Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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MS. Kathryn Mertz, LCSW-R

Individual provider Clinical Social Worker · NPI 1073702247

MS. Kathryn Mertz, LCSW-R is a Clinical Social Worker in East Meadow, New York. Qualified in 2004, 22 years ago. Practices with North Shore-Lij Medical PC, a 6,350-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
22
Licensed in
NY
In the registry since
2007
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Practice location Address checks out

423 Sussex Rd
East Meadow, NY 11554-4227 Not confirmed with CMS for 13 years — call before visiting
Phone: (516) 695-6284
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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 075995 (NY)

Record details

NPI number1073702247
Entity typeIndividual (Type 1)
GenderFemale
Credentials LCSW-R
Sole proprietorYes
NPI enumeratedOctober 23, 2007
Last updated in NPPESJuly 3, 2013

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2004 (22 years in practice)
Group practice North Shore-Lij Medical Pc — 6350 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients13
Services billed 150 a service is one billed item, such as a visit, a test or a procedure
Average patient age77

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at North Shore-Lij Medical PC

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 6350 clinicians in the practice; 12 are shown here.

Other providers in East Meadow