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

Individual provider Clinical Psychologist · NPI 1962755157

MS. Lillian De Petrillo, PHD is a Clinical Psychologist in Washington, District of Columbia. Practices as a sole proprietor and works from 2 locations. Licensed in District of Columbia.

Licensed in
DC
In the registry since
2012
What do these letters mean?
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

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Practice location Address checks out

1729 21st St NW
Washington, DC 20009-1101
Phone: (202) 234-0903
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 4719 Hampden Ln, Bethesda, MD 20814-3074 — (301) 656-4600

Specialties & licences

Clinical Psychologist (primary) Taxonomy 103TC0700X · Licence PSY1000892 (DC)

Record details

NPI number1962755157
Entity typeIndividual (Type 1)
GenderFemale
Credentials PHD
Sole proprietorYes
NPI enumeratedOctober 25, 2012
Last updated in NPPESJanuary 15, 2019

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