Alexandra Dos Santos Zimmer, M.D.
Medical Oncology Physician · Portland, OR
Alexandra Dos Santos Zimmer, M.D. is a medical oncology physician with a practice address in Portland, Oregon, and NPI 1548496573, issued on Jun 4, 2009. Check the license (Oregon MD211105, as entered in NPPES) on the Oregon Medical Board; the Medicare figures below come from public CMS files.
- Name
- Alexandra Dos Santos Zimmer
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- MD211105 OR
Self-reported in NPPES; status is on the state search - Practice location
- 3191 SW Sam Jackson Park Road,, Portland, OR 97239
- Phone
- (503) 494-9160
- Enumerated
- Jun 4, 2009
- Record last updated
- Aug 18, 2022
- Medicare enrollment
- Enrolled (PECOS I20220802001265); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 107 in Oregon → Look up another NPI →
Verify Alexandra Dos Santos Zimmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersOregon Medical Board
Search for license MD211105Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
46% fewer Medicare Part D claims than the average medical oncology physician in 2024
378 Medicare Part D claims for 106 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Anastrozole73 claims
- Letrozole56 claims
- Dexamethasone47 claims
- Tamoxifen Citrate37 claims
- Prochlorperazine Maleate36 claims
- Ibrance23 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).
Industry payments in 2024: $1,750.00
1 payment: honoraria; the largest payer was Pfizer Inc. The 3,343 providers of this specialty with any payment received $11,773.47 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
- University Professional ServicesPortland, OR
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alexandra Dos Santos Zimmer among 107 medical oncology physician records in Oregon
Alexandra Dos Santos Zimmer, 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 2009, is newer than 65% of them.
- NPI issued2009 · 65% of these records are older, 32% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1999 · median 2003 among the 76 with a school on file
- Record last updated2022 · 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
- Charles Lopez, M.D.Portland, OR 972391851473060
- Shiuh-Wen Luoh, MDPortland, OR 972391619982113
- Rosemarie Mannino, MDPortland, OR 972391649392135
Common questions
What is Alexandra Dos Santos Zimmer, M.D.'s NPI number?
Alexandra Dos Santos Zimmer, M.D.'s National Provider Identifier (NPI) is 1548496573, issued on Jun 4, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Alexandra Dos Santos Zimmer, M.D. located?
The NPPES record lists a practice address at 3191 SW Sam Jackson Park Road,, Portland, OR, 97239. Phone: (503) 494-9160. Providers update this record themselves, so call before visiting.
How can I verify Alexandra Dos Santos Zimmer, M.D.'s license?
NPPES lists Oregon license number MD211105, 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 Alexandra Dos Santos Zimmer, M.D. prescribe under Medicare Part D?
In 2024, Alexandra Dos Santos Zimmer, M.D. had 378 Medicare Part D claims for 106 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Alexandra Dos Santos Zimmer, 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.