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Edit this profileAt a glance
- 1375 E 19Th Ave, Denver, CO 80218
About Dr. Ballonoff
Based in Denver, CO, Ari P. Ballonoff, MD is listed in the NPI registry under radiation oncology. Ari graduated from University of Colorado School of Medicine, Denver in 2003. According to Medicare claims data, Ari cared for 165 Medicare patients across 222 services. The services billed most often include calculation of radiation therapy dose, complex radiation therapy planning, and design and construction of complex radiation treatment device. NPI 1689720260 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Education & Training
Specialty
Credentials & Licensing
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (303) 338-4545
- Email not available
Practice Locations
1375 E 19TH AVE
Denver, CO 80218
Conditions Commonly Evaluated or Treated
Within Radiation Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Conditions
Cancer care
Most searched conditions
Benign condition
Blood and lymph cancer
Bone cancer
Brain tumors
Cancer emergencies
Chest cancer
Endocrine cancer
Eye cancer
Eye conditions
Foot conditions
Gastrointestinal cancer
- Anal cancer
- Bile duct cancer
- Colon cancer
- Esophageal cancer
- Gallbladder cancer
- Liver cancer
- Pancreatic cancer
- Stomach cancer
Gynecologic cancer
Head & neck cancer
Head and neck cancer
Metastatic cancer
Neurologic condition
Orthopedic conditions
Sarcoma
Skin cancer
Thoracic cancer
Urologic cancer
Vascular conditions
Procedures & services
Most searched procedures
Advanced radiation
Benign treatment
Brain radiation
Cancer treatment
Central nervous system
Consultation
External radiation
- Electron beam therapy
- Image-guided radiation (IGRT)
- IMRT (Targeted intensity radiation)
- RapidArc / VMAT radiation
- Total body irradiation (TBI)
Eye cancer treatment
Follow-up care
Heart treatments
Internal radiation
Pain and symptom relief
Particle therapy
Precision radiation
- Adaptive radiation therapy
- Heart-sparing breath hold radiation (DIBH)
- Spine radiosurgery
- Stereotactic body radiation (SBRT)
- Stereotactic radiosurgery (SRS)
- Tattoo-free radiation
Prostate cancer treatment
Prostate protection
Radiation therapy
Skin cancer treatment
Skin lymphoma treatment
Specialized radiation
Targeted isotopes
Targeted radiation drugs
Treatment planning
Procedures Most Often Billed to Medicare
222 services · 165 patients · 8 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Calculation of radiation therapy dose | Imaging | 77300 |
66 | Less often than most peers in Radiation Oncology |
| Complex radiation therapy planning | Imaging | 77263 |
29 | Less often than most peers in Radiation Oncology |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
28 | Less often than most peers in Radiation Oncology |
| Design and construction of radiation treatment device for high precision radiation therapy | Imaging | 77338 |
25 | Less often than most peers in Radiation Oncology |
| High precision radiation therapy planning | Imaging | 77301 |
25 | Less often than most peers in Radiation Oncology |
| Obtaining respiratory data needed to develop the optimal radiation treatment | Imaging | 77293 |
19 | As often as other peers in Radiation Oncology |
| Management of cranial lesion surgery using radiation over multiple sessions | Imaging | 77435 |
16 | As often as other peers in Radiation Oncology |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
14 | Less often than most peers in Radiation Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other radiation oncologists in Denver 8
Same specialty, same city.
More connections — 21 related providers in 3 groups
Trained at University of Colorado School of Medicine, Denver 7
Other providers in the same specialty who trained at the same institution.
Class of 2003 at University of Colorado School of Medicine, Denver 8
Providers who graduated from the same medical school in the same year.
Also performs Calculation of radiation therapy dose 6
Providers in CO who bill this service to Medicare most often.
Common questions
What kind of doctor is Dr. Ballonoff?
Dr. Ballonoff is a radiation oncologist in Denver, CO. That is the designation recorded for this NPI in the federal registry, where it is listed as “Radiation Oncology”.
NPI registry
What is Dr. Ballonoff's address?
Dr. Ballonoff is listed at 1375 E 19Th Ave, Denver, CO 80218. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How can I make an appointment with Dr. Ballonoff?
The number on file is (303) 338-4545. Contact the office directly to confirm availability and scheduling.
NPI registry
What is Dr. Ballonoff's NPI number?
Dr. Ballonoff's National Provider Identifier is 1689720260. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Ballonoff train?
Dr. Ballonoff attended University of Colorado School of Medicine, Denver, graduating in 2003. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ballonoff been practicing?
Dr. Ballonoff has 23 years experience. Calculated from a graduation year of 2003, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Ballonoff perform?
According to Medicare billing data, Dr. Ballonoff performs imaging including calculation of radiation therapy dose and complex radiation therapy planning, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ballonoff confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ballonoff. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.