Hillary Grennan, LCSW
Hillary Grennan is a Clinical Social Worker based in New Providence, NJ with over 18 years of clinical experience. Medicare-enrolled per CMS records and offers virtual telehealth visits.
Hillary Grennan, LCSW specializes in social work, serving patients in New Providence, NJ in group practice. With 18+ years of experience, she has been practicing in the New Providence area. A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two ...
Older · 451dNPPES updated 2025-02-26 · verify NPI on CMS · Verify license at New Jersey State Board of Medical Examiners
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Background & Specialty
Education, training, and specialty classification from CMS NPPES and Medicare records.
Board certified · Feb 25, 2025
Self-reported via NPPES
18 years in practice
Experienced
A social worker who holds a master's or doctoral degree in social work from an accredited school of social work in addition to at least two years of post-master's supervised experience in a clinical setting. The social worker must be licensed, certified, or registered at the clinical level in the jurisdiction of practice. A clinical social worker provides direct services, including interventions focused on interpersonal interactions, intrapsychic dynamics, and life management issues. Clinical social work services are based on bio-psychosocial perspectives. Services consist of assessment, diagnosis, treatment (including psychotherapy and counseling), client-centered advocacy, consultation, evaluation, and prevention of mental illness, emotional, or behavioral disturbances.
Taxonomy: 1041C0700X
Mailing address
56 Main St, Hackettstown, NJ 07840-1364
Differs from practice location
Virtual Social Work Care With Hillary Grennan
NPPES records indicate this provider offers telehealth services. Contact the office to confirm availability and scheduling.
Schedule a virtual visit with Hillary Grennan for follow-ups, medication reviews, and ongoing care — no travel to New Providence required. The office sends a secure video link before your appointment. Most visits take 15–30 minutes. Medicare enrolled per CMS records.
Frequently Asked Questions
Common questions about Hillary Grennan
Dr. Grennan is listed as active in the NPI registry with telehealth listed in New Providence, NJ. NPI status alone doesn't confirm open availability — call the office to confirm. Phone: (908) 277-8900.
Sourced from CMS NPPES · OIG LEIE. See Data Methodology.
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Medical Disclaimer: NPI Telehealth is a provider directory for informational purposes only. This page does not constitute medical advice, diagnosis, or treatment recommendations. Provider data is sourced from the CMS NPPES federal registry and public Medicare datasets. NPI Telehealth does not verify clinical qualifications beyond federal records. Data may not reflect real-time availability — always contact the provider's office directly to confirm details before seeking care.
Contact Hillary Grennan
Practice Location
890 Mountain Ave, New Providence, NJ 07974-1218
Mailing Address
56 Main St, Hackettstown, NJ 07840-1364
This is a provider directory. Contact the office directly to schedule appointments.
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