I've spent more than fifteen years getting doctors, nurse practitioners, therapists, and whole group practices enrolled with payers. I've filled out every version of the 855, sat on hold with every carrier, and learned the hard way which "small" mistakes cost a practice three months of revenue. This is where I write it all down, so you don't have to learn it the hard way too.
Stories are anonymized composites. No patient information, ever. Opinions are my own.