IndividualActive
Diana Tom
NPI 1598649774 · School Registered Nurse · Hayward, CA
Diana Tom is a School Registered Nurse provider in Hayward, CA (NPI 1598649774).
Provider details
- NPI number
- 1598649774
- Entity type
- Individual
- Primary specialty
- School Registered NurseNursing Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 95118486 (CA)
Specialties & taxonomies
Nursing Service Providers
Nursing Service Providers
Profile Score
Established profile(54/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
Under 1 yr in 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
313 W Winton Ave
Hayward, CA 94544-1136
Phone: (510) 670-1861
Street-level locationGet directions
Mailing address
313 W Winton Ave
Hayward, CA 94544-1136
Registry dates
- Enumerated
- 2025-08-01
- Last updated
- 2025-11-14
- Certified
- 2025-11-14
Frequently asked questions
- What is Diana Tom's NPI number?
- Diana Tom's National Provider Identifier (NPI) is 1598649774, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Diana Tom's specialty?
- Diana Tom is listed in the NPPES registry with a primary specialty of School Registered Nurse (Nursing Service Providers).
- Where is Diana Tom located?
- Diana Tom's practice location on file with NPPES is 313 W Winton Ave, Hayward, CA 94544-1136.
- What is Diana Tom's phone number?
- The practice phone number listed in the NPPES registry for Diana Tom is (510) 670-1861.
- Is Diana Tom's NPI active?
- Yes — Diana Tom's NPI (1598649774) is active in the NPPES registry as of the last update on 2025-11-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.