Hi. I would go to the Animal Medical Center website and email both dermatology and internal medicine and see what they say. I did that last year over Memorial weekend regarding a dental condition my vet thought my Biewer puppy had. I not only got an immediate response, but the dentist (who was the best) called me and had me email all the blood work that was done. I am in NJ, so I ultimately had him see my little guy. I am sure if you emailed them, they would respond and tell you if you are in the right department and if not, direct you to one of the specialists who can help you. The link is:
Specialties & Services | Animal Medical Center
Good luck with your little guy. There is nothing sadder than a sick puppy.