Doctor profile · Federal record
Dr. Sidney Chan, MD
Diagnostic Radiology Physician (CMS: Diagnostic Radiology) · Walnut Creek, CA
- NPI 1427136522
- Accepts Medicare
- 30 yrs in practice
- Male
- Group practice
- No sanctions
Practice & contact
- Primary practice
-
1425 S Main St
Walnut Creek, CA 945965318
(925) 295-4000 - Mailing address
-
1800 Harrison St Fl 7
Oakland, CA 946123466
Credentials & registration
- NPI registered
- November 2006 — 20 yrs on file
- Profile last updated
- December 17, 2021
- Year of graduation
- 1996 — 30 yrs since
- Specialty taxonomy
- 2085R0202X — NUCC code
- State license (1)
- California #A65087
- Medicaid
- CA #00A650870
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1427136522. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
165
Distinct HCPCS
6
Medicare allowed
$6,267
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
71045 |
X-ray of chest, 1 view | 53 | 49 | $10 | |
70450 |
Ct scan head or brain without contrast | 33 | 33 | $45 | |
73630 |
X-ray of foot, minimum of 3 views | 30 | 12 | $23 | |
74177 |
Ct scan of abdomen and pelvis with contrast | 24 | 24 | $95 | |
74176 |
Ct scan of abdomen and pelvis without contrast | 13 | 13 | $91 | |
71046 |
X-ray of chest, 2 views | 12 | 12 | $12 |
In context: peer comparison
Among 33 peers in this city , average services per provider: 176. This provider delivers 0.9× the peer median.Hospital affiliations
Frequently asked questions
What is Dr. Sidney Chan's medical specialty?
Dr. Sidney Chan practices Diagnostic Radiology Physician in Walnut Creek, CA.
Where does Dr. Sidney Chan practice?
Dr. Sidney Chan practices at 1425 S Main St, Walnut Creek, CA 945965318. Office phone: 9252954000.
What is Dr. Sidney Chan's NPI?
Dr. Sidney Chan's National Provider Identifier (NPI) is 1427136522, issued by NPPES.
Does Dr. Sidney Chan accept Medicare assignment?
Yes. Dr. Sidney Chan accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Sidney Chan commonly perform?
Top Medicare-reported procedures in 2023: X-ray of chest, 1 view (HCPCS 71045); Ct scan head or brain without contrast (HCPCS 70450); X-ray of foot, minimum of 3 views (HCPCS 73630). Source: CMS Medicare Physician & Other Practitioners file.