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

McDermott-Sitzman Assoc , PC

Organization Psychologist · NPI 1265675383

McDermott-Sitzman Assoc , PC is a Psychologist in Washington, District of Columbia. Licensed in District of Columbia. Registered with an NPI since 2009.

Licensed in
DC
In the registry since
2009
What do these letters mean?
PC — Professional corporation
A form of business registration, not a clinical qualification.

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Practice location Address checks out

908 New Hampshire Ave NW Ste 303
Washington, DC 20037-2346
Phone: (202) 293-3044
Fax: (301) 229-1299
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychologist (primary) Taxonomy 103T00000X · Licence 1060 (DC)

Record details

NPI number1265675383
Entity typeOrganization (Type 2)
Organization subpartNo
Authorized official Cathi Sitzman — Psychologist/President · (202) 293-3044
NPI enumeratedApril 20, 2009
Last updated in NPPESApril 20, 2009
Mailing address908 New Hampshire Ave Nw, Suite 303, Washington, DC 20037-2346

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