Steven Iallonardo, MS
NPI 1457593543 · Intellectual & Developmental Disabilities Psychologist · New York, NY
Steven Iallonardo, MS is a Intellectual & Developmental Disabilities Psychologist provider in New York, NY (NPI 1457593543).
Provider details
- NPI number
- 1457593543
- Entity type
- Individual
- Primary specialty
- Intellectual & Developmental Disabilities PsychologistBehavioral Health & Social Service Providers
- Credential
- MS
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
17 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
Mailing address
Registry dates
- Enumerated
- 2009-04-03
- Last updated
- 2009-04-03
Frequently asked questions
- What is Steven Iallonardo's NPI number?
- Steven Iallonardo's National Provider Identifier (NPI) is 1457593543, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Steven Iallonardo's specialty?
- Steven Iallonardo is listed in the NPPES registry with a primary specialty of Intellectual & Developmental Disabilities Psychologist (Behavioral Health & Social Service Providers).
- Where is Steven Iallonardo located?
- Steven Iallonardo's practice location on file with NPPES is 460 W 34th St, New York, NY 10001-2320.
- What is Steven Iallonardo's phone number?
- The practice phone number listed in the NPPES registry for Steven Iallonardo is (212) 273-6527.
- Is Steven Iallonardo's NPI active?
- Yes — Steven Iallonardo's NPI (1457593543) is active in the NPPES registry as of the last update on 2009-04-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.