Mark L. Taff, DDS
Dentist · Potomac, MD
Mark L. Taff, DDS is a dentist with a practice address in Potomac, Maryland, and NPI 1275870099, issued on Jan 14, 2013. Check the license (Maryland 56-90, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mark L. Taff
- Credential
- DDS
- Primary taxonomy
- Dentist 122300000X
- License number
- 56-90 MD
Self-reported in NPPES; status is on the state search - Practice location
- 7811 Montrose Road Suite 300, Potomac, MD 20854
- Phone
- (301) 530-3717
- Enumerated
- Jan 14, 2013
- Record last updated
- Dec 21, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (301) 417-8170
- Entity
- Type 1 · individual
8 nearest dentist records → All 1,870 in Maryland → Look up another NPI →
Also registered at 7811 Montrose Road Suite 300
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Janice Grossman, DDSDentist1225375041
Verify Mark L. Taff in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license 56-90Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
49% fewer Medicare Part D claims than the average dentist in 2024
44 Medicare Part D claims for 21 beneficiaries, against an average of 86 among the 51,021 providers of this specialty who prescribed in Part D.
Most prescribed
- Amoxicillin17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $16.30
1 payment: food and beverage; the largest payer was Zimvie Inc. The 31,974 providers of this specialty with any payment received $540.36 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Mark L. Taff among 1,870 dentist records in Maryland
Mark L. Taff, DDS is one of 1,870 dentist records with a practice address in Maryland. 60% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2013, is newer than 59% of them.
- NPI issued2013 · 59% of these records are older, 36% newer
- In a Medicare fileYes · 60% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2016 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 122300000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 dentist records list a practice address in Potomac
They are 23 of the 497 NPPES records with a practice address in Potomac, and 1,870 dentist records in Maryland.
All 1,870 in Maryland → Every provider in Potomac → Dentist nationwide →
The 8 dentist records with the nearest ZIP codes
- Sara Amini-Zand, D.D.S.Potomac, MD 208541316116320
- Jay Chung, DDSPotomac, MD 208541194933325
- Warren Danick, DDSPotomac, MD 208541679607220
- Joseph Debenedictis, D.D.SPotomac, MD 208541992032775
- Naomi Disten, DDSPotomac, MD 208541912054305
- Thomas Heffelfinger, DDSPotomac, MD 208541033323365
- Inna Kost, DMDPotomac, MD 208541952352155
- Nanette Larose, DDSPotomac, MD 208541942212501
Common questions
What is Mark L. Taff, DDS's NPI number?
Mark L. Taff, DDS's National Provider Identifier (NPI) is 1275870099, issued on Jan 14, 2013. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Taff, DDS located?
The NPPES record lists a practice address at 7811 Montrose Road Suite 300, Potomac, MD, 20854. Phone: (301) 530-3717. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Taff, DDS's license?
NPPES lists Maryland license number 56-90, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Mark L. Taff, DDS prescribe under Medicare Part D?
In 2024, Mark L. Taff, DDS had 44 Medicare Part D claims for 21 beneficiaries; the average among dentist prescribers was 86. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.