Dr. Merina Thomas, MD
- Medicare services, 2024
- 9,376
- Medicare patients, 2024
- 413
- Part D claims, 2024
- 125
- Publications
- 15
- Clinical trials
- 1
- Practice address
- 3181 SW Sam Jackson Park Road, Portland, OR 97239
- Practice phone
- Call (503) 494-9000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Thomas' professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Merina Thomas is a retina specialist (ophthalmology) physician in Portland, Oregon
Dr. Thomas practices at OHSU Hospital in Portland, Oregon, part of State of Oregon.
Dr. Thomas' NPI, 1811251820, was assigned on June 25, 2012. Dr. Thomas holds Oregon license MD186970.
- NPI
- 1811251820NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1254631567
- NPI enumeration date
- June 25, 2012
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (503) 494-9000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 40
- Medical school graduation
- 2012
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Merina Thomas practices at OHSU Hospital in Portland, Oregon
Dr. Thomas' primary practice is OHSU Hospital, at 3181 SW Sam Jackson Park Road, Portland, OR 97239 in Multnomah County. The practice phone is (503) 494-9000.
- OHSU Hospital3181 SW Sam Jackson Park Road, Portland, OR 97239 · Multnomah CountyPhone(503) 494-9000
Source: Dmand AI Affiliation Data
Dr. Merina Thomas is affiliated with 2 sites of care and 1 medical group
Dr. Thomas' primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. The medical group on file is Oregon Health & Science University (OHSU). Dmand AI also links Dr. Thomas to 1 more clinical lab, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Merina Thomas' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Thomas practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| OHSU Hospital | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across State of Oregon and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Merina Thomas is one of 33 retina specialist (ophthalmology) physicians in Oregon
Retina specialist is Dr. Thomas' primary specialty in the NPI Registry, under taxonomy code 207WX0107X. Dmand AI has Dr. Thomas' licenses on file in 2 states: Oregon and Michigan.
Specialties and state licenses
- Retina specialist (ophthalmology), OregonPrimary
- Ophthalmology, Michigan
Retina specialist (ophthalmology) physicians near Dr. Thomas
Counts of retina specialist (ophthalmology) physicians with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Merina Thomas billed Medicare for 9,376 services in 2024
CMS data shows 9,376 Medicare services from Dr. Thomas across 9 procedure codes in 2024, for 413 Medicare patients. Medicare paid $781,219 for them.
Dr. Thomas' Medicare services by type, 2023 to 2024
- 2023
- 2024
- Drugs given in the office
- 2023: 9322024: 6,739623%
- Tests and treatments
- 2023: 1,4412024: 1,5125%
- Surgery
- 2023: 8132024: 71612%
- Office and hospital visits
- 2023: 4252024: 37612%
- Other services
- 2023: 02024: 33
Where Dr. Thomas' Medicare services took place, 2024
- In an office8,33989%
- In a facility1,03711%
Dr. Thomas compared with the Oregon median for retina specialist (ophthalmology) physicians, 2024
- Dr. Thomas
- Oregon median
- Medicare services
- 9,376vs 10,41010% below
- Medicare patients
- 413vs 46611% below
- Part D claims
- 64vs 23373% below
Medians across 34 retina specialist (ophthalmology) physicians in Oregon with Dmand AI profiles that report each measure.
Dr. Thomas' most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
Need commercial claims for Dr. Thomas?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Thomas and other retina specialist (ophthalmology) physicians in Oregon.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Merina Thomas treated 413 Medicare patients in 2024, average age 77
CMS counts 413 Medicare patients who saw Dr. Thomas in 2024. The largest group is 75 to 84, with 159 patients. 72% of them have high blood pressure, and 62% have high cholesterol. 12% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Thomas' median patient age at 75, with 66% women.
Dr. Thomas' Medicare patients by age, 2024
Dr. Thomas' Medicare patients by sex, 2024
- Women25462%
- Men15938%
Chronic conditions among Dr. Thomas' Medicare patients, 2024
- High blood pressure72%
- High cholesterol62%
- Arthritis34%
- Diabetes32%
- Chronic kidney disease26%
- Ischemic heart disease22%
- Mood disorders22%
- Atrial fibrillation21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Thomas' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 75
Patient panel by sex, all payers
- Women66%
- Men33%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Merina Thomas wrote 125 Medicare Part D claims in 2024
In 2024, Dr. Thomas wrote 125 Medicare Part D claims for 51 patients. 82% of them were for generic drugs. CMS names the drug for 64 of them, across 4 drugs with 11 or more claims each, at $1,105 in total drug cost. In 2023, CMS named 23 claims across 1 drug.
Dr. Thomas' Part D claims by kind of drug, 2024
- Generic102 claims82%
- Brand-name23 claims18%
Dr. Thomas' most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 232024: 64178%
Drugs named by CMS: 4 in 2024, 1 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. Merina Thomas scored 99 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 99 out of 100 for Dr. Thomas for performance year 2024, reported through an alternative payment model (APM). Dr. Thomas accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Thomas as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Dr. Thomas' MIPS scores, performance year 2024
- 99of 100Final score
- 84.3of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Sources: Doctors and Clinicians National Downloadable File (CMS); Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026; and Doctors and Clinicians Utilization Data (CMS)
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Dr. Merina Thomas has 15 publications on record
Dmand AI links 15 papers to Dr. Thomas, published from 2015 to 2025. 2022 was the busiest year, with 3. The most frequent topics are Visual Acuity and Vision Disorders. Dr. Thomas has published most often in JAMA Ophthalmol. Dr. Thomas' most frequent co-authors are Eun Young Choi, MD, Ambar Faridi, MD and Esther Kim, MD.
