Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

MRS. CRYSTALL M SISCO
NPI 1669124301
Social Worker - Clinical in Bowie, MD

Active since January 24, 2022
1607 MELFORD BLVD, SUITE 400, BOWIE, MD 20715(202) 878-6626 Get Directions Write a Review

NPPES record last updated: October 2, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Oct 2, 2026, Jan 24, 2022 (2 updates tracked since 2022).

About Mrs. Crystall M Sisco NPPES

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

MRS. CRYSTALL M SISCO (NPI 1669124301) is an individual clinical provider in Bowie, Maryland, licensed in District Of Columbia (LC200005104) and active in the NPI registry since January 2022.

NPPES Registry Identity

NPI1669124301
Entity TypeIndividualFemale
Primary Taxonomy1041C0700X
Provider Legal NameMRS. CRYSTALL M SISCO
Location Address1607 MELFORD BLVD, SUITE 400Bowie, MD 20715-4305
Mailing Address13324 Burleigh StUpper Marlboro, MD 20774-1961 · (202) 498-4460
Sole ProprietorNo
Enumeration DateJanuary 24, 2022
Last NPPES UpdateOctober 2, 20262 updates tracked since enumeration
NPPES CertifiedOctober 2, 2026
✔ NPI 1669124301 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 DC · LC200005104✔ Licensed in MD · 28161
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.
1607 MELFORD BLVD, Bowie, MD 20715

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 Crystall Sisco's NPI number?

The NPI number for Crystall Sisco is 1669124301. It was assigned to this individual provider in the NPPES registry on January 24, 2022.

Where is Crystall Sisco located?

Crystall Sisco practices at 1607 Melford Blvd Suite 400, Bowie, MD 20715. The listed phone number is (202) 878-6626.

What is Crystall Sisco'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 Crystall Sisco was last updated on October 2, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 19 days 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.