Last updated August 20, 2026 · Independent guide — not affiliated with USDA or SENASICA
Tucson sits about an hour north of the Nogales port of entry — the main crossing into Sonora — so it serves both flyers out of Tucson International and the steady stream of snowbirds and RV travelers driving into Rocky Point and mainland Mexico. Mobile services in the Nogales corridor have begun advertising NWS certificates specifically.
Vets offering screwworm certificates in Tucson
Clinics in the Tucson area that publicly advertise USDA-accredited certificate services:
Advertises screwworm certificates; USDA-accredited vet on staff. Confirm by phone that a USDA-accredited vet will sign the NWS Inspection Certificate and that an appointment fits your 5-day window.
Can't find an accredited vet in Tucson?
- Call clinics that advertise international health certificates — they're the most likely to have a USDA-accredited vet on staff.
- Ask the exact question: “Can a USDA-accredited veterinarian at your clinic complete the NWS Inspection Certificate for Pet Dogs going to Mexico?”
- Contact the Arizona USDA APHIS Veterinary Services office for a referral, per the official APHIS guidance.
- Download the form ahead of your appointment from the APHIS Mexico pet travel page — many clinics haven't seen it yet.
How to find a USDA-accredited vet →
Are you a Tucson veterinarian issuing NWS certificates? Get listed — free while the directory grows.