Muen Yang, O.D.
Optometrist · Clackamas, OR
Muen Yang, O.D. is an optometrist with a practice address in Clackamas, Oregon, and NPI 1659823938, issued on Nov 2, 2016. Check the license (Oregon 4658, as entered in NPPES) with the Oregon board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Muen Yang
- Credential
- O.D.
- Primary taxonomy
- Optometrist 152W00000X
- License numbers
- 4658 OR
008530 NY
OD61395717 WA
Self-reported in NPPES; status is on the state search - Practice location
- 12100 SE Stevens CT Ste 106, Clackamas, OR 97086
- Phone
- (800) 813-2000
- Enumerated
- Nov 2, 2016
- Record last updated
- Mar 5, 2026
- Medicare enrollment
- Enrolled (PECOS I20230615000404); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest optometrist records → All 944 in Oregon → Look up another NPI →
Also registered at 12100 SE Stevens CT Ste 106
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alise Chin-Shreffler, ODOptometrist1689150609
- Heather Gallagher, LDOOptician1598853897
- Dinelli Monson, M.D.Ophthalmology Physician1992940613
- Kellen Plomski, OD, MPHOptometrist1902461361
- Mithlesh Sharma, M.D.Ophthalmology Physician1528052719
- Bernadette Silva, ODOptometrist1881979938
Verify Muen Yang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Oregon board licenses this profession
Search for license 4658Check 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% fewer Medicare Part D claims than the average optometrist in 2024
252 Medicare Part D claims for 94 beneficiaries, against an average of 277 among the 33,128 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims.
Most prescribed
- Latanoprost97 claims
- Brimonidine Tartrate19 claims
- Dorzolamide-Timolol17 claims
- Prednisolone Acetate17 claims
- Cyclosporine16 claims
- Neomycin-Polymyxin-Dexameth16 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: $45.09
1 payment: food and beverage; the largest payer was Johnson & Johnson Vision Care, Inc. The 34,453 providers of this specialty with any payment received $769.99 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
- Kaiser Foundation Health Plan OF The NorthwestPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Muen Yang among 944 optometrist records in Oregon
Muen Yang, O.D. is one of 944 optometrist records with a practice address in Oregon. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 73% of them.
- NPI issued2016 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 69% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2016 · median 2010 among the 552 with a school on file
- Record last updated2026 · 65% 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 Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Optometrist providers in Oregon
There are 944 optometrist records in Oregon.
All 944 in Oregon → Every provider in Clackamas → Optometrist nationwide →
The 8 optometrist records with the nearest ZIP codes
- Samuel Adelman, O.D.Happy Valley, OR 970861043545122
- William Berk, O.D.Happy Valley, OR 970861275630808
- Anne Berk, O.D.Happy Valley, OR 970861609920701
- Carrie Breeden, O.D.Clackamas, OR 970861528216793
- Nancy Brock, O.D.Happy Valley, OR 970861447306360
- Craig Fujiwara, O.D.Portland, OR 970861619911245
- Sarah Kane, O.D.Portland, OR 970861952527236
- Kim Le, O.D.Happy Valley, OR 970861881904159
Common questions
What is Muen Yang, O.D.'s NPI number?
Muen Yang, O.D.'s National Provider Identifier (NPI) is 1659823938, issued on Nov 2, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Muen Yang, O.D. located?
The NPPES record lists a practice address at 12100 SE Stevens CT Ste 106, Clackamas, OR, 97086. Phone: (800) 813-2000. Providers update this record themselves, so call before visiting.
How can I verify Muen Yang, O.D.'s license?
NPPES lists Oregon license number 4658, as entered by the provider. Search the Oregon board that licenses this profession; the NPPES record confirms identity only.
How much does Muen Yang, O.D. prescribe under Medicare Part D?
In 2024, Muen Yang, O.D. had 252 Medicare Part D claims for 94 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.