Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum
Mrs. Mary Beth Slack, M. A. CCC-A
Audiologist in Falls Church, VA · enumerated 2018.
Data current as of Jul 13, 2026 · sourced from CMS NPPES
National Provider Identifier
1417459348
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Registry record
Entity type Individual (Type 1)
Name Mrs. Mary Beth Slack
Credential M. A. CCC-A
Sex Female
Practice address 3036 Graham Road, Graham Road Community Building, Falls Church, VA, 22042
Phone (571) 982-1511
Enumeration date Mar 7, 2018
Last updated in NPPES Mar 7, 2018
Taxonomy & licenses
231H00000X Audiologist Speech, Language and Hearing Service Providers · License 2201001206 (VA) 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
What is the NPI number for Mary Slack?
The National Provider Identifier (NPI) for Mary Slack is 1417459348, a Type 1 (individual) record in the CMS NPPES registry.
Where does Mary Slack practice?
The practice location on file with NPPES is in Falls Church, VA. Providers can have multiple locations; NPPES lists the primary practice address.
Other providers at this practice address
Browse all → Andrea Cossettini Audiologist · Falls Church, VA NPI 1952639007 Sara Shaw Audiologist · Falls Church, VA NPI 1396033791 Marisol Franqui-Gerard Audiologist · Falls Church, VA NPI 1043712979 Rebecca Yarbrough Audiologist · Falls Church, VA NPI 1689176513 Paul Farrell Audiologist · Falls Church, VA NPI 1013688555
Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2018-03-07.