Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Marcus E. John, LCSW-C

Individual provider Clinical Social Worker · NPI 1770306557

Marcus E. John, LCSW-C is a Clinical Social Worker in Gaithersburg, Maryland. Qualified in 2020, 6 years ago. Practices as a sole proprietor. Licensed in Maryland.

Years since qualifying
6
Licensed in
MD
In the registry since
2024
Specialties on file
2
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Practice location Address checks out

640 E Diamond Ave
Gaithersburg, MD 20877-5323
Phone: (202) 313-2397
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

School Social Worker (primary) Taxonomy 1041S0200X · Licence 26518 (MD)
Clinical Social Worker Taxonomy 1041C0700X · Licence 26518 (MD)

Record details

NPI number1770306557
Entity typeIndividual (Type 1)
GenderMale
Credentials LCSW-C
Sole proprietorYes
NPI enumeratedNovember 1, 2024
Last updated in NPPESJanuary 9, 2026
Certification dateJanuary 9, 2026
Mailing address12517 Brewster Ln, Bowie, MD 20715-2455

Medicare enrollment

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

Medicare specialtyCLINICAL SOCIAL WORKER
Medical schoolOTHER
Graduated 2020 (6 years in practice)
Accepts Medicare assignment Not indicated
Practice locations4 on file with Medicare

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