SEARCH for Individuals with GISP®

Check the status of your GISP or any of the GISPs in our registry.

GISP Registry (as of May 3, 2025) Excel Spreadsheet here.

We strive to keep the information accurate and updated.    Please report errors to:  info@gisci.org

A GISP search (active / inactive)  in real time from the database is available here (For best results use the state abbreviation):

Enter information into the table listing below the map to search for a GISP

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  2. GISP: active
  3. Region: Maryland
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Jay Sullivan

GIS Analyst
GISP Approved
Active

Cert Number: 162057
Expiration: 01/25/2028 00:00:00
Zip: 21211

Kierran Sutherland

GIS Specialist
Active

Cert Number: 160560
Expiration: 12/25/2024 00:00:00
Zip: 21234

William Tewelow

Manager
GISP Approved
Active

Cert Number: 90266
Expiration: 01/25/2026
Zip: 20874

Mussie Tewolde

GIS Specialist
GISP Approved
Active

Cert Number: 88740
Expiration: 10/25/2025 00:00:00
Zip: 20772

Brian Tolley

GIS Specialist II
GISP Approved
Active

Cert Number: 160943
Expiration: 01/25/2027
Zip: 21643

Adam Travis

GIS/CADD Specialist
GISP Approved
Active

Cert Number: 90319
Expiration: 01/25/2026
Zip: 21030

Graham Twibell

Regional Planner
GISP Approved
Active

Cert Number: 160875
Expiration: 10/25/2026
Zip: 21211

Erwin Villiger

Principal, Sustainability and Climate Analytics
GISP Approved
Active

Cert Number: 68072
Expiration: 06/25/2026
Zip: 20874

Martin Vitiello

Program Manager
GISP Approved
Active

Cert Number: 47031
Expiration: 05/25/2028
Zip: 21784

Nick Walls

Program Manager
GISP Approved
Active

Cert Number: 90915
Expiration: 06/25/2026
Zip: 21014
Page Size:
Total Results: 234

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