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DARLENE RENEE MACK LCSW-C
NPI 1821408253
Social Worker - Clinical in Fairfax, VA

Active since May 07, 2014
8221 WILLOW OAKS CORPORATE DR STE 4-420, FAIRFAX, VA 22031(703) 289-7560(703) 204-9001 Get Directions Write a Review

NPPES record last updated: February 11, 2021. Verified against the NPPES registry weekly; last sync: July 26, 2026.

About Darlene Renee Mack Lcsw-c NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DARLENE RENEE MACK LCSW-C (NPI 1821408253) is an individual clinical provider in Fairfax, Virginia, licensed in Virginia (0904003321) and active in the NPI registry since May 2014. She maintains a secondary practice location in Gaithersburg.

NPPES Registry Identity

NPI1821408253
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameDARLENE RENEE MACKCredential: LCSW-C
Location Address8221 WILLOW OAKS CORPORATE DR STE 4-420Fairfax, VA 22031-4512
Mailing Address8221 Willow Oaks Corporate Dr Ste 4-420Fairfax, VA 22031-4512 · (703) 289-7560 · Fax (703) 204-9001
Phone(703) 289-7560
Fax(703) 204-9001
Sole ProprietorNo
Enumeration DateMay 7, 2014
Last NPPES UpdateFebruary 11, 2021
NPPES CertifiedFebruary 11, 2021
✔ NPI 1821408253 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers
Taxonomy Code1041C0700X
Licenses✔ Licensed in VA · 0904003321✔ Licensed in MD · 10340
Definition
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.
8221 WILLOW OAKS CORPORATE DR STE 4-420, Fairfax, VA 22031
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Secondary Practice Location 1

Location 1610 Professional DR, Suite 255Gaithersburg, MD 20879 · Phone (240) 683-6202 · Fax (240) 683-6203

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

ERICA ENGLEFIELD
Counselor (Professional)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7599
JULIA CHERNYY LCSW
Social Worker (Clinical)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7599
MIKAMI PUCHON LCSW
Social Worker (Clinical)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7560
SUSAN ALLEN RCSWI
Social Worker (Clinical)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7560
MARCIE LEIGH PERKINS LCSW, LCPC
Social Worker (Clinical)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7560
NATHAN LEE PILGRIM DO, MPH
Psychiatry & Neurology (Psychiatry)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7560
HAMZA MOHAMMAD-AMIN
Psychiatry & Neurology (Psychiatry)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (703) 289-7599
KATHRYN O LEWIS MS, LPC
Counselor (Professional)
8221 WILLOW OAKS CORPORATE DR STE 4-420
FAIRFAX, VA 22031
Fairfax County (571) 623-3500

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Darlene Mack's NPI number?

The NPI number for Darlene Mack is 1821408253. It was assigned to this individual provider in the NPPES registry on May 7, 2014.

Where is Darlene Mack located?

Darlene Mack practices at 8221 Willow Oaks Corporate Dr Ste 4-420, Fairfax, VA 22031. The listed phone number is (703) 289-7560.

What is Darlene Mack's specialty?

The primary specialty registered for this NPI is Social Worker, specializing in Clinical, with taxonomy code 1041C0700X.

When was this NPI record last updated?

The NPPES record for Darlene Mack was last updated on February 11, 2021, 5 years ago. NPI Profile syncs with the weekly NPPES data releases published by CMS; the most recent full sync was completed on July 26, 2026. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.