William Castilla, MD
NPI 1235283938 · Pediatrics Physician · Passaic, NJ
William Castilla, MD is a Pediatrics Physician provider in Passaic, NJ (NPI 1235283938).
Provider details
- NPI number
- 1235283938
- Entity type
- Individual
- Primary specialty
- Pediatrics PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 25MA02465100 (NJ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
- 2007-01-22
- Last updated
- 2011-01-19
Frequently asked questions
- What is William Castilla's NPI number?
- William Castilla's National Provider Identifier (NPI) is 1235283938, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Castilla's specialty?
- William Castilla is listed in the NPPES registry with a primary specialty of Pediatrics Physician (Allopathic & Osteopathic Physicians).
- Where is William Castilla located?
- William Castilla's practice location on file with NPPES is 293 Passaic Street, Passaic, NJ 07055.
- What is William Castilla's phone number?
- The practice phone number listed in the NPPES registry for William Castilla is (973) 365-1377.
- Is William Castilla's NPI active?
- Yes — William Castilla's NPI (1235283938) is active in the NPPES registry as of the last update on 2011-01-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.