Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Mark O'Connell, LCSW, LLC

Organization Clinical Social Worker · NPI 1942575931

Mark O'Connell, LCSW, LLC provides Clinical Social Worker services in New York, New York. Licensed in New York. Registered with an NPI since 2012.

Licensed in
NY
In the registry since
2012
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

304 Park Ave S Ste 1106
New York, NY 10010-4301 Not confirmed with CMS for 14 years — call before visiting
Phone: (212) 252-5195
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 079175-1 (NY)

Record details

NPI number1942575931
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark O'Connell — President · (212) 252-5195
NPI enumeratedMarch 9, 2012
Last updated in NPPESMarch 9, 2012
Mailing address304 Park Ave S, Suite 1106, New York, NY 10010-4301

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