Physician Profile
Stephen In-Sun Ryu, MD
Unclaimed ProfileAbout Dr. Ryu
Stephen In-Sun Ryu, MD practices neurosurgery in Stanford, CA. Stephen is a 1999 graduate of University of California, San Diego School of Medicine. Stephen is also listed as specializing in neurological surgery. Medicare claims data shows Stephen provided 841 services to 731 patients.
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
Source: NPPES NPI Registry
Contact Information
- (650) 723-4000
- Email not available
Practice Locations
300 PASTEUR DR
Stanford, CA 94305
Conditions Commonly Evaluated or Treated
Within Neurological Surgery 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
Procedures & services
Most searched procedures
Procedures Most Often Billed to Medicare
841 services · 731 patients · 13 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Insertion of cage or mesh device to spine bone and disc space during spine fusion | Procedure | 22853 |
44 |
| Partial removal of spine bone with release of lower spinal cord or nerves and/or removal of disc | Procedure | 63030 |
27 |
| Partial removal of spine bone with release of spinal cord and/or nerves, each additional segment | Procedure | 63048 |
24 |
| Placement of stabilizing device to back of 1 spine bone in neck | Procedure | 22840 |
21 |
| Fusion of spine in lower back with partial removal of spine bone and disc | Procedure | 22633 |
21 |
| Partial removal of bone of single segment of spine in lower back with release of spinal cord and/or nerves during fusion of spine in lower back | Procedure | 63052 |
19 |
| Placement of stabilizing device to front, 2-3 spine bone segments | Procedure | 22845 |
13 |
| Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment | Procedure | 63047 |
11 |
| Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more | Office visit | 99213 |
291 |
| New patient office or other outpatient visit with moderate level of medical decision making, if using time, 45 minutes or more | Office visit | 99204 |
176 |
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 neurosurgery specialists in Stanford 8
Same specialty, same city.
Trained at University of California, San Diego 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 1999 at University of California, San Diego School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Insertion of cage or mesh device to spine bone and disc space during spine fusion 8
Providers in CA who bill this service to Medicare most often.
Common questions
What does Dr. Ryu specialize in?
Dr. Ryu is a neurosurgery in Stanford, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “NEUROSURGERY”.
NPI registry
Where is Dr. Ryu located?
Dr. Ryu 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. Ryu'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 the NPI for Dr. Ryu?
Dr. Ryu's National Provider Identifier is 1134153505. 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. Ryu go to medical school?
Dr. Ryu attended University of California, San Diego School of Medicine, graduating in 1999. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Dr. Ryu have?
Dr. Ryu has 27 years experience. Calculated from a graduation year of 1999, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Ryu do most often?
According to Medicare billing data, Dr. Ryu performs procedures including insertion of cage or mesh device to spine bone and disc space during spine fusion, partial removal of spine bone with release of lower spinal cord or nerves and/or removal of disc and partial removal of spine bone with release of spinal cord and/or nerves, each additional segment, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Dr. Ryu's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ryu. 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.