What is Kostas Mandelos's NPI number?

Kostas Mandelos's National Provider Identifier (NPI) is 1598625824, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is Kostas Mandelos's specialty?

Kostas Mandelos is listed in the NPPES registry with a primary specialty of Social Worker (Behavioral Health & Social Service Providers).

Where is Kostas Mandelos located?

Kostas Mandelos's practice location on file with NPPES is 3635 Bell Blvd Ste 203, Bayside, NY 11361-2097.

What is Kostas Mandelos's phone number?

The practice phone number listed in the NPPES registry for Kostas Mandelos is (718) 504-9256.

Is Kostas Mandelos's NPI active?

Yes — Kostas Mandelos's NPI (1598625824) is active in the NPPES registry as of the last update on 2025-11-18.

IndividualActive

Kostas Mandelos, LMSW

NPI 1598625824 · Social Worker · Bayside, NY

Kostas Mandelos, LMSW is a Social Worker provider in Bayside, NY (NPI 1598625824).

Provider details

NPI number: 1598625824
Entity type: Individual
Primary specialty: Social WorkerBehavioral Health & Social Service Providers
Credential: LMSW
Sex: Male
Sole proprietor: Yes
License: 127292 (NY)

Specialties & taxonomies

Social WorkerPrimary104100000XLicense 127292 (NY)
Behavioral Health & Social Service Providers

Profile Score

Established profile(53/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
Under 1 yr in 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

3635 Bell Blvd Ste 203

Bayside, NY 11361-2097

Phone: (718) 504-9256

Street-level locationGet directions

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Mailing address