Public provider listing

Dr. Mark W. Dreyer, MD

3.7(3)

Dr. Mark W. Dreyer, MD is a Gastroenterologist practice in Waukesha, WI. Rated 3.7 from 3 public reviews. Phone is listed; no website is on file.

Address

1111 Delafield St #212
Waukesha, WI 53188

Website

Not listed

Verified listing details

Credentials, affiliations, and coverage

Checked Aug 15, 2026

Credentials and licenses

  • MD
  • Medical License · NPPES / CMS · WI
  • Professional license · WI
  • Professional license · WI

Affiliations

  • GI SPECIALISTS LLC

Sources

Federal data is attributed to its source and does not imply CMS endorsement.

Public media

Newest photos

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Dr. Mark W. Dreyer, MD listing photo 1
Public reviews

Newest reviews

Up to 10

Review details are not available here. The listing reports 3 public reviews.

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