Darlene Mack, LCSW-C
NPI 1821408253 · Clinical Social Worker · Fairfax, VA
Darlene Mack, LCSW-C is a Clinical Social Worker provider in Fairfax, VA (NPI 1821408253).
Provider details
- NPI number
- 1821408253
- Entity type
- Individual
- Primary specialty
- Clinical Social WorkerBehavioral Health & Social Service Providers
- Credential
- LCSW-C
- Sex
- Female
- Sole proprietor
- No
- License
- 10340 (MD)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
12 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
2 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (1)
- 610 Professional DrSuite 255Gaithersburg, MD 20879Phone: (240) 683-6202Fax: (240) 683-6203
Registry dates
- Enumerated
- 2014-05-07
- Last updated
- 2021-02-11
- Certified
- 2021-02-11
Frequently asked questions
- What is Darlene Mack's NPI number?
- Darlene Mack's National Provider Identifier (NPI) is 1821408253, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Darlene Mack's specialty?
- Darlene Mack is listed in the NPPES registry with a primary specialty of Clinical Social Worker (Behavioral Health & Social Service Providers).
- Where is Darlene Mack located?
- Darlene Mack's practice location on file with NPPES is 8221 Willow Oaks Corporate Dr Ste 4-420, Fairfax, VA 22031-4512.
- What is Darlene Mack's phone number?
- The practice phone number listed in the NPPES registry for Darlene Mack is (703) 289-7560.
- Is Darlene Mack's NPI active?
- Yes — Darlene Mack's NPI (1821408253) is active in the NPPES registry as of the last update on 2021-02-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.