food and beverage; the largest payer was Alcon Vision LLC. The 13,221 providers of this specialty with any payment received $4,535.02 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.
Bills Medicare through one group practice
- Southern California Permanente Medical GroupSanta Ana, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Quoc-Tuan Ngo among 2,899 ophthalmology physician records in California
Quoc-Tuan Ngo, MD is one of 2,899 ophthalmology physician records with a practice address in California. 79% 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 94% of them.
- NPI issued2020 · 94% of these records are older, 4% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2020 · median 2001 among the 1,907 with a school on file
- Record last updated2025 · 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 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Downey → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Annie Lim, MDDowney, CA 902421639377310
- Amy McCluskey, MDDowney, CA 902421598813305
- Brian Brown, M.D.Downey, CA 902411992748479
- Thomas Choi, M.D.Downey, CA 902411477555985
- Joseph Hsu, MDDowney, CA 902411760584270
- Marc Segall, M.D.Downey, CA 902411326151531
- Mehrdad Aghai, M.D.Gardena, CA 902471841302577
- Amarpreet BrarGardena, CA 902471356361109
Common questions
What is Quoc-Tuan Ngo, MD's NPI number?
Quoc-Tuan Ngo, MD's National Provider Identifier (NPI) is 1437787645, issued on Apr 1, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Quoc-Tuan Ngo, MD located?
The NPPES record lists a practice address at 9449 Imperial Hwy, Downey, CA, 90242. Phone: (562) 657-9000. Providers update this record themselves, so call before visiting.
How can I verify Quoc-Tuan Ngo, MD's license?
NPPES lists California license number 195734, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Quoc-Tuan Ngo, MD prescribe under Medicare Part D?
In 2024, Quoc-Tuan Ngo, MD had 530 Medicare Part D claims for 228 beneficiaries; the average among ophthalmology physician prescribers was 1,518. 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.