Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John Jiwoong Ryu, MD

Individual provider Anesthesiology Physician · NPI 1497783021

John Jiwoong Ryu, MD is an Anesthesiology in Walnut Creek, California. Graduated from Vanderbilt University School of Medicine in 1991, 35 years ago. Practices with Cep America - Anesthesia PC, a 850-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
35
Trained at
Vanderbilt University School of Medicine
Licensed in
CA
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1601 Ygnacio Valley Rd
Walnut Creek, CA 94598-3122
Phone: (925) 939-3000
Fax: (925) 947-5286
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anesthesiology Physician (primary) Taxonomy 207L00000X · Licence A51686 (CA)

Record details

NPI number1497783021
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 30, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyANESTHESIOLOGY
Medical schoolVANDERBILT UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Cep America - Anesthesia Pc — 850 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

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