Dr. Mark L Taff, DDS
Dr. Mark L Taff is a Dentist provider (Dentist) practicing in Potomac, MD, registered in the NPPES registry with NPI 1275870099 since 2013. The credential DDS stands for Doctor of Dental Surgery. Practices at Williamowsky, Taff, & Levine (listed at the same practice address in NPPES).
✓ Active NPI ✓ Valid NPI checksum
| NPI | 1275870099 |
|---|---|
| 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 | 3015303717 |
| Fax | 3014178170 |
| Enumeration date | 2013-01-14 |
| Last updated in NPPES | 2016-12-21 |
Taxonomy & licenses
| Taxonomy code | Specialty | Primary | License | State |
|---|---|---|---|---|
| 122300000X | Dentist | Primary | 56-90 | MD |
DDS — Doctor of Dental Surgery: A licensed dentist; DDS and DMD are equivalent dental degrees. About the DDS credential
Copy-ready billing details
Provider: Mark Taff, DDS NPI: 1275870099 Taxonomy: 122300000X (Dentist) Address: 7811 MONTROSE ROAD SUITE 300, Potomac, MD, 20854
Other providers at this practice address
| NPI | Name | Type | Specialty | Location |
|---|---|---|---|---|
| 1720106941 | Williamowsky, Taff, & Levine | Organization | Dentist | Potomac, MD |
| 1225375041 | Janice Grossman | Individual | Dentist | Potomac, MD |
Verify this record
Cross-check NPI 1275870099 against the authoritative CMS record: view Dr. Mark L Taff on the official NPPES registry .
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. Read the full guide or validate an NPI number.
Frequently asked questions
Where does Mark Taff practice?
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Source: CMS NPPES (public data). Snapshot 2026-07-11. Provider record last updated 2016-12-21.