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Edit this profileWhere to find James Y. Chao, M.D.
- Mountain View location main office
525 South Dr Ste 105, Mountain View, CA 94040 - Stanford location
300 Pasteur Dr, Stanford, CA 94305
About Dr. Chao
James Y. Chao, M.D. is a healthcare provider in Mountain View, CA specializing in cardiovascular disease. James trained at Oregon Health Sciences University School of Medicine, graduating in 2009. James is also listed as specializing in internal medicine and interventional cardiology. According to Medicare claims data, James cared for 896 Medicare patients across 1,171 services. The services billed most often include established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more, routine electrocardiogram (ecg) using at least 12 leads with interpretation and report, and ultrasound of heart with color-depicted blood flow, rate, direction and valve function. This provider record is associated with NPI 1144455940.
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
- (650) 962-0242
- Email not available
Practice Locations
525 SOUTH DR STE 105
Mountain View, CA 94040
300 Pasteur Dr
Stanford, CA 94305
Conditions Commonly Evaluated or Treated
Within Cardiovascular Disease 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
Coronary and ischemic heart disease
Heart failure and cardiomyopathy
Heart rhythm
Symptoms and functional disorders
Valve and structural heart
Vascular and risk factors
Artery & vascular
Heart inflammation
Heart muscle
Heart valves
Vascular disease
Procedures & services
Most searched procedures
Office and noninvasive testing
Advanced imaging
Consultations
Diagnostic testing
Diagnostics
Heart devices
- Biventricular Pacemaker (Cardiac Resynchronization Therapy)
- Implantable Loop Recorder (Cardiac Monitor Implant)
Heart imaging
Heart procedures
Heart rhythm procedures
Imaging
Implants
Recovery & rehabilitation
Vascular imaging
Procedures Most Often Billed to Medicare
1,171 services · 896 patients · 6 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report | Treatment | 93000 |
247 | As often as other peers in Cardiovascular Disease |
| Ultrasound of heart with color-depicted blood flow, rate, direction and valve function | Treatment | 93306 |
244 | As often as other peers in Cardiovascular Disease |
| Ultrasound of both sides of head and neck blood flow | Treatment | 93880 |
239 | More than most peers in Cardiovascular Disease |
| Ultrasound of heart with continuous electrocardiogram (ecg) during rest, exercise and/or drug induced stress with review and report | Treatment | 93351 |
83 | More often than most peers in Cardiovascular Disease |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
318 | As often as other peers in Cardiovascular Disease |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
40 | As often as other peers in Cardiovascular Disease |
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.
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 cardiologists in Mountain View 8
Same specialty, same city.
Trained at Oregon Health Sciences University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
More connections — 16 related providers in 2 groups
Class of 2009 at Oregon Health Sciences University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does James Y. Chao specialize in?
James Y. Chao is a cardiologist in Mountain View, CA. That is the designation recorded for this NPI in the federal registry, where it is listed as “Cardiovascular Disease”.
NPI registry
Where is James Y. Chao located?
James Y. Chao is listed at 525 South Dr Ste 105, Mountain View, CA 94040. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is James Y. Chao's phone number?
The number on file is (650) 962-0242. Contact the office directly to confirm availability and scheduling.
NPI registry
What is James Y. Chao's NPI number?
James Y. Chao's National Provider Identifier is 1144455940. 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 James Y. Chao train?
James Y. Chao attended Oregon Health Sciences University School of Medicine, graduating in 2009. This comes from the CMS National Downloadable File.
CMS public data
How long has James Y. Chao been practicing?
James Y. Chao has 17 years experience. Calculated from a graduation year of 2009, reported in the CMS National Downloadable File.
CMS public data
What does James Y. Chao do most often?
According to Medicare billing data, James Y. Chao provides treatments such as routine electrocardiogram using at least 12 leads with interpretation and report and ultrasound of heart with color-depicted blood flow, rate, direction and valve function, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has James Y. Chao confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by James Y. Chao. If this is you, claiming it is free.
Guide.md
Guide.md listings do not constitute medical advice or an endorsement.