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

Mr. Mark Lewis O'Neill, LCSW-C

Individual provider Clinical Social Worker · NPI 1588653950

Mr. Mark Lewis O'Neill, LCSW-C is a Clinical Social Worker in Kingsville, Maryland. Licensed in Maryland. Registered with an NPI since 2005.

Licensed in
MD
In the registry since
2005

Practice location Address checks out

19 Elray Rd
Kingsville, MD 21087-1741
Phone: (410) 592-7517
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Clinical Social Worker (primary) Taxonomy 1041C0700X · Licence 00218 (MD)

Record details

NPI number1588653950
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW-C
Sole proprietorNo
NPI enumeratedOctober 19, 2005
Last updated in NPPESJuly 13, 2026