Physician Profile
Unclaimed ProfileAbout CHAO
Ryan Tay Chao, MD is a healthcare provider in Stanford, CA specialising in diagnostic radiology. Ryan is also listed as specialising in radiation oncology and vascular & interventional radiology.
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
Areas of Expertise
Common questions
What does Dr. Chao specialise in?
Dr. Chao is a diagnostic radiology in Stanford, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “DIAGNOSTIC RADIOLOGY”.
NPI registry
Where is Dr. Chao located?
Dr. Chao is listed at 300 PASTEUR DR, Stanford, CA 94305. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Chao's phone number?
The number on file is (650) 723-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Chao's NPI number?
Dr. Chao's National Provider Identifier is 1235471608. 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. Chao go to medical school?
Dr. Chao attended Other, graduating in 2013. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Chao been practising?
Dr. Chao has 13 years experience. Calculated from a graduation year of 2013, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Chao do most often?
According to Medicare billing data, Dr. Chao performs procedures including drainage of fluid from abdominal cavity using imaging guidance and insertion of central venous tube with port; reads or performs imaging such as x-ray of chest, 1 view and x-ray of chest, 2 views; provides treatments such as ultrasound study of one arm or leg veins with compression and maneuvers and use of a drug to induce depression of consciousness by physician performing a procedure , initial 15 minutes. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Chao confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Chao. If this is you, claiming it is free.
Guide.md
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
Procedures Most Often Billed to Medicare
2,162 services · 1,879 patients · 25 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Drainage of fluid from abdominal cavity using imaging guidance | Procedure | 49083 |
58 |
| Insertion of central venous tube with port (5 years or older) | Procedure | 36561 |
24 |
| X-ray of chest, 1 view | Imaging | 71045 |
839 |
| X-ray of chest, 2 views | Imaging | 71046 |
123 |
| Ct scan of abdomen and pelvis with contrast | Imaging | 74177 |
110 |
| X-ray of knee, 1-2 views | Imaging | 73560 |
81 |
| X-ray of abdomen, 1 view | Imaging | 74018 |
70 |
| Ct scan of abdomen and pelvis without contrast | Imaging | 74176 |
69 |
| Ct scan of blood vessels of chest with contrast | Imaging | 71275 |
66 |
| X-ray of knee, 3 views | Imaging | 73562 |
60 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
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Claim this profileRelated providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other diagnostic radiology specialists at this location 2
Same specialty, same street address — most likely the same department or group.
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 diagnostic radiology specialists in Stanford 6
Same specialty, same city.
More connections — 23 related providers in 3 groups
Trained at Other 7
Other providers in the same specialty who trained at the same institution.
Class of 2013 at Other 8
Providers who graduated from the same medical school in the same year.
Also performs Drainage of fluid from abdominal cavity using imaging guidance 8
Providers in CA who bill this service to Medicare most often.
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.