Merina Thomas, M.D.
Retina Specialist (Ophthalmology) Physician · Portland, OR
Merina Thomas, M.D. is a retina specialist (ophthalmology) physician with a practice address in Portland, Oregon, and NPI 1811251820, issued on Jun 25, 2012. Check the license (Oregon MD186970, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Merina Thomas
- Credential
- M.D.
- Primary taxonomy
- Retina Specialist (Ophthalmology) Physician 207WX0107X
- License number
- MD186970 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD, Portland, OR 97239
- Phone
- (503) 494-3000
- Enumerated
- Jun 25, 2012
- Record last updated
- Jul 16, 2025
- Fax
- (503) 494-4286
- Medicare enrollment
- Enrolled (PECOS I20180822001442); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest retina specialist (ophthalmology) physician records → All 36 in Oregon → Look up another NPI →
Also registered at 3181 SW Sam Jackson Park RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Alex AamodtCritical Care Medicine Registered Nurse1154257590
- Jefferson Abaricia, MD, PHDStudent in an Organized Health Care Education/Training Program1073215711
- Kenneth Abbey, MDAnesthesiology Physician1588779342
- Matthew Abbott, PA-CMedical Physician Assistant1154738003
- Ayah Abdelsalam Megahed, MD, MSCVascular & Interventional Radiology Physician1023503596
- Obada Abdulrazzak, MDStudent in an Organized Health Care Education/Training Program1598567430
Verify Merina Thomas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD186970Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
80% fewer Medicare Part D claims than the average retina specialist (ophthalmology) physician in 2024
125 Medicare Part D claims for 51 beneficiaries, against an average of 620 among the 1,449 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Erythromycin19 claims
- Dorzolamide-Timolol18 claims
- Ketorolac Tromethamine15 claims
- Prednisolone Acetate12 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).
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).
Merina Thomas among 36 retina specialist (ophthalmology) physician records in Oregon
Merina Thomas, M.D. is one of 36 retina specialist (ophthalmology) physician records with a practice address in Oregon. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2012, is newer than 75% of them.
- NPI issued2012 · 75% of these records are older, 11% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 97% of these records are
- Graduated2012 · median 2006 among the 35 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207WX0107X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Retina Specialist (Ophthalmology) Physician providers in Oregon
There are 36 retina specialist (ophthalmology) physician records in Oregon.
All 36 in Oregon → Every provider in Portland → Retina Specialist (Ophthalmology) Physician nationwide →
The 8 retina specialist (ophthalmology) physician records with the nearest ZIP codes
- Marcus AltmanPortland, OR 972391699265744
- Steven Bailey, MDPortland, OR 972391114032687
- Kavita Bhavsar, MDPortland, OR 972391720216765
- John Campbell, M.D., M.P.HPortland, OR 972391255598041
- Lesley Everett, M.D., PH.D.Portland, OR 972391528420841
- Christina Flaxel, MDPortland, OR 972391629029079
- Thomas Hwang, MDPortland, OR 972391508819947
- Andreas Lauer, MDPortland, OR 972391265485890
Common questions
What is Merina Thomas, M.D.'s NPI number?
Merina Thomas, M.D.'s National Provider Identifier (NPI) is 1811251820, issued on Jun 25, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Merina Thomas, M.D. located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD, Portland, OR, 97239. Phone: (503) 494-3000. Providers update this record themselves, so call before visiting.
How can I verify Merina Thomas, M.D.'s license?
NPPES lists Oregon license number MD186970, 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 Merina Thomas, M.D. prescribe under Medicare Part D?
In 2024, Merina Thomas, M.D. had 125 Medicare Part D claims for 51 beneficiaries; the average among retina specialist (ophthalmology) physician prescribers was 620. Part D covers Medicare prescriptions only.
What is Merina Thomas, 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.