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

Mr. John Watt Cornelius, MSW

Individual provider Clinical Social Worker · NPI 1982740601

Mr. John Watt Cornelius, MSW is a Clinical Social Worker in Germantown, Maryland. Practices as a sole proprietor. Licensed in District of Columbia and Maryland.

Licensed in
DC, MD
In the registry since
2007
Specialties on file
2
What do these letters mean?
MSW — Master of Social Work
The graduate degree in social work.

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Practice location Address checks out

12900 Middlebrook Rd
Germantown, MD 20874
Phone: (301) 588-8881
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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 G11954 (MD)
Clinical Social Worker Taxonomy 1041C0700X · Licence LG50028254 (DC)

Record details

NPI number1982740601
Entity typeIndividual (Type 1)
GenderMale
Credentials MSW
Sole proprietorYes
NPI enumeratedJanuary 29, 2007
Last updated in NPPESJuly 9, 2007

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