Doctor profile · Federal record
Dr. John Ryu, MD
Anesthesiology Physician (CMS: Anesthesiology) · Walnut Creek, CA
- NPI 1497783021
- Accepts Medicare
- MIPS 58.0 / 100 · 2023
- 35 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1601 Ygnacio Valley RD
Walnut Creek, CA 945983122
(925) 939-3000
fax (925) 947-5286 - Mailing address
-
Po Box 7793
San Francisco, CA 941207793
Credentials & registration
- NPI registered
- June 2006 — 20 yrs on file
- Profile last updated
- July 8, 2007
- Year of graduation
- 1991 — 35 yrs since
- Specialty taxonomy
- 207L00000X — NUCC code
- State license (1)
- California #A51686
- Medicaid
- CA #00A516860
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1497783021. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
106
Distinct HCPCS
6
Medicare allowed
$22,211
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
00840 |
Anesthesia for other procedure on lower abdomen | 23 | 23 | $262 | |
00142 |
Anesthesia for lens surgery | 22 | 22 | $137 | |
00160 |
Anesthesia for other procedure on nose and sinuses | 19 | 19 | $311 | |
00731 |
Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope | 18 | 18 | $144 | |
00400 |
Anesthesia for other procedure on skin of arms, legs, and front body | 13 | 12 | $169 | |
01480 |
Anesthesia for other procedure on lower leg, ankle, and foot bones | 11 | 11 | $226 |
In context: peer comparison
Among 28 peers in Walnut Creek Anesthesiology Physician, average services per provider: 70. This provider delivers 1.5× the peer median.Frequently asked questions
What is Dr. John Ryu's medical specialty?
Dr. John Ryu practices Anesthesiology Physician in Walnut Creek, CA.
Where does Dr. John Ryu practice?
Dr. John Ryu practices at 1601 Ygnacio Valley RD, Walnut Creek, CA 945983122. Office phone: 9259393000.
What is Dr. John Ryu's NPI?
Dr. John Ryu's National Provider Identifier (NPI) is 1497783021, issued by NPPES.
Does Dr. John Ryu accept Medicare assignment?
Yes. Dr. John Ryu accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. John Ryu commonly perform?
Top Medicare-reported procedures in 2023: Anesthesia for other procedure on lower abdomen (HCPCS 00840); Anesthesia for lens surgery (HCPCS 00142); Anesthesia for other procedure on nose and sinuses (HCPCS 00160). Source: CMS Medicare Physician & Other Practitioners file.