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Dr. Mark L Taff, DDS

Dentist in Potomac, MD · enumerated 2013 · practices at Williamowsky, Taff, & Levine.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1275870099

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Registry record

Entity type Individual (Type 1)
Name Dr. Mark L Taff
Credential DDS
Sex Male
Practice address 7811 Montrose Road Suite 300, Potomac, MD, 20854
Phone (301) 530-3717
Fax (301) 417-8170
Enumeration date Jan 14, 2013
Last updated in NPPES Dec 21, 2016

Taxonomy & licenses

122300000X Dentist Dental Providers · License 56-90 (MD) Primary
DDS · Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential

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.

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Frequently asked questions

Where does Mark Taff practice?
The practice location on file with NPPES is in Potomac, MD. Providers can have multiple locations; NPPES lists the primary practice address.
What is the NPI number for Mark Taff?
The National Provider Identifier (NPI) for Mark Taff is 1275870099, a Type 1 (individual) record in the CMS NPPES registry.

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Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2016-12-21.