Brian Jonathan Nguyen, MD
Ophthalmology Physician · Valencia, CA
Brian Jonathan Nguyen, MD is an ophthalmology physician with a practice address in Valencia, California, and NPI 1912469792, issued on Apr 2, 2019. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Brian Jonathan Nguyen
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- MT221626 PA
Self-reported in NPPES; status is on the state search - Practice location
- 27420 Tourney RD Ste 100, Valencia, CA 91355
- Phone
- (661) 259-3937
- Enumerated
- Apr 2, 2019
- Record last updated
- Jan 30, 2024
- Fax
- (661) 259-3904
- Medicaid ID
- MT221626 PA
- Medicare enrollment
- Enrolled (PECOS I20230705001143); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Also registered at 27420 Tourney RD Ste 100
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Danielle Benosa, O.D.Optometrist1265868723
- Pelin Celiker, M.D.Ophthalmology Physician1598405847
- Talisa Chhabra, ODOptometrist1841019734
- Sara Janami, ODOptometrist1427820828
- Jing Jia, MDOphthalmology Physician1093384034
- Rosanna Nguyen, O.D.Optometrist1043574742
Verify Brian Jonathan Nguyen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average ophthalmology physician in 2024
1,653 Medicare Part D claims for 517 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 45% of claims.
Most prescribed
- Latanoprost353 claims
- Prednisolone Acetate224 claims
- Moxifloxacin147 claims
- Difluprednate98 claims
- Dorzolamide-Timolol97 claims
- Timolol Maleate86 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 74.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $506.47
18 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. 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
- Mid Peninsula Eye Physicians And Surgeons Medical GroupSan Mateo, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Brian Jonathan Nguyen among 2,899 ophthalmology physician records in California
Brian Jonathan Nguyen, 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 2019, is newer than 92% of them.
- NPI issued2019 · 92% of these records are older, 6% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Record last updated2024 · 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 Valencia → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Nathan Abraham, M.D.Valencia, CA 913551306224456
- Pelin Celiker, M.D.Valencia, CA 913551598405847
- Douglas Engh, M.D. ,F.A.C.S., INC.Valencia, CA 913551538249099
- Herbert Goldman, MDValencia, CA 913551699707224
- Brian Gross, M.D.Valencia, CA 913551083620066
- Craig Helm, M.D.Valencia, CA 913551588678791
- Jing Jia, MDValencia, CA 913551093384034
- Sara Jones-Gomberg, MDValencia, CA 913551588723159
Common questions
What is Brian Jonathan Nguyen, MD's NPI number?
Brian Jonathan Nguyen, MD's National Provider Identifier (NPI) is 1912469792, issued on Apr 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Brian Jonathan Nguyen, MD located?
The NPPES record lists a practice address at 27420 Tourney RD Ste 100, Valencia, CA, 91355. Phone: (661) 259-3937. Providers update this record themselves, so call before visiting.
How can I verify Brian Jonathan Nguyen, MD's license?
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 Brian Jonathan Nguyen, MD prescribe under Medicare Part D?
In 2024, Brian Jonathan Nguyen, MD had 1,653 Medicare Part D claims for 517 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Brian Jonathan Nguyen, MD's MIPS final score?
The 2023 MIPS final score is 74.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.