Certification is Required in Oregon. CNAs may not work in Oregon using a CNA certificate from another state. Findings of abuse, neglect or misappropriation andor discipline against a CNA in another state may hinder a persons ability to obtain an Oregon CNA certificate or limit employment opportunities in Oregon. Verification of Certification from your Previous State. Before sending us your Endorsement Application Call the state where you are currently certified to Determine whether your certification is current or expired. If your certification is expired, you are not eligible for the endorsement process. Since fees are not refundable, check your certification status before submitting this application. Inquire about the fee for written verification of your certification. Most states charge a fee for written verification. Send to the state where you are currently certified Complete top portion only of the Verification form. Mail the Verification form and fee if any to the state where you are currently certified. The state in which you are certified will return the completed form directly to Oregon State Board of Nursing. There will be a delay if you send this form to us. Click for a list of nursing assistant registries located in other states. Exception for California Certificate Holders. Mail the blank Verification form along with the Endorsement application to the Oregon State Board of Nursing. The OSBN performs telephone verification, as this is the only option available in California. Updated August 26th, 2016 Learn how to become a social work in your state with our licensure map, and provided information about Masters in Social Work MSW. License Verification. S. High Street, 1. Floor Columbus, Ohio 4. Tel 6. 14 4. 66 3. TTY 8. 77 6. 44 6.