Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Dean Alexander Slack
Peer Specialist in Bel Air, MD · enumerated 2024.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1952144263
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Registry record
Entity type Individual (Type 1)
Name Dean Alexander Slack
Sex Male
Practice address 21 W Courtland St, Bel Air, MD, 21014
Phone (410) 838-3442
Fax (410) 838-3441
Enumeration date Jun 14, 2024
Last updated in NPPES Jun 14, 2024
Taxonomy & licenses
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 this the official NPI registry?
No. NPI Portal is a private site built on public CMS NPPES data. The official registry is npiregistry.cms.hhs.gov, operated by CMS.
What specialty is Dean Slack?
Dean Slack is registered in NPPES with the primary taxonomy of Peer Specialist. The taxonomy code describes the provider's classification and area of specialization for claims and credentialing.
Other providers at this practice address
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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2024-06-14.