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

Marvin Duncan, LCSW

Individual provider Clinical Social Worker · NPI 1609607498

Marvin Duncan, LCSW is a Clinical Social Worker in Canandaigua, New York. Qualified in 2019, 7 years ago. Practices with Ontario County, a 10-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
7
Licensed in
NY
In the registry since
2024
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

3019 County Complex Dr
Canandaigua, NY 14424-9505
Phone: (585) 396-4363
Fax: (585) 396-4993
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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 099380 (NY)

Record details

NPI number1609607498
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW
Sole proprietorNo
NPI enumeratedAugust 12, 2024
Last updated in NPPESDecember 30, 2025
Certification dateDecember 30, 2025
Mailing address3019 County Complex Dr, Canandaigua, NY 14424-9505

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2019 (7 years in practice)
Group practice Ontario County — 10 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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