Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Crystall M Sisco
Social Worker in Bowie, MD · enumerated 2022.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1669124301
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Registry record
Entity type Individual (Type 1)
Name Mrs. Crystall M Sisco
Sex Female
Practice address 1607 Melford Blvd, Suite 400, Bowie, MD, 20715
Phone (202) 878-6626
Enumeration date Jan 24, 2022
Last updated in NPPES Jun 11, 2026
Taxonomy & licenses
104100000X Social Worker Behavioral Health & Social Service Providers · License 28161 (MD) Secondary
104100000X Social Worker Behavioral Health & Social Service Providers · License LG200001469 (DC) Primary
What is an NPI number?
A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.
Frequently asked questions
Is NPI 1669124301 active?
Yes, as of the latest NPPES snapshot, NPI 1669124301 is active (record last updated 2026-06-11).
How do I verify Crystall Sisco's NPI record?
Cross-check NPI 1669124301 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2026-06-11.