List of certified individuals

Employers seeking GI cerdentialed applicants for a job opportunity can email us the details job. We can send out a notification to the certificant community.  For each job, please email with the following information:

  • Name of the Position
  • Brief Description (4-5 sentences)
  • Point of Contact
  • Location of Job
  • Start date
  • Duration

Employers seeking to verify an applicant’s NGICP credential can use the directory below to look up a candidate. Employers can also request an official letter from NGICP documenting the current certification status of an individual by emailing


Number of certified individuals

Certificants are required to complete 14 hours of professional development every two years to meet certification requirements.

Fulfilling Professional Development Hours (PDHs) for Recertification & PDH Opportunities


Directory of Certificants

First NameLast NameCityStateCertification No.Effective Date
Christopher Williams Upper Marlboro MD 00066 June 30, 2017
Johnny Williams Cincinnati OH 00134 December 7, 2017
Kelli Williams Pittsburgh PA 00202 December 7, 2017
Jermaine Wilson Milwaukee WI 00276 April 25, 2018
Zhongyan Xu Centreville VA 00263 February 13, 2018
Tanner Yess Dayton KY 00147 December 7, 2017
Chuck Youmans Dallas GA 00293 June 6, 2018
Guy R Youmbi Bowie MD 00110 December 7, 2017
Kenneth Young Camp Spring MD 00278 April 25, 2018
Solomon Zacchini Arlington VA 00053 January 26, 2017
Ronald Zagrocki Aliquippa PA 00209 December 7, 2017