Doctor profile · Federal record

Dr. Mark Letter, DDS

General Practice Dentistry · Kewaunee, WI

  • NPI 1528153616
  • 20 yrs on file
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1112 Lincoln Street
Kewaunee, WI 54216
(920) 388-5200
fax (920) 388-5202
Mailing address
Po Box 198, 1112 Lincoln Street
Kewaunee, WI 542160198

Credentials & registration

NPPES · NUCC
NPI registered
October 2006 — 20 yrs on file
Profile last updated
July 8, 2007
Specialty taxonomy
1223G0001X — NUCC code
State license (1)
Wisconsin #3865

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1528153616. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$58
Transactions
4
Manufacturers
1
Payer (manufacturer) Industry Txns Amount
Straumann USA LLC 4 $57.61

By nature of payment

Food and Beverage
$58

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
19
Patients
16
Total drug cost
$51
Drug Type Claims Patients Total cost
Amoxicillin Generic 19 16 $51

Frequently asked questions

Auto-generated from federal data
What is Dr. Mark Letter's medical specialty?
Dr. Mark Letter practices General Practice Dentistry in Kewaunee, WI.
Where does Dr. Mark Letter practice?
Dr. Mark Letter practices at 1112 Lincoln Street, Kewaunee, WI 54216. Office phone: 9203885200.
What is Dr. Mark Letter's NPI?
Dr. Mark Letter's National Provider Identifier (NPI) is 1528153616, issued by NPPES.