Thanh-Lan Trong Quan, MD
Ophthalmology Physician · Westminster, CA
Thanh-Lan Trong Quan, MD is an ophthalmology physician with a practice address in Westminster, California, and NPI 1831133511, issued on Jun 15, 2006. Check the license (California G69821, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thanh-Lan Trong Quan
- Credential
- MD
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- G69821 CA
Self-reported in NPPES; status is on the state search - Practice location
- 10362 Bolsa Ave, Westminster, CA 92683
- Phone
- (714) 531-4804
- Enumerated
- Jun 15, 2006
- Record last updated
- Apr 8, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (714) 531-8232
- Medicaid ID
- 00G698211 CA
- Medicare enrollment
- Enrolled (PECOS I20080128000331); accepts Medicare assignment
- Medical or professional school
- University Of California, Geffen School Of Medicine, 1989
- Entity
- Type 1 · individual
Also registered at 10362 Bolsa Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Minh Hoang, MDPediatrics Physician1316974561
- Loc Nguyen, MDPediatrics Physician1568499630
- Thao Nguyen, MDPediatrics Physician1831126036
- Co Pham, MDObstetrics & Gynecology Physician1558392159
- Hang TranRegistered Nurse1780703082
Verify Thanh-Lan Trong Quan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G69821Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
6.6 times the Medicare Part D claims of the average ophthalmology physician in 2024
9,947 Medicare Part D claims for 1,335 beneficiaries, against an average of 1,518 among the 16,459 providers of this specialty who prescribed in Part D. Brand-name drugs were 64% of claims.
Most prescribed
- Lumigan1,128 claims
- Restasis987 claims
- Dorzolamide-Timolol924 claims
- Cyclosporine763 claims
- Xiidra653 claims
- Latanoprost566 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 MIPS final score for 2023 (Medicare payment program): 30 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $1,868.82
69 payments; by number, the most common kind was food and beverage; the largest payer was Bausch & Lomb Americas 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.
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
Other ophthalmology physician records in California
- Sam Abbassi, MD, MSWest Hills, CA1881937720
- Richard Abbott, M.D.San Francisco, CA1346276573
- Jean-Paul Abboud, M.D., PH.D.Del Mar, CA1760776728
- Nizar Abdelfattah, MDPasadena, CA1801359393
- Parastou Abedi, MDAliso Viejo, CA1720067333
- Shahla Abedi, MDAliso Viejo, CA1467431072
- Lilit Ablabutyan, M.D.Glendale, CA1497013064
- Nathan Abraham, M.D.Valencia, CA1306224456
- James Abrams, M.D.San Bruno, CA1912903329
- Adam Abroms, MDWestlake Village, CA1497743702
Common questions
What is Thanh-Lan Trong Quan, MD's NPI number?
Thanh-Lan Trong Quan, MD's National Provider Identifier (NPI) is 1831133511, issued on Jun 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Thanh-Lan Trong Quan, MD located?
The NPPES record lists a practice address at 10362 Bolsa Ave, Westminster, CA, 92683. Phone: (714) 531-4804. Providers update this record themselves, so call before visiting.
How can I verify Thanh-Lan Trong Quan, MD's license?
NPPES lists California license number G69821, 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 Thanh-Lan Trong Quan, MD prescribe under Medicare Part D?
In 2024, Thanh-Lan Trong Quan, MD had 9,947 Medicare Part D claims for 1,335 beneficiaries; the average among ophthalmology physician prescribers was 1,518. Part D covers Medicare prescriptions only.
What is Thanh-Lan Trong Quan, MD's MIPS final score?
The 2023 MIPS final score is 30 of 100. 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.