Katherine Tzou, MD
NPI 1053530691 · Radiation Oncology Physician · Aurora, CO
Enrolled with Medicare as Practitioner - Radiation Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine Tzou, MD is a Radiation Oncology Physician provider in Aurora, CO (NPI 1053530691).
Provider details
- NPI number
- 1053530691
- Entity type
- Individual
- Primary specialty
- Radiation Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- DR.0068677 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
19 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
1,470 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 395 | $44 |
| Ct Guidance for Insertion of Radiation Therapy Fields77014 | 233 | $44 |
| Calculation of Radiation Therapy Dose77300 | 118 | $32 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 79 | $190 |
| Design and Construction of Complex Radiation Treatment Device77334 | 68 | $60 |
| Radiation Treatment Management, 5 Treatment Sessions77427 | 64 | $190 |
| Prolonged Office Or Other Outpatient Evaluation and Management Service(s) Beyond the Maximum Required Time of the Primary Procedure Which Has Been Selected Using Total Time on the Date of the Primary Service; Each Additional 15 Minutes By the Physician Or |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 3 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Relugolixbrand: Orgovyx | 30 |
| Tamsulosin Hcl | 21 |
| Ondansetronbrand: Ondansetron Odt | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means no Part D record, never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$134 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- 4500 San Pablo Rd SJacksonville, FL 32224-1865Phone: (904) 953-2000
Registry dates
- Enumerated
- 2007-04-24
- Last updated
- 2022-12-08
- Certified
- 2022-12-08
Frequently asked questions
- What is Katherine Tzou's NPI number?
- Katherine Tzou's National Provider Identifier (NPI) is 1053530691, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine Tzou's specialty?
- Katherine Tzou is listed in the NPPES registry with a primary specialty of Radiation Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Katherine Tzou located?
- Katherine Tzou's practice location on file with NPPES is 1665 Aurora Ct, Aurora, CO 80045-2517.
- What is Katherine Tzou's phone number?
- The practice phone number listed in the NPPES registry for Katherine Tzou is (720) 848-4000.
- Does Katherine Tzou accept Medicare?
- Katherine Tzou is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine Tzou's NPI active?
- Yes — Katherine Tzou's NPI (1053530691) is active in the NPPES registry as of the last update on 2022-12-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.