IndividualActive
Sonia Diaz
NPI 1649784745 · Speech-Language Pathologist · San Mateo, CA
Sonia Diaz is a Speech-Language Pathologist provider in San Mateo, CA (NPI 1649784745).
Provider details
- NPI number
- 1649784745
- Entity type
- Individual
- Primary specialty
- Speech-Language PathologistSpeech, Language and Hearing Service Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Speech, Language and Hearing Service Providers
Profile Score
Established profile(62/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
8 yrs in NPPES registry
- Profile completeness38% of score
83% 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
1104 S El Camino Real
San Mateo, CA 94402-2804
Phone: (415) 469-4988
Street-level locationGet directions
Mailing address
139 San Carlos Ave
Redwood City, CA 94061-3516
Registry dates
- Enumerated
- 2017-11-28
- Last updated
- 2017-11-28
Frequently asked questions
- What is Sonia Diaz's NPI number?
- Sonia Diaz's National Provider Identifier (NPI) is 1649784745, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Sonia Diaz's specialty?
- Sonia Diaz is listed in the NPPES registry with a primary specialty of Speech-Language Pathologist (Speech, Language and Hearing Service Providers).
- Where is Sonia Diaz located?
- Sonia Diaz's practice location on file with NPPES is 1104 S El Camino Real, San Mateo, CA 94402-2804.
- What is Sonia Diaz's phone number?
- The practice phone number listed in the NPPES registry for Sonia Diaz is (415) 469-4988.
- Is Sonia Diaz's NPI active?
- Yes — Sonia Diaz's NPI (1649784745) is active in the NPPES registry as of the last update on 2017-11-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.