Aiyin Chen, M.D.
Glaucoma Specialist (Ophthalmology) Physician · Portland, OR
Aiyin Chen, M.D. is a glaucoma specialist (ophthalmology) physician with a practice address in Portland, Oregon, and NPI 1629305131, issued on Nov 5, 2009. Check the license (Oregon 182243, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Aiyin Chen
- Credential
- M.D.
- Primary taxonomy
- Glaucoma Specialist (Ophthalmology) Physician 207WX0009X
- License number
- 182243 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3303 SW Bond Ave, Portland, OR 97239
- Phone
- (503) 494-3000
- Enumerated
- Nov 5, 2009
- Record last updated
- Jul 21, 2022
- Fax
- (503) 418-0843
- Medicare enrollment
- Enrolled (PECOS I20170804002678); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 2008
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest glaucoma specialist (ophthalmology) physician records → All 21 in Oregon → Look up another NPI →
Also registered at 3303 SW Bond Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joanna Adams, PA-CSurgical Physician Assistant1538587795
- Courtney Alley, ATCAthletic Trainer1457758344
- Paula Amato, MDReproductive Endocrinology Physician1316027683
- Jamie Anderson, DPTPhysical Therapist1730511635
- Shannon Anderson, PA-CPhysician Assistant1780832402
- Anne Marie Banasky, OTR, CHTOccupational Therapist1164631370
Verify Aiyin Chen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license 182243Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
54% fewer Medicare Part D claims than the average glaucoma specialist (ophthalmology) physician in 2024
1,403 Medicare Part D claims for 225 beneficiaries, against an average of 3,060 among the 430 providers of this specialty who prescribed in Part D. Brand-name drugs were 30% of claims.
Most prescribed
- Latanoprost282 claims
- Dorzolamide-Timolol216 claims
- Brimonidine Tartrate143 claims
- Prednisolone Acetate143 claims
- Brimonidine Tartrate-Timolol51 claims
- Timolol Maleate44 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): 97.8 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: $129.99
2 payments; by number, the most common kind was food and beverage; the largest payer was Apellis Pharmaceuticals, Inc. The 391 providers of this specialty with any payment received $5,284.60 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
- University Professional ServicesAstoria, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Aiyin Chen among 21 glaucoma specialist (ophthalmology) physician records in Oregon
Aiyin Chen, M.D. is one of 21 glaucoma specialist (ophthalmology) physician records with a practice address in Oregon. 95% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 52% of them.
- NPI issued2009 · 52% of these records are older, 38% newer
- In a Medicare fileYes · 95% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2008 · median 2008 among the 16 with a school on file
- Record last updated2022 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0009X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Glaucoma Specialist (Ophthalmology) Physician providers in Oregon
There are 21 glaucoma specialist (ophthalmology) physician records in Oregon.
All 21 in Oregon → Every provider in Portland → Glaucoma Specialist (Ophthalmology) Physician nationwide →
The 8 glaucoma specialist (ophthalmology) physician records with the nearest ZIP codes
- Lorna Edmunds, MD PHDPortland, OR 972391407801756
- Michael Gale, MDPortland, OR 972391356886782
- Eliesa Ing, MDPortland, OR 972391659499317
- Angela Jiang, M.D.Portland, OR 972391104243484
- John Morrison, MDPortland, OR 972391033161997
- Lynn Sun, M.D., PH.D.Portland, OR 972391922460195
- Jonathan Young, MDTigard, OR 972241720492820
- Robert McGlynn, MDPortland, OR 972161669655213
Common questions
What is Aiyin Chen, M.D.'s NPI number?
Aiyin Chen, M.D.'s National Provider Identifier (NPI) is 1629305131, issued on Nov 5, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Aiyin Chen, M.D. located?
The NPPES record lists a practice address at 3303 SW Bond Ave, Portland, OR, 97239. Phone: (503) 494-3000. Providers update this record themselves, so call before visiting.
How can I verify Aiyin Chen, M.D.'s license?
NPPES lists Oregon license number 182243, as entered by the provider. Search the Oregon Medical Board at https://www.oregon.gov/OMB/Pages/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Aiyin Chen, M.D. prescribe under Medicare Part D?
In 2024, Aiyin Chen, M.D. had 1,403 Medicare Part D claims for 225 beneficiaries; the average among glaucoma specialist (ophthalmology) physician prescribers was 3,060. Part D covers Medicare prescriptions only.
What is Aiyin Chen, M.D.'s MIPS final score?
The 2023 MIPS final score is 97.8 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.