Physician Profile
Unclaimed ProfileAbout SUN
Ryan Ruey-En Sun, MD is a healthcare provider in Stanford, CA specialising in urology. Ryan trained at University of Toronto, Faculty of Medicine, graduating in 2017.
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 kind of doctor is Dr. Sun?
Dr. Sun is an urology in Stanford, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “UROLOGY”.
NPI registry
What is Dr. Sun's address?
Dr. Sun 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
How can I make an appointment with Dr. Sun?
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 the NPI for Dr. Sun?
Dr. Sun's National Provider Identifier is 1891430807. 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. Sun train?
Dr. Sun attended University of Toronto, Faculty of Medicine, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Sun have?
Dr. Sun has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What procedures does Dr. Sun perform?
According to Medicare billing data, Dr. Sun performs procedures including ultrasound measurement of bladder capacity after voiding, diagnostic exam of bladder and urethra using an endoscope and electronic assessment of bladder emptying; reads or performs imaging such as review by radiologist of urinary bladder image; provides treatments such as telephone medical discussion provided by nonphysician professional, 5-10 minutes, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Sun's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Sun. 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
857 services · 783 patients · 19 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Ultrasound measurement of bladder capacity after voiding | Procedure | 51798 |
86 |
| Diagnostic exam of bladder and urethra using an endoscope | Procedure | 52000 |
67 |
| Electronic assessment of bladder emptying | Procedure | 51741 |
42 |
| Non-needle measurement and recording of electrical activity of muscles at bladder and bowel openings | Procedure | 51784 |
35 |
| Complex measurement of pressure of urine flow in bladder with urethra pressure and voiding pressure studies | Procedure | 51729 |
35 |
| Insertion of device into abdomen with pressure and urine flow rate study | Procedure | 51797 |
32 |
| Crushing of stone of ureter with insertion of stent using an endoscope | Procedure | 52356 |
29 |
| Insertion of stent in ureter using an endoscope | Procedure | 52332 |
22 |
| Simple bladder irrigation and/or instillation | Procedure | 51700 |
11 |
| Review by radiologist of urinary bladder image | Imaging | 74430 |
32 |
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 urology specialists in Stanford 8
Same specialty, same city.
Trained at University of Toronto, Faculty of Medicine 3
Other providers in the same specialty who trained at the same institution.
More connections — 12 related providers in 2 groups
Class of 2017 at University of Toronto, Faculty of Medicine 4
Providers who graduated from the same medical school in the same year.
Also performs Ultrasound measurement of bladder capacity after voiding 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.