Welcome to Healing Well! Sorry your post was missed and not responded to in a timely fashion.
I can tell you that in my experience, whenever taking an antibiotic, I'd get terrible gastritis and esophagitis. I had so much pain at the LES area that it was very painful to eat, and I'd always lose about 20 pounds. Just a bite of food would be excruciating. I found the only thing I could comfortably eat was egg custard.
An endoscopy can diagnose the gastritis and any lesions, as you said. I can tell you that these things take a LONG time to heal. I'd always be two to three months before feeling better.
I have found Carafate suspension to be a lifesaver. It coats the stomach and esophagus, and protects them as they heal. When in pain, a dose of Carafate would make me feel better almost immediately. It would definitely be worth a try. It's a prescription drug, so you'll have to see/call a doc to see it.
I can't help you with a referral, but maybe by bumping this up to the front page again, someone will see it who can give you a name.
Nissen Fundoplication 2/09
"Whatever you fight, you strengthen, and what you resist, persists.”
“Worry pretends to be necessary but serves no useful purpose”
“Accept - then act. Whatever the present moment contains, accept it as if you had chosen it. Always work with it, not against it.”