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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARK LEONARD WIESNER D.D.S.
NPI 1912982158
Dentist in Washington, DC

Active since December 09, 2005
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02, WASHINGTON, DC 20307(202) 782-6815(202) 782-6987 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About Dr. Mark Leonard Wiesner D.d.s. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARK LEONARD WIESNER D.D.S. (NPI 1912982158) is an individual dentist in Washington, District Of Columbia, licensed in Maryland (10757) and active in the NPI registry since December 2005.

NPPES Registry Identity

NPI1912982158
Entity TypeIndividualMale
Primary Taxonomy122300000X
Provider Legal NameDR. MARK LEONARD WIESNERCredential: D.D.S.
Location Address6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02Washington, DC 20307-5400
Mailing Address6900 Georgia Ave. Nw, Building T20, Room 206aWashington, DC 20307-5400 · (202) 782-0988 · Fax (202) 782-9195
Phone(202) 782-6815
Fax(202) 782-6987
Sole ProprietorNo
Enumeration DateDecember 9, 2005
Last NPPES UpdateJuly 13, 2026
✔ NPI 1912982158 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentistDental Providers
Taxonomy Code122300000X
License✔ Licensed in MD · 10757
Definition
A dentist is a person qualified by a doctorate in dental surgery (D.D.S.) or dental medicine (D.M.D.), licensed by the state to practice dentistry, and practicing within the scope of that license. There is no difference between the two degrees: dentists who have a DMD or DDS have the same education. Universities have the prerogative to determine what degree is awarded. Both degrees use the same curriculum requirements set by the American Dental Association's Commission on Dental Accreditation. Generally, three or more years of undergraduate education plus four years of dental school is required to graduate and become a general dentist. State licensing boards accept either degree as equivalent, and both degrees allow licensed individuals to practice the same scope of general dentistry. Additional post-graduate training is required to become a dental specialist.
6900 GEORGIA AVE. NW, Washington, DC 20307
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Other Providers at the Same Location NPPES 9

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. THOMAS SPALDING SYMPSON D.D.S.
Dentist (Orthodontics and Dentofacial Orthopedics)
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02
WASHINGTON, DC 20307
District of Columbia (202) 782-6815
DR. MARTY GEORGE MOON D.D.S.
Dentist (Prosthodontics)
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02
WASHINGTON, DC 20307
District of Columbia (202) 782-6881
DR. MING TED WONG D.D.S.
Dentist (Prosthodontics)
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02
WASHINGTON, DC 20307
District of Columbia (202) 782-0988
DR. PHILIP DENICOLO D.M.D.
Dentist (Periodontics)
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02
WASHINGTON, DC 20307
District of Columbia (202) 782-6815
DR. VESNA ELE D.D.S.
Dentist
6900 GEORGIA AVE. NW, BUILDING 2, ROOM 1D02
WASHINGTON, DC 20307
District of Columbia (202) 782-0988
DR. JULIA A LYNCH M.D.
Pediatrics (Pediatric Infectious Diseases)
6900 GEORGIA AVE. NW, WRAMC, BLDG 2, DEPARTMENT OF PEDIATRICS
WASHINGTON, DC 20307
District of Columbia (202) 782-6248
MR. WILLIAM JOHN HULEATT LCSW
Social Worker (Clinical)
6900 GEORGIA AVE. NW, WRAMC BLDG 6, DEPARTMENT OF SOCIAL WORK
WASHINGTON, DC 20307
District of Columbia (202) 782-6378
BENJAMIN PALMER D.O.
Student in an Organized Health Care Education/Training Program
6900 GEORGIA AVE. NW, WRAMC, BLDG 2, DEPT OF GME
WASHINGTON, DC 20307
District of Columbia (304) 573-0149

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Mark Wiesner's NPI number?

The NPI number for Mark Wiesner is 1912982158. It was assigned to this individual provider in the NPPES registry on December 9, 2005.

Where is Mark Wiesner located?

Mark Wiesner practices at 6900 Georgia Ave. NW Building 2, Room 1d02, Washington, DC 20307. The listed phone number is (202) 782-6815.

What is Mark Wiesner's specialty?

The primary specialty registered for this NPI is Dentist with taxonomy code 122300000X.

When was this NPI record last updated?

The NPPES record for Mark Wiesner was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.