IndividualActive
Jennifer Day
NPI 1578214524 · Speech-Language Pathologist · Hayward, CA
Jennifer Day is a Speech-Language Pathologist provider in Hayward, CA (NPI 1578214524).
Provider details
- NPI number
- 1578214524
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- SP31051 (CA)
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
Established profile(61/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
4 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
1638 B St
Hayward, CA 94541-3020
Phone: (510) 250-9199
Street-level locationGet directions
Mailing address
35003 Lilac Loop
Union City, CA 94587-5256
Registry dates
- Enumerated
- 2022-01-11
- Last updated
- 2022-01-11
- Certified
- 2022-01-11
Frequently asked questions
- What is Jennifer Day's NPI number?
- Jennifer Day's National Provider Identifier (NPI) is 1578214524, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jennifer Day's specialty?
- Jennifer Day is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Jennifer Day located?
- Jennifer Day's practice location on file with NPPES is 1638 B St, Hayward, CA 94541-3020.
- What is Jennifer Day's phone number?
- The practice phone number listed in the NPPES registry for Jennifer Day is (510) 250-9199.
- Is Jennifer Day's NPI active?
- Yes — Jennifer Day's NPI (1578214524) is active in the NPPES registry as of the last update on 2022-01-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.