We just drove up to the UCSF hospital and dropped off a couple hundred pounds of supplies. No fuss:
https://www.rinse.com/blog/rinse/covid-19-medical-supply-dri