Physician Profile
Sean S. Szeja, M.D.
Unclaimed ProfileAbout Dr. Szeja
Sean S. Szeja, M.D. practices radiation oncology in Upland, CA. Sean is a 2013 graduate of University of Arizona College of Medicine. According to Medicare claims data, Sean cared for 692 Medicare patients across 2,120 services. The services billed most often include ct guidance for insertion of radiation therapy fields, radiation treatment management, 5 treatment sessions, and calculation of radiation therapy dose.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it — free, and no identity document with a practice or institutional email.
Education & Training
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
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
- (909) 949-2242
- Email not available
Practice Locations
1100 SAN BERNARDINO ROAD SUITE 1100
Upland, CA 91786
7777 Milliken Ave Ste 110
Rancho Cucamonga, CA 91730
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
Most searched conditions
- Brain tumors
- Breast cancer
- Prostate cancer
Benign condition
- Dupuytren's contracture
- Keloid scars
Blood and lymph cancer
- Lymphoma
Bone cancer
- Primary Bone Cancer
Brain tumors
- Acoustic Neuroma
- Brain Tumor Symptoms
- Pituitary Tumor
Cancer emergencies
- Blocked Chest Vein
- Spinal Cord Compression From Tumor
Chest cancer
- Mesothelioma
- Thymus tumor
Endocrine cancer
- Thyroid cancer
Eye cancer
- Melanoma of the eye
Eye conditions
- Thyroid eye disease
Foot conditions
- Plantar Fibroma
Gastrointestinal cancer
- Anal cancer
- Bile duct cancer
- Colon cancer
- Esophageal cancer
- Gallbladder cancer
- Liver cancer
- Pancreatic cancer
- Stomach cancer
Gynecologic cancer
- Cervical cancer
- Endometrial cancer
- Ovarian cancer
- Vaginal Cancer
- Vulvar cancer
Head & neck cancer
- Nose and Sinus Cancer
- Parotid gland tumor
Head and neck cancer
- Head and neck cancer
- Laryngeal cancer
- Oral cavity cancer
Metastatic cancer
- Cancer spread to bones
- Cancer spread to spine
- Severe back pain
Neurologic condition
- Trigeminal neuralgia
Orthopedic conditions
- Abnormal Bone Growth After Surgery
Sarcoma
- Soft-tissue sarcoma
Skin cancer
- Skin cancer
Thoracic cancer
- Lung cancer
Urologic cancer
- Bladder cancer
- Kidney cancer
- Penile Cancer
- Testicular cancer
Vascular conditions
- Brain Vascular Malformation
Procedures & services
Most searched procedures
- Brachytherapy
- CyberKnife
- Gamma Knife
- Proton therapy
- Radiation therapy
Advanced radiation
- MRI-Guided Radiation Therapy
Benign treatment
- Keloid scar radiation
Brain radiation
- Whole Brain Radiation
Cancer treatment
- Post-Surgery Radiation Therapy
- Pre-Surgery Radiation Therapy
Central nervous system
- Brain and Spinal Cord Radiation
Consultation
- Cancer radiation second opinion
- Radiation oncology consultation
External radiation
- Electron beam therapy
- Image-guided radiation (IGRT)
- IMRT (Targeted intensity radiation)
- RapidArc / VMAT radiation
- Total body irradiation (TBI)
Eye cancer treatment
- Eye Plaque Radiation Therapy
Follow-up care
- Radiation skin care and follow-up visit
Heart treatments
- Heart Arrhythmia Radiation Therapy
Internal radiation
- High-Dose Rate (HDR) Radiation Implants
Pain and symptom relief
- Palliative radiation for bone pain
Particle therapy
- Heavy Ion Radiation 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 Radioactive Seed Implants
Prostate protection
- SpaceOAR Hydrogel Injection
Radiation therapy
- Radiation Boost
Skin cancer treatment
- Superficial Radiation Therapy (SRT)
Skin lymphoma treatment
- Total Skin Electron Radiation
Specialized radiation
- Heat therapy for cancer (Hyperthermia)
- Intraoperative radiation (IORT)
Targeted isotopes
- Pluvicto infusion
- Radioactive Iodine Treatment
- Xofigo injection
- Y90 radioembolization
Targeted radiation drugs
- Lutathera Infusion
Treatment planning
- 4D CT Motion Scan
- Breathing-synchronized radiation (Respiratory gating)
- CT simulation scan
- Custom radiation mask fitting
- Gold marker placement (Fiducials)
- MRI Simulation Scan
- PET-CT Simulation Scan
- Radiation Therapy Alignment Tattoos
Procedures Most Often Billed to Medicare
2,120 services · 692 patients · 18 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Ct guidance for insertion of radiation therapy fields | Imaging | 77014 |
882 | More often than most peers in Radiation Oncology |
| Radiation treatment management, 5 treatment sessions | Imaging | 77427 |
241 | More often than most peers in Radiation Oncology |
| Calculation of radiation therapy dose | Imaging | 77300 |
223 | As often as other peers in Radiation Oncology |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
124 | As often as other peers in Radiation Oncology |
| Complex radiation therapy planning | Imaging | 77263 |
75 | More often than most peers in Radiation Oncology |
| Design and construction of radiation treatment device for high precision radiation therapy | Imaging | 77338 |
65 | More often than most peers in Radiation Oncology |
| High precision radiation therapy planning | Imaging | 77301 |
51 | More often than most peers in Radiation Oncology |
| Obtaining data needed to develop the optimal radiation treatment, 1 treatment area | Imaging | 77280 |
21 | Less often than most peers in Radiation Oncology |
| Obtaining data needed to develop the optimal radiation treatment, 3 or more treatment areas or any number of treatment areas where special treatment is involved | Imaging | 77290 |
20 | Less often than most peers in Radiation Oncology |
| 3d radiation therapy planning | Imaging | 77295 |
18 | 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.
Other radiation oncologists at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 8
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.
More connections — 24 related providers in 3 groups
Trained at University of Arizona College of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 2013 at University of Arizona College of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Ct guidance for insertion of radiation therapy fields 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Sean S. Szeja's specialty?
Sean S. Szeja is a radiation oncologist in Upland, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Radiation Oncology”.
NPI registry
Where can I find Sean S. Szeja?
Sean S. Szeja is listed at 1100 San Bernardino Road Suite 1100, Upland, CA 91786. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Sean S. Szeja?
The number on file is (909) 949-2242. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Sean S. Szeja's NPI number?
Sean S. Szeja's National Provider Identifier is 1023351822. 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
What is Sean S. Szeja's education?
Sean S. Szeja attended University of Arizona College of Medicine, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Sean S. Szeja been practicing?
Sean S. Szeja has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What is Sean S. Szeja known for?
According to Medicare billing data, Sean S. Szeja performs imaging including ct guidance for insertion of radiation therapy fields and radiation treatment management, 5 treatment sessions, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Sean S. Szeja confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Sean S. Szeja. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.