ALEXANDRA MACK
NPI 1932648060
Social Worker - Clinical in Arlington, VA

Q: What is Alexandra Mack's NPI number?

The NPI number for Alexandra Mack is 1932648060. It was assigned to this individual provider in the NPPES registry on February 22, 2017.

Q: What is Alexandra Mack's specialty?

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

Q: When was this NPI record last updated?

The NPPES record for Alexandra Mack was last updated on June 9, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 16 months ago. 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.

Active since February 22, 2017PECOS Enrolled

2120 WASHINGTON BLVD, ARLINGTON, VA 22204(571) 214-9699 Get Directions Write a Review

NPPES record last updated: June 9, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Jun 9, 2025, May 22, 2022, Feb 22, 2017 (3 updates tracked since 2017).

On this page

About Alexandra Mack NPPES

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

ALEXANDRA MACK (NPI 1932648060) is an individual clinical provider in Arlington, Virginia, licensed in Virginia (0904016822) and active in the NPI registry since February 2017. She is enrolled in Medicare PECOS and maintains a secondary practice location in Alexandria.

NPPES Registry Identity

NPI1932648060

Entity TypeIndividualFemale

Primary Taxonomy1041C0700X

Provider Legal NameALEXANDRA MACK

Location Address2120 WASHINGTON BLVDArlington, VA 22204-5718

Mailing Address3001 Park Center Dr Apt 308Alexandria, VA 22302-1440

Phone(571) 214-9699

Sole ProprietorNo

Enumeration DateFebruary 22, 2017

Last NPPES UpdateJune 9, 20253 updates tracked since enumeration

NPPES CertifiedJune 9, 2025

✔ NPI 1932648060 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySocial Worker · ClinicalBehavioral Health & Social Service Providers

Taxonomy Code1041C0700X

License✔ Licensed in VA · 0904016822

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.

2120 WASHINGTON BLVD, Arlington, VA 22204

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Secondary Practice Location 1

Location 1901 N Washington St Ste 703Alexandria, VA 22314-1535 · Phone (703) 224-8983

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Alexandra Mack is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment– Home Health Agency– Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Alexandra Mack reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Arlington County Government Department Of Managment & Finance

Same address

Community/Behavioral Health

2120 WASHINGTON BLVD
Arlington, VA 22204

Reassigned Medicare billing, District of Columbia enrollment
76 clinicians in this Medicare group

NPI 1043280415 (703) 228-1600

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22204 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$0.00 typical visit price

range $65.18 – $194.86

Typical copayment $0.00 (range $16.29 – $48.71)

Most-billed visit code NA

Established Patient

$80.66 typical visit price

range $21.40 – $158.88

Typical copayment $20.16 (range $5.35 – $39.72)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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.

SARAH BIGMAN LCSW

Social Worker (Clinical)