Dr. Ryan T. Chao, MD
Interventional Radiology (Vascular & Interventional Radiology Physician)
300 Pasteur Dr
Stanford, CA 94305
Who else practices at this address →
Santa Clara County includes mental health (13% of residents) shortage areas. About shortage areas
- Medicare participating
At a glance
- Years since graduation
- 13
- In the NPI registry since
- 2013
- Medicare patients seen, 2024
- 1,652
Licensed in California since 2014, according to the Medical Board of California. We show license dates only for the states that publish them in bulk; see which states do. For other states, check the state medical board.
The NPI date is when this clinician registered for a National Provider Identifier, the billing number used on health claims. It is not a license, graduation or board-certification date. What an NPI is
Education and training
- 2013Registered with an NPI (national billing number; not a license date)
Medicare’s Care Compare data doesn’t list this clinician’s medical school. Undergraduate school, residency, fellowship, licensing exams and board certification aren’t in public federal data. Board certification can be confirmed with the certifying board (ABMS member boards for MDs, AOA boards for DOs).
Specialties and state licenses
-
Vascular & Interventional Radiology Physician primary
CA license A131676 (first issued 2014; current) -
Diagnostic Radiology Physician
CA license A131676 (first issued 2014; current) -
Radiation Oncology Physician
CA license A131676 (first issued 2014; current)
As reported to the NPI registry. To confirm a license is current, check the state medical board.
Where they work
Hospitals
- Stanford Health Care Stanford, CA
- Stanford Health Care Tri-Valley Pleasanton, CA
Medical groups
- Stanford Health Care (3,122 clinicians)
Hospitals this clinician lists with Medicare, and groups they bill Medicare through (Care Compare). Affiliation doesn’t mean they see patients at every location.
Medicare patients and services
- Medicare patients, 2024
- 1,652
- Services billed
- 2,676
- Patients’ average age
- 76
| Service | Times | Patients |
|---|---|---|
| X-ray of chest, 1 view | 702 | 558 |
| X-ray of chest, 2 views | 120 | 120 |
| Ct scan of abdomen and pelvis with contrast | 104 | 103 |
| Ultrasound study of one arm or leg veins with compression and maneuvers | 92 | 89 |
| X-ray of abdomen, 1 view | 81 | 63 |
| Ct scan of abdomen and pelvis without contrast | 81 | 76 |
| Ct scan of blood vessels of chest with contrast | 70 | 67 |
| X-ray of knee, 1-2 views | 70 | 69 |
| Moderate sedation services provided by the same physician or other qualified health care professional performing a gastrointestinal endoscopic service that sedation supports, requiring the presence of an independent trained observer to assist in the monito | 60 | 54 |
| Ct scan of chest without contrast | 59 | 59 |
Medicare fee-for-service only. CMS leaves out services billed for fewer than 11 patients. These figures describe a practice’s Medicare work; they aren’t a measure of quality.