That's nonsense.
You know exactly what he's using it for.
If he has a valid license to practice medicine, why would you deny the prescription?
My medical license doesn't limit my practice nor does it require me to not use off label drugs, etc. If it did, I'd be out of business as many common anesthesia drugs are off label in pediatric patients.
I could open an Aesthetic and Wellness Center tomorrow and sclerose spider veins and do topical treatments, laser fat reduction nonsense, etc after a weekend class and free manufacturers support. Not to mention nutritional support, aura manipulation, etc.
I actually know two anesthesiologists that did this in CA and AZ, they are doing better than ever and never work late, take call or weekends. Though they probably prescribe the usual cream for AKs and not topical injectables. And of course I would never try to manipulate an aura without an experienced practitioner guiding me, very dangerous indeed. Lol.