Charles Dayrit Lopez, M.D.
Medical Oncology Physician · Portland, OR
Charles Dayrit Lopez, M.D. is a medical oncology physician with a practice address in Portland, Oregon, and NPI 1851473060, issued on Oct 19, 2006. Check the license (Oregon MD23375, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Charles Dayrit Lopez
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD23375 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3181 SW Sam Jackson Park RD, Portland, OR 97239
- Phone
- (503) 494-6594
- Enumerated
- Oct 19, 2006
- Record last updated
- Jul 26, 2007 (not updated in 19 years: call before relying on the address or phone)
- Medicaid IDs
- 8286643 WA
287397 OR - Medicare enrollment
- Enrolled (PECOS I20081202000647); accepts Medicare assignment
- Medical or professional school
- University Of California, San Francisco School Of Medicine, 1991
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 107 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 Charles Dayrit Lopez in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD23375Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
59% fewer Medicare Part D claims than the average medical oncology physician in 2024
287 Medicare Part D claims for 37 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 19% of claims. 20 claims were for opioids.
Most prescribed
- Dexamethasone42 claims
- Loperamide41 claims
- Ondansetron Hcl39 claims
- Prochlorperazine Maleate26 claims
- Ursodiol17 claims
- Creon13 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 ServicesBeaverton, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Charles Dayrit Lopez among 107 medical oncology physician records in Oregon
Charles Dayrit Lopez, M.D. is one of 107 medical oncology physician records with a practice address in Oregon. 79% 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 19% of them.
- NPI issued2006 · 19% of these records are older, 49% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1991 · median 2003 among the 76 with a school on file
- Record last updated2007 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Oregon practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Oregon
There are 107 medical oncology physician records in Oregon.
All 107 in Oregon → Every provider in Portland → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Tomasz Beer, MDPortland, OR 972391669487179
- Charles Blanke, MDPortland, OR 972391639187198
- Jeremy Cetnar, M.D.Portland, OR 972391104804970
- Julie Graff, M.D.Portland, OR 972391942445952
- Elizabeth Loggers, M.D., PH.D.Portland, OR 972391477523637
- Shiuh-Wen Luoh, MDPortland, OR 972391619982113
- Rosemarie Mannino, MDPortland, OR 972391649392135
- Zahi Mitri, M.D.Portland, OR 972391942514476
Common questions
What is Charles Dayrit Lopez, M.D.'s NPI number?
Charles Dayrit Lopez, M.D.'s National Provider Identifier (NPI) is 1851473060, issued on Oct 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Charles Dayrit Lopez, M.D. located?
The NPPES record lists a practice address at 3181 SW Sam Jackson Park RD, Portland, OR, 97239. Phone: (503) 494-6594. Providers update this record themselves, so call before visiting.
How can I verify Charles Dayrit Lopez, M.D.'s license?
NPPES lists Oregon license number MD23375, 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 Charles Dayrit Lopez, M.D. prescribe under Medicare Part D?
In 2024, Charles Dayrit Lopez, M.D. had 287 Medicare Part D claims for 37 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Charles Dayrit Lopez, 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.