Psychologist | Clinical Psychology

Ms. Lillian De Petrillo, PHD

1729 21st St Nw, Washington, District Of Columbia, 20009-1101

About Ms. Lillian De Petrillo

Ms. Lillian De Petrillo is a psychologist based in Washington, District Of Columbia who is specialized in Clinical Psychology. Active license number of Ms. Lillian De Petrillo is PSY1000892 for Clinical Psychology in District Of Columbia. Her current practice location is 1729 21st St Nw, Washington. Patients can contact her at 202-234-0903. Ms. Lillian De Petrillo, PHD, specializes in Clinical Psychology and her NPI number (Unique professional ID assigned by NPPES) is 1962755157.

Ms. Lillian De Petrillo is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Practice Information

Ms. Lillian De Petrillo's specialty, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Ms. Lillian De Petrillo
Specialization Clinical Psychology
Credentials PHD
Gender Female
Practice Address: 1729 21st St Nw,
Washington, DC - 20009-1101

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to healthcare providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

NPI Number1962755157
NPI Enumeration Date: 25 Oct, 2012
NPI Last Update On: 15 Jan, 2019

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialties in the same state or different states. Related medical licenses for Ms. Lillian De Petrillo are as mentioned below.

License NumberSpecializationStateStatus
PSY1000892Clinical Psychology District Of ColumbiaPrimary

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Ms. Lillian De Petrillo
1729 21st St Nw,
Washington, DC - 20009-1101
Phone: 202-234-0903

Book an Appointment with Ms. Lillian De Petrillo

To schedule an appointment, contact Ms. Lillian De Petrillo at 1729 21st St Nw, Washington, District Of Columbia or call the phone number listed below.

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Frequently Asked Questions

Below are some commonly asked questions about Ms. Lillian De Petrillo:

Ms. Lillian De Petrillo is a psychologist specializing in Clinical Psychology. She is a mental health professional with highly specialized training in the diagnosis and psychological treatment of mental, behavioral and emotional illnesses, including obsessive-compulsive disorder (OCD). Her main focus is on diagnosing and treating mental, emotional, and behavioral disorders. Some of the common disorders that she can treat are learning disabilities, substance abuse, depression, anxiety, and eating disorders.

Yes, Ms. Lillian De Petrillo is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.
*Availability may change. Please contact the office directly to ask about appointments.

Ms. Lillian De Petrillo practices at 1729 21st St Nw, Washington, District Of Columbia, 20009-1101.

To schedule an appointment with Ms. Lillian De Petrillo, please contact the office at 202-234-0903.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.