Deimante Maria Tamkus, M.D.
Medical Oncology Physician · Chicago, IL
Deimante Maria Tamkus, M.D. is a medical oncology physician with a practice address in Chicago, Illinois, and NPI 1881624906, issued on Jul 4, 2006. Check the license (Illinois 036-106485, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Deimante Maria Tamkus
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- 036-106485 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1950 W Polk St, Chicago, IL 60612
- Phone
- (312) 864-6000
- Enumerated
- Jul 4, 2006
- Record last updated
- Apr 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid IDs
- 1881624906 MI
4886651 MI - Medicare enrollment
- Enrolled (PECOS I20190611001937); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1950 W Polk St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Deimante Maria Tamkus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 036-106485Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average medical oncology physician in 2024
188 Medicare Part D claims for 39 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 27% of claims.
Most prescribed
- Anastrozole35 claims
- Ibrance14 claims
- Ondansetron Hcl13 claims
- Duloxetine Hcl12 claims
- Inlyta11 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 practice group's MIPS final score for 2023 (Medicare payment program): 84.6 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. 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, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $245.98
9 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. 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
- Cook CountyChicago, IL
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Illinois
There are 182 medical oncology physician records in Illinois.
Other medical oncology physician records in Illinois
- Ahmad Abu-HashyehMoline, IL1326525114
- Matthew Adess, MDHighland Park, IL1629166442
- Misbahuddin Ahmed, MDLombard, IL1922117811
- Syed Ahmed, MDOak Brook, IL1689867541
- Eugene Ahn, M.D.Chicago, IL1093911307
- Mebea Aklilu, MDChicago, IL1376527739
- Alhareth Alsayed, M.DSterling, IL1447601059
- Manik Amin, MDChicago, IL1265689889
- Saad Arain, M.D.Evanston, IL1104212992
- Mohammad Atiq, M.D.Chicago, IL1851719967
Common questions
What is Deimante Maria Tamkus, M.D.'s NPI number?
Deimante Maria Tamkus, M.D.'s National Provider Identifier (NPI) is 1881624906, issued on Jul 4, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Deimante Maria Tamkus, M.D. located?
The NPPES record lists a practice address at 1950 W Polk St, Chicago, IL, 60612. Phone: (312) 864-6000. Providers update this record themselves, so call before visiting.
How can I verify Deimante Maria Tamkus, M.D.'s license?
NPPES lists Illinois license number 036-106485, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Deimante Maria Tamkus, M.D. prescribe under Medicare Part D?
In 2024, Deimante Maria Tamkus, M.D. had 188 Medicare Part D claims for 39 beneficiaries; the average among medical oncology physician prescribers was 703. Part D covers Medicare prescriptions only.
What is Deimante Maria Tamkus, M.D.'s MIPS final score?
The 2023 MIPS final score is 84.6 of 100, reported for the practice group. 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.