And is almost certainly some sub-set of the building code -- for hospitals.
This is what you must drill into your brain:
Our craft is ruled by a composite of rule books.
The NEC is NOT the end all.
If building a bank... EXTRA rules.
If building a service station... EXTRA rules/ exemptions.
If building a hospital... EXTRA rules... unique to them.
And so it goes.
This is why electrical contractors specialize. Anyone entering these sectors gets BURNED/ blind-sided during their first jobs. They can count themselves lucky to even stay afloat.
BTW, even wiring up elevators is brutal for a 'virgin.'
I had to walk my boss through the procedure. He'd never done one in all his career -- yet he bid the work -- pretty much in the blind. He later admitted he was glad to get out of that job -- with his company intact.
His expertise was in underground/ trunk utilities. Just another area that has EXTRA rules above and beyond the NEC. Once he left that zone -- he was in trouble. He was, however, the king of that domain. It was his bread and butter.
Still, an inspector should back it up with a reference. Makes things go much smoother. I do it when I wear my inspector hat. It helps me to stay in the book. With all the changes every three years, it's dangerous to shoot from the hip
I am guessing California is like Florida. After the electrical inspector/plans examiner looks at the hospital, we have a hospital plan review and inspection by AHCA http://ahca.myflorida.com/ They have their own rules that go far beyond anything I can enforce via the NEC but it is still on the plan. I can enforce the plan.