John Jiwoong Ryu, MD
John Jiwoong Ryu is a Anesthesiology Physician provider (Anesthesiology) practicing in Walnut Creek, CA, registered in the NPPES registry with NPI 1497783021 since 2006. The credential MD stands for Doctor of Medicine.
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1497783021 |
|---|---|
| Entity type | Individual (Type 1) |
| Name | John Jiwoong Ryu |
| Credential | MD |
| Sex | Male |
| Practice address | 1601 YGNACIO VALLEY RD, Walnut Creek, CA, 94598 |
| Phone | 9259393000 |
| Fax | 9259475286 |
| Enumeration date | 2006-06-30 |
| Last updated in NPPES | 2007-07-08 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 207L00000X | Anesthesiology Physician | Primary | A51686 | CA |
MD — Doctor of Medicine: A physician who completed medical school (allopathic medicine), residency training, and state licensure. About the MD credential
Other identifiers
| Identifier | Type | State | Issuer |
|---|---|---|---|
| 00A516860 | Medicaid | CA | — |
Copy-ready billing details
Provider: John Ryu, MD NPI: 1497783021 Taxonomy: 207L00000X (Anesthesiology Physician) Address: 1601 YGNACIO VALLEY RD, Walnut Creek, CA, 94598
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1316932965 | Eric Buadu | Individual | Critical Care Medicine (Internal Medicine) Physician | Walnut Creek, CA |
| 1053307454 | Sierra Surgicenter | Organization | Ambulatory Surgical Clinic/Center | Walnut Creek, CA |
| 1780648766 | Molly Honegger | Individual | Diagnostic Radiology Physician | Walnut Creek, CA |
| 1982660080 | Stacie Bennett | Individual | Neonatal-Perinatal Medicine Physician | Walnut Creek, CA |
| 1619934692 | Jennifer Levy | Individual | Neonatal-Perinatal Medicine Physician | Walnut Creek, CA |
| 1235184110 | John Muir Magnetic Imaging Center | Organization | Diagnostic Radiology Physician | Walnut Creek, CA |
| 1073551057 | Kirkman Beckwith | Individual | Anesthesiology Physician | Walnut Creek, CA |
| 1255379624 | Radhika Annadata | Individual | Anesthesiology Physician | Walnut Creek, CA |
Verify this record
Cross-check NPI 1497783021 against the authoritative CMS record: view John Jiwoong Ryu on the official NPPES registry .
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes — even if the provider moves or changes specialty. Read the full guide or validate an NPI number.
Frequently asked questions
Where does John Ryu practice?
What is the NPI number for John Ryu?
Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2007-07-08.