Doctor profile · Federal record
Dr. Stephen Sum, D.C.
Chiropractor (CMS: Chiropractic) · Castro Valley, CA
- NPI 1912055195
- Accepts Medicare
- 39 yrs in practice
- Male
- Solo practice
- No sanctions
Practice & contact
- Primary practice
-
20406 Redwood RD, D
Castro Valley, CA 945464317
(510) 538-1111
fax (510) 538-1040 - Mailing address
-
15520 Rockfield Blvd A200
Irvine, CA 926186705
Credentials & registration
- NPI registered
- January 2007 — 19 yrs on file
- Profile last updated
- October 23, 2015
- Year of graduation
- 1987 — 39 yrs since
- Specialty taxonomy
- 111N00000X — NUCC code
- State license (1)
- California #18971
Federal sanctions & exclusions
No sanctions, exclusions or revocations on file
Checked against OIG LEIE on NPI 1912055195. Last verified May 11, 2026.Medicare procedures · 2023
Top services delivered
Total services
155
Distinct HCPCS
1
Medicare allowed
$7,270
| HCPCS | Description | Services | Patients | Avg allowed | |
|---|---|---|---|---|---|
98941 |
Chiropractic manipulative treatment, 3-4 spinal regions | 155 | 18 | $47 |
In context: peer comparison
Among 3 peers in Castro Valley Chiropractor, average services per provider: 265. This provider delivers 0.6× the peer median.Frequently asked questions
What is Dr. Stephen Sum's medical specialty?
Dr. Stephen Sum practices Chiropractor in Castro Valley, CA.
Where does Dr. Stephen Sum practice?
Dr. Stephen Sum practices at 20406 Redwood RD, Castro Valley, CA 945464317. Office phone: 5105381111.
What is Dr. Stephen Sum's NPI?
Dr. Stephen Sum's National Provider Identifier (NPI) is 1912055195, issued by NPPES.
Does Dr. Stephen Sum accept Medicare assignment?
Yes. Dr. Stephen Sum accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Stephen Sum commonly perform?
Top Medicare-reported procedures in 2023: Chiropractic manipulative treatment, 3-4 spinal regions (HCPCS 98941). Source: CMS Medicare Physician & Other Practitioners file.