Doctor profile · Federal record
Dr. Ellen Ziaja, MD
Radiation Oncology Physician (CMS: Radiation Oncology) · Summit, WI
- NPI 1104868181
- Accepts Medicare
- 33 yrs in practice
- Female
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
36500 Aurora Dr
Summit, WI 530664899
(262) 434-1800
fax (414) 649-5309 - Mailing address
-
11516 N Port Washington RD, Ste 202
Mequon, WI 530923441
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- September 15, 2023
- Year of graduation
- 1993 — 33 yrs since
- Specialty taxonomy
- 2085R0001X — NUCC code
- State license (1)
- Wisconsin #39952
- Medicaid
- WI #32461100
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1104868181. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
1,212
Distinct HCPCS
10
Medicare allowed
$107,852
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
77014 |
Ct guidance for insertion of radiation therapy fields | 560 | 99 | $43 | |
77427 |
Radiation treatment management, 5 treatment sessions | 194 | 85 | $184 | |
77300 |
Calculation of radiation therapy dose | 108 | 37 | $32 | |
77334 |
Design and construction of complex radiation treatment device | 91 | 49 | $59 | |
99205 |
New patient office or other outpatient visit, 60-74 minutes | 55 | 55 | $169 | |
G6002 |
Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | 50 | 17 | $20 | |
77263 |
Complex radiation therapy planning | 46 | 46 | $162 | |
77338 |
Design and construction of radiation treatment device for high precision radiation therapy | 30 | 29 | $220 | |
77301 |
High precision radiation therapy planning | 27 | 27 | $409 | |
77280 |
Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | 19 | 18 | $37 |
In context: peer comparison
Among 1 peers in Summit Radiation Oncology Physician, average services per provider: 101. This provider delivers 12× the peer median.Medicare Part D · 2023
Top prescriptions
Total claims
30
Patients
12
Total drug cost
$235
| Drug | Type | Claims | Patients | Total cost |
|---|---|---|---|---|
| Tamsulosin Hcl | Generic | 30 | 12 | $235 |
Hospital affiliations
Frequently asked questions
What is Dr. Ellen Ziaja's medical specialty?
Dr. Ellen Ziaja practices Radiation Oncology Physician in Summit, WI.
Where does Dr. Ellen Ziaja practice?
Dr. Ellen Ziaja practices at 36500 Aurora Dr, Summit, WI 530664899. Office phone: 2624341800.
What is Dr. Ellen Ziaja's NPI?
Dr. Ellen Ziaja's National Provider Identifier (NPI) is 1104868181, issued by NPPES.
Does Dr. Ellen Ziaja accept Medicare assignment?
Yes. Dr. Ellen Ziaja accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Ellen Ziaja commonly perform?
Top Medicare-reported procedures in 2023: Ct guidance for insertion of radiation therapy fields (HCPCS 77014); Radiation treatment management, 5 treatment sessions (HCPCS 77427); Calculation of radiation therapy dose (HCPCS 77300). Source: CMS Medicare Physician & Other Practitioners file.