They can take a look, give you a referral, and direct you on the next steps.
If you do not have a primary care doctor, go to a clinic.
A good local resource is La Familia:
Phone: +1 (505) 982-4425
Locations
La Familia Alto Street Clinic, 1035 Alto Street
La Familia Soutside Clinic, 2145 Caja Del Oro Grant Road
Free skin cancer screenings by UNM’s dermatology department held 3-4 times per year at locations across New Mexico:
Go to their website here to find when and where their next event is
Phone: +1 (505) 272-6222
Free skin cancer screenings by volunteer dermatologists in events across the Southwest
Go to their website here to find out more