No. The commercial project period and individual authorization are different. Review the actual status record and necessary process before relying on continued work.
Plan early from the real dates
Identify current permission, proposed activity and outstanding steps. Do not promise a government result simply because the employer wishes the work to continue.
Allow time for the evaluator to review the foreign program, request any missing records, and issue a report, then time for the employer to confirm whether licensing applies. The initial review should produce milestones for credential collection, employer-letter approval, any petition route, travel and permissible start. A Canadian outside the country may request TN admission through border inspection or preclearance, or the employer may submit an I-129 petition to USCIS when that route fits the facts. Keep copies of everything the officer retains, and note the admission period stamped or recorded, because the renewal calendar starts from that date rather than from the start date the hospital chose. A period requested in the employer letter should reflect the real engagement rather than a maximum, since an extension is a fresh assessment against the same requirements rather than an automatic renewal.