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

Mary Elizabeth Karlan, LCSW

Individual provider Social Worker · NPI 1871976431

Mary Elizabeth Karlan, LCSW is a Clinical Social Worker in Old Greenwich, Connecticut. Qualified in 2012, 14 years ago. Practices as a sole proprietor and offers telehealth. Licensed in Connecticut and New York.

Years since qualifying
14
Licensed in
CT, NY
In the registry since
2015
Specialties on file
3
What do these letters mean?
LCSW — Licensed Clinical Social Worker
A social worker licensed to diagnose and treat mental health conditions independently.

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Practice location Address checks out

177 Sound Beach Ave Ste 6
Old Greenwich, CT 06870-1740
Phone: (203) 493-0937
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Social Worker (primary) Taxonomy 104100000X · Licence 001369 (CT)
Social Worker Taxonomy 104100000X · Licence 088338-1 (NY)
Clinical Social Worker Taxonomy 1041C0700X · Licence 121299

Record details

NPI number1871976431
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW
Sole proprietorYes
NPI enumeratedJuly 1, 2015
Last updated in NPPESOctober 22, 2020
Certification dateOctober 22, 2020

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2012 (14 years in practice)
Accepts Medicare assignment Not indicated
TelehealthOffers telehealth services
Practice locations3 on file with Medicare

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