Dr. Gregory Wallis
Dr. Gregory Wallis
Last updated: Aug 5, 2025

Dr. Gregory Wallis

  • Gender: Male
  • Sole propriator: No
  • NPI: 1790308278

Dr. Gregory Wallis DO

Resident

He is located at 835 Southeast Bishop Boulevard in Pullman, WA 99163. His National Provider Identifier (NPI) number is 1790308278. Appointment can be made via the phone number (509) 332-2541.

Medicare Enrollment

Dr. Gregory Wallis is enrolled to bill Medicare as a Practitioner - Emergency Medicine .

Bills through: Freeman-oak Hill Health System

Based on Medicare's public enrollment records as of Jul 17, 2026. This reflects Medicare fee-for-service enrollment only and is not a comment on insurance accepted, quality, outcomes, or board certification.

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  • Address: Suite 200 825 Southeast Bishop Boulevard Pullman, 99163, WA
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Dr. Samantha Semerjian
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  • Address: Apartment 25 210 Northwest Terre View Drive Pullman, 99163, WA

Questions & Answers

Where can you meet with Dr. Gregory Wallis?

Dr. Gregory Wallis's office is located at 835 Southeast Bishop Boulevard in Pullman, WA 99163.

Does Dr. Gregory Wallis accept insurance?

Unfortunately we don't have any information if Dr. Gregory Wallis accepts insurance.