Sio Tong
NPI 1891813762 · Clinical Social Worker · San Mateo, CA
Enrolled with Medicare as Practitioner - Clinical Social Worker · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Sio Tong is a Clinical Social Worker provider in San Mateo, CA (NPI 1891813762).
Provider details
- NPI number
- 1891813762
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- LCS26278 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-27
- Last updated
- 2010-08-05
Frequently asked questions
- What is Sio Tong's NPI number?
- Sio Tong's National Provider Identifier (NPI) is 1891813762, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sio Tong's specialty?
- Sio Tong is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Sio Tong located?
- Sio Tong's practice location on file with NPPES is 1950 Alameda De Las Pulgas, San Mateo, CA 94403-1222.
- What is Sio Tong's phone number?
- The practice phone number listed in the NPPES registry for Sio Tong is (650) 573-3686.
- Does Sio Tong accept Medicare?
- Sio Tong is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Sio Tong's NPI active?
- Yes — Sio Tong's NPI (1891813762) is active in the NPPES registry as of the last update on 2010-08-05.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.