Diana Sy, RCDS
NPI 1710428164 · Sonography Specialist/Technologist Cardiovascular · Hayward, CA
Diana Sy, RCDS is a Sonography Specialist/Technologist Cardiovascular provider in Hayward, CA (NPI 1710428164).
Provider details
- NPI number
- 1710428164
- Entity type
- Individual
- Primary specialty
- Sonography Specialist/Technologist CardiovascularTechnologists, Technicians & Other Technical Service Providers
- Credential
- RCDS
- Sex
- Female
- Sole proprietor
- No
- License
- 148236 (CA)
Specialties & taxonomies
Technologists, Technicians & Other Technical Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
- 2017-03-18
- Last updated
- 2017-03-18
Frequently asked questions
- What is Diana Sy's NPI number?
- Diana Sy's National Provider Identifier (NPI) is 1710428164, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Sy's specialty?
- Diana Sy is listed in the NPPES registry with a primary specialty of Sonography Specialist/Technologist Cardiovascular (Technologists, Technicians & Other Technical Service Providers).
- Where is Diana Sy located?
- Diana Sy's practice location on file with NPPES is 722 Gleneagle Ave, Hayward, CA 94544-7208.
- What is Diana Sy's phone number?
- The practice phone number listed in the NPPES registry for Diana Sy is (510) 303-5810.
- Is Diana Sy's NPI active?
- Yes — Diana Sy's NPI (1710428164) is active in the NPPES registry as of the last update on 2017-03-18.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.