Physician Profile
Clara Y. Choi, M.D., PhD
Unclaimed ProfileAbout Dr. Choi
Clara Y. Choi, M.D., PhD practices radiation oncology in San Mateo, CA. Clara is a 2002 graduate of University of Michigan Medical School. Medicare claims data shows Clara provided 335 services to 162 patients. The services billed most often include stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy, calculation of radiation therapy dose, and established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
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
- (650) 212-7387
- Email not available
Practice Locations
3020 MONTEREY ST
San Mateo, CA 94403
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
335 services · 162 patients · 7 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Calculation of radiation therapy dose | Imaging | 77300 |
80 | Less often than most peers in Radiation Oncology |
| Design and construction of complex radiation treatment device | Imaging | 77334 |
48 | Less often than most peers in Radiation Oncology |
| Complex radiation therapy planning | Imaging | 77263 |
25 | Less often than most peers in Radiation Oncology |
| 3d radiation therapy planning | Imaging | 77295 |
11 | Less often than most peers in Radiation Oncology |
| Stereoscopic x-ray guidance for localization of target volume for the delivery of radiation therapy | Billing code | G6002 |
86 | Less often than most peers in Radiation Oncology |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
70 | More often than most 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 |
15 | 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 in San Mateo 2
Same specialty, same city.
Trained at University of Michigan Medical School 8
Other providers in the same specialty who trained at the same institution.
Class of 2002 at University of Michigan Medical School 8
Providers who graduated from the same medical school in the same year.
More connections — 8 related providers in 1 group
Also performs Calculation of radiation therapy dose 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Clara Y. Choi, M.D. specialize in?
Clara Y. Choi, M.D. is a radiation oncologist in San Mateo, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Radiation Oncology”.
NPI registry
Where is Clara Y. Choi, M.D. located?
Clara Y. Choi, M.D. is listed at 3020 Monterey St, San Mateo, CA 94403. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Clara Y. Choi, M.D.'s phone number?
The number on file is (650) 212-7387. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Clara Y. Choi, M.D.?
Clara Y. Choi, M.D.'s National Provider Identifier is 1225236649. 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 Clara Y. Choi, M.D. train?
Clara Y. Choi, M.D. attended University of Michigan Medical School, graduating in 2002. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Clara Y. Choi, M.D. have?
Clara Y. Choi, M.D. has 24 years experience. Calculated from a graduation year of 2002, reported in the CMS National Downloadable File.
CMS public data
What does Clara Y. Choi, M.D. do most often?
According to Medicare billing data, Clara Y. Choi, M.D. performs imaging including calculation of radiation therapy dose and design and construction of complex radiation treatment device, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Clara Y. Choi, M.D.'s profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Clara Y. Choi, M.D.. 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.