Marie Klish Weeks, MD
Radiation Oncology Physician · Littleton, CO
Marie Klish Weeks, MD is a radiation oncology physician with a practice address in Littleton, Colorado, and NPI 1568434207, issued on Feb 6, 2006. Check the license (Colorado DR.0044401, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Marie Klish Weeks
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- DR.0044401 CO
Self-reported in NPPES; status is on the state search - Practice location
- 22 W Dry Creek Cir, Littleton, CO 80120
- Phone
- (303) 730-4700
- Enumerated
- Feb 6, 2006
- Record last updated
- Feb 19, 2025
- Fax
- (303) 930-8053
- Medicaid ID
- 47687762 CO
- Medicare enrollment
- Enrolled (PECOS I20060905000181); accepts Medicare assignment
- Medical or professional school
- University Of North Carolina At Chapel Hill School Of Medicine, 2000
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 111 in Colorado → Look up another NPI →
Also registered at 22 W Dry Creek Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Carly AndrewsOncology Registered Nurse1871467035
- Chelsea Batten Cook, PA-CPhysician Assistant1750794905
- Florencia Benton, M.D.Hematology & Oncology Physician1427203033
- Manojkumar Bupathi, M.D.Hematology & Oncology Physician1265675433
- Caela GraumannRegistered Nurse1659161198
- Lauren HerreraHematology & Oncology Physician1710828264
Verify Marie Klish Weeks in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0044401Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
84% fewer Medicare Part D claims than the average radiation oncology physician in 2024
21 Medicare Part D claims for 15 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
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): 88.2 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: $531.37
23 payments; by number, the most common kind was food and beverage; the largest payer was Novartis Pharmaceuticals Corporation. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Rocky Mountain Cancer Centers LLPLone Tree, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Marie Klish Weeks among 111 radiation oncology physician records in Colorado
Marie Klish Weeks, MD is one of 111 radiation oncology physician records with a practice address in Colorado. 86% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 58% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2000 · median 2007 among the 88 with a school on file
- Record last updated2025 · 50% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Colorado
There are 111 radiation oncology physician records in Colorado.
All 111 in Colorado → Every provider in Littleton → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Charles Leonard, MDLittleton, CO 801201811971963
- Lee McNeely, M.D.Littleton, CO 801221285618835
- Mark Edson, M.D., PH.D.Lone Tree, CO 801241447543582
- Charles Mateskon, MDLone Tree, CO 801241639279763
- Jacob Shabason, MDLone Tree, CO 801241700176534
- Damon Smith, M.D.Lone Tree, CO 801241760480123
- John Sohayda, MDLone Tree, CO 801241063549632
- Jeffrey Gilroy, MDEnglewood, CO 801131538177514
Common questions
What is Marie Klish Weeks, MD's NPI number?
Marie Klish Weeks, MD's National Provider Identifier (NPI) is 1568434207, issued on Feb 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Marie Klish Weeks, MD located?
The NPPES record lists a practice address at 22 W Dry Creek Cir, Littleton, CO, 80120. Phone: (303) 730-4700. Providers update this record themselves, so call before visiting.
How can I verify Marie Klish Weeks, MD's license?
NPPES lists Colorado license number DR.0044401, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Marie Klish Weeks, MD prescribe under Medicare Part D?
In 2024, Marie Klish Weeks, MD had 21 Medicare Part D claims for 15 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Marie Klish Weeks, MD's MIPS final score?
The 2023 MIPS final score is 88.2 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.