IndividualActive
Nicholas Castellanos
NPI 1528628559 · Behavior Analyst · San Mateo, CA
Nicholas Castellanos is a Behavior Analyst provider in San Mateo, CA (NPI 1528628559).
Provider details
- NPI number
- 1528628559
- Entity type
- Individual
- Primary specialty
- Behavior AnalystBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 1-23-69479 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Established profile(66/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
7 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
1720 S Amphlett Blvd Ste 110
San Mateo, CA 94402-2710
Phone: (650) 931-6300
Street-level locationGet directions
Mailing address
1720 S Amphlett Blvd Ste 110
San Mateo, CA 94402-2710
Registry dates
- Enumerated
- 2019-06-20
- Last updated
- 2023-11-13
- Certified
- 2023-11-13
Frequently asked questions
- What is Nicholas Castellanos's NPI number?
- Nicholas Castellanos's National Provider Identifier (NPI) is 1528628559, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Nicholas Castellanos's specialty?
- Nicholas Castellanos is listed in the NPPES registry with a primary specialty of Behavior Analyst (Behavioral Health & Social Service Providers).
- Where is Nicholas Castellanos located?
- Nicholas Castellanos's practice location on file with NPPES is 1720 S Amphlett Blvd Ste 110, San Mateo, CA 94402-2710.
- What is Nicholas Castellanos's phone number?
- The practice phone number listed in the NPPES registry for Nicholas Castellanos is (650) 931-6300.
- Is Nicholas Castellanos's NPI active?
- Yes — Nicholas Castellanos's NPI (1528628559) is active in the NPPES registry as of the last update on 2023-11-13.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.