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

Diana Castellon, LMSW

Individual provider Social Worker · NPI 1003585944

Diana Castellon, LMSW is a Social Worker in Olney, Maryland. Licensed in Maryland. Registered with an NPI since 2021.

Licensed in
MD
In the registry since
2021
What do these letters mean?
LMSW — Licensed Master Social Worker
A master's-level social worker, usually practising under supervision.

See every abbreviation used in this directory →

Practice location Address checks out

17904 Georgia Ave Ste 200
Olney, MD 20832-2277
Phone: (240) 304-3327
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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 20544 (MD)

Record details

NPI number1003585944
Entity typeIndividual (Type 1)
GenderFemale
Credentials LMSW
Sole proprietorNo
NPI enumeratedSeptember 13, 2021
Last updated in NPPESSeptember 13, 2021
Certification dateSeptember 13, 2021

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