Screwworm Certificate in Phoenix, AZ — USDA-Accredited Vets for Mexico Travel

Last updated August 20, 2026 · Independent guide — not affiliated with USDA or SENASICA

Phoenix Sky Harbor flies nonstop to Mexico City, Guadalajara and the beach destinations, and Arizona drivers reach the Nogales border crossing in about 3 hours. The Phoenix–Scottsdale metro was one of the first in the country where a clinic publicly launched a dedicated screwworm certification service after the August 3, 2026 rule took effect.

The requirement: since August 3, 2026, dogs entering Mexico from the US must carry an NWS Inspection Certificate signed by a USDA-accredited veterinarian within 5 days of arrival in Mexico. No APHIS endorsement is needed — the signed form is presented at the Mexican border or airport. Full guide here.

Vets offering screwworm certificates in Phoenix

Clinics in the Phoenix area that publicly advertise USDA-accredited certificate services:

Pinnacle Peak Animal HospitalAdvertises accredited services

Scottsdale, AZ

Publishes a dedicated screwworm certification service page. 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 Phoenix?

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 Phoenix veterinarian issuing NWS certificates? Get listed — free while the directory grows.