Katherine Tzou, MD
Radiation Oncology Physician · Aurora, CO
Katherine Tzou, MD is a radiation oncology physician with a practice address in Aurora, Colorado, and NPI 1053530691, issued on Apr 24, 2007. Check the license (Colorado DR.0068677, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Katherine Tzou
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- DR.0068677 CO
Self-reported in NPPES; status is on the state search - Practice location
- 1665 Aurora CT, Aurora, CO 80045
- Phone
- (720) 848-4000
- Enumerated
- Apr 24, 2007
- Record last updated
- Dec 8, 2022
- Medicare enrollment
- Enrolled (PECOS I20220729000061); accepts Medicare assignment
- Medical or professional school
- Ohio State University College Of Medicine, 2007
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 111 in Colorado → Look up another NPI →
Also registered at 1665 Aurora CT
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Julia Andrade, PA-CMedical Physician Assistant1174241822
- Mathew Angelos, MD, PHDHematology & Oncology Physician1487141149
- Diana Antenucci, NPAdult Health Nurse Practitioner1902583016
- Cynthia Armstrong, PT, DPTPhysical Therapist1730192642
Verify Katherine Tzou in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0068677Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
18% fewer Medicare Part D claims than the average radiation oncology physician in 2024
110 Medicare Part D claims for 41 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. Brand-name drugs were 28% of claims.
Most prescribed
- Orgovyx30 claims
- Tamsulosin Hcl21 claims
- Ondansetron Odt11 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): 97.6 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: $134.26
1 payment: food and beverage; the largest payer was Elekta, Inc. 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
- University Physicians IncorporatedAurora, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Tzou among 111 radiation oncology physician records in Colorado
Katherine Tzou, 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 2007, is newer than 42% of them.
- NPI issued2007 · 42% of these records are older, 44% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileYes · 79% of these records are
- Graduated2007 · median 2007 among the 88 with a school on file
- Record last updated2022 · 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 Aurora → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Mackenzie Daly, MDAurora, CO 800451215022611
- Christine Fisher, M.D.Aurora, CO 800451265643597
- Karyn Goodman, M.D.Aurora, CO 800451275670671
- Brian Kavanagh, MDAurora, CO 800451518074350
- Ryan Lanning, M.D., PHD.Aurora, CO 800451023302148
- Arthur Liu, MDAurora, CO 800451144288093
- Michelle Ludwig, M.D.Aurora, CO 800451316269269
- Sarah Milgrom, M.D.Aurora, CO 800451992937312
Common questions
What is Katherine Tzou, MD's NPI number?
Katherine Tzou, MD's National Provider Identifier (NPI) is 1053530691, issued on Apr 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Tzou, MD located?
The NPPES record lists a practice address at 1665 Aurora CT, Aurora, CO, 80045. Phone: (720) 848-4000. Providers update this record themselves, so call before visiting.
How can I verify Katherine Tzou, MD's license?
NPPES lists Colorado license number DR.0068677, 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 Katherine Tzou, MD prescribe under Medicare Part D?
In 2024, Katherine Tzou, MD had 110 Medicare Part D claims for 41 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is Katherine Tzou, MD's MIPS final score?
The 2023 MIPS final score is 97.6 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.