Dr. Thomas' papers by year, 2015 to 2025
Topics Dr. Thomas writes about most
- Visual Acuity
- Vision Disorders
Dr. Thomas' most frequent co-authors
Recent publications by Dr. Thomas
See who Dr. Thomas researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Thomas works with, so you can find a warm path to the right retina specialist (ophthalmology) physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Merina Thomas has worked on 1 clinical trial
Dmand AI links Dr. Thomas to 1 clinical trial. 1 is still active or recruiting. Conditions studied include Diabetic Retinopathy and Diabetic Angiopathies.
Conditions in Dr. Thomas' trials
- Diabetic Retinopathy
- Diabetic Angiopathies
Investigators on the most trials with Dr. Thomas
- Kavita V. Bhavsar, MD1 shared trial
- John Peter Campbell, MD, MPH1 shared trial
- Rene Choi, MD, PhD1 shared trial
Recent clinical trials with Dr. Thomas
WF and PR OCTA in Diabetic Retinopathy (opens in a new tab)
Sources: Dmand AI Research Linkage; and ClinicalTrials.gov (National Library of Medicine)
Dr. Merina Thomas received $863 in industry payments from 2016 to 2019
CMS Open Payments shows 10 general payments to Dr. Thomas from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 95% of the total. Allergan Inc. paid the most, $384.
General payments to Dr. Thomas by program year, 2016 to 2019
General payments to Dr. Thomas by kind, 2016 to 2019
- Food and beverage$82395%
- Education$405%
Companies that paid Dr. Thomas the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. Merina Thomas's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| Clinical trials and co-investigators | Dmand AI Research LinkageClinicalTrials.gov (National Library of Medicine) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Merina Thomas
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Merina Thomas' NPI number?
Dr. Merina Thomas' NPI number is 1811251820. It was assigned on June 25, 2012, and it is active in the NPI Registry.
What kind of doctor is Dr. Merina Thomas?
Dr. Merina Thomas is a retina specialist (ophthalmology) physician in Portland, Oregon. The primary specialty in the NPI Registry is Retina Specialist (Ophthalmology) Physician (taxonomy code 207WX0107X).
Where does Dr. Merina Thomas practice?
Dr. Thomas practices at 3181 SW Sam Jackson Park Road, Portland, OR 97239. Dr. Thomas' primary practice is OHSU Hospital in Portland, Oregon, part of State of Oregon. Dmand AI also links Dr. Thomas to 1 clinical lab.
What is Dr. Merina Thomas' office phone number?
The practice phone on file for Dr. Thomas is (503) 494-9000.
What is Dr. Merina Thomas' medical license number?
Dr. Thomas holds Oregon license MD186970, one of the licenses on file in 2 states.
Which states has Dr. Merina Thomas been licensed in?
Dmand AI has state licenses on file for Dr. Thomas in Oregon and Michigan.
Which hospitals is Dr. Merina Thomas affiliated with?
Dr. Thomas practices at OHSU Hospital in Portland, Oregon.
What medical group is Dr. Merina Thomas part of?
Dr. Thomas is linked to Oregon Health & Science University (OHSU).
Does Dr. Merina Thomas accept Medicare?
Yes. CMS data shows Dr. Thomas billed Medicare for 9,376 services in 2024, and Dr. Thomas accepts Medicare assignment.
Does Dr. Merina Thomas offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Thomas as offering telehealth services.
Show 8 more questionsShow fewer questions
What is Dr. Merina Thomas' MIPS score?
Dr. Thomas' MIPS final score for performance year 2024 is 99 out of 100, reported through an alternative payment model (APM).
How many Medicare patients does Dr. Merina Thomas see?
CMS counts 413 Medicare patients who saw Dr. Thomas in 2024, with an average age of 77.
What services does Dr. Merina Thomas bill to Medicare?
In 2024, Dr. Thomas' most billed Medicare services were injected or infused drug (J2777), eye exam or test (92134) and surgery: eye (67028).
What drugs does Dr. Merina Thomas prescribe most?
In 2024 Medicare Part D data, Dr. Thomas' most prescribed drugs by claims were Erythromycin, Dorzolamide-Timolol and Ketorolac Tromethamine.
Has Dr. Merina Thomas received payments from drug or device companies?
CMS Open Payments shows $863 in general payments to Dr. Thomas from 5 companies from 2016 to 2019. The largest total came from Allergan Inc.
How long has Dr. Merina Thomas been practicing?
Dr. Thomas graduated from medical school in 2012, 14 years ago.
Does Dr. Merina Thomas do research?
Dmand AI links 15 publications to Dr. Thomas, published from 2015 to 2025. Dr. Thomas has worked on 1 clinical trial.
Who does Dr. Merina Thomas publish with?
Dr. Thomas' most frequent co-authors are Eun Young Choi, MD (2 shared papers), Ambar Faridi, MD (2 shared papers) and Esther Kim, MD (2 shared papers).
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