Catherine Anne O'Brien, M.D.
Hematology & Oncology Physician · McMinnville, OR
Catherine Anne O'Brien, M.D. is a hematology & oncology physician with a practice address in McMinnville, Oregon, and NPI 1417994047, issued on Jun 1, 2006. Check the license (Oregon MD25920, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Catherine Anne O'Brien
- Credential
- M.D.
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD25920 OR
Self-reported in NPPES; status is on the state search - Practice location
- 2700 SE Stratus Ave., McMinnville, OR 97128
- Phone
- (503) 435-6590
- Enumerated
- Jun 1, 2006
- Record last updated
- Jul 8, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (503) 435-6591
- Medicaid ID
- 005904 OR
- Medicare enrollment
- Enrolled (PECOS I20060718000043); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 138 in Oregon → Look up another NPI →
Also registered at 2700 SE Stratus Ave.
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Cristian Slough, M.D.Otolaryngology Physician1952504540
Verify Catherine Anne O'Brien in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD25920Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,668 Medicare Part D claims for 299 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 75 claims were for opioids.
Most prescribed
- Tamoxifen Citrate230 claims
- Mirtazapine84 claims
- Eliquis79 claims
- Prednisone71 claims
- Anastrozole70 claims
- Lenalidomide68 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): 87.8 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: $300.83
12 payments; by number, the most common kind was food and beverage; the largest payer was Merck Sharp & Dohme LLC. The 8,560 providers of this specialty with any payment received $7,481.41 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
- Oregon Oncology Specialists LLPMcMinnville, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Catherine Anne O'Brien among 138 hematology & oncology physician records in Oregon
Catherine Anne O'Brien, M.D. is one of 138 hematology & oncology physician records with a practice address in Oregon. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 18% of them.
- NPI issued2006 · 18% of these records are older, 46% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2000 · median 2001 among the 97 with a school on file
- Record last updated2021 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Oregon
There are 138 hematology & oncology physician records in Oregon.
All 138 in Oregon → Every provider in McMinnville → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Gerald Gibbs, M.D.Hillsboro, OR 971231386710903
- Jeyanthi Ramanarayanan, MDAstoria, OR 971031538269394
- Sarunas Sliesoraitis, DO, PHARM DAstonia, OR 971031003043704
- Jeffrey McWilliams, M.D.West Linn, OR 970681114920899
- Charles Doolittle, M.D.Tualatin, OR 970621487873097
- Ian Schnadig, M.D.Tualatin, OR 970621467664839
- Adam Leikensohn, M.D.The Dalles, OR 970581720046097
- Jacqueline Vuky, M.D.Portland, OR 972101851462998
Common questions
What is Catherine Anne O'Brien, M.D.'s NPI number?
Catherine Anne O'Brien, M.D.'s National Provider Identifier (NPI) is 1417994047, issued on Jun 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Catherine Anne O'Brien, M.D. located?
The NPPES record lists a practice address at 2700 SE Stratus Ave., McMinnville, OR, 97128. Phone: (503) 435-6590. Providers update this record themselves, so call before visiting.
How can I verify Catherine Anne O'Brien, M.D.'s license?
NPPES lists Oregon license number MD25920, 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 Catherine Anne O'Brien, M.D. prescribe under Medicare Part D?
In 2024, Catherine Anne O'Brien, M.D. had 1,668 Medicare Part D claims for 299 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Catherine Anne O'Brien, M.D.'s MIPS final score?
The 2023 MIPS final score is 87.8 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.