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

Mark Sullivan LLC

Organization Clinical Social Worker · NPI 1710470711

Mark Sullivan LLC is a Clinical Social Worker in Silver Spring, Maryland. Licensed in District of Columbia. Registered with an NPI since 2018.

Licensed in
DC
In the registry since
2018
What do these letters mean?
LLC — Limited liability company
A form of business registration, not a clinical qualification.

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Practice location Address checks out

8703 Milford Ave
Silver Spring, MD 20910-5030
Phone: (202) 264-0070
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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 LC50079401 (DC)

Record details

NPI number1710470711
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Mark Sullivan — Clinical Social Worker · (202) 264-0070
NPI enumeratedJune 13, 2018
Last updated in NPPESMarch 7, 2024
Certification dateMarch 7, 2024
Mailing address8703 Milford Ave, Silver Spring, MD 20910-5030

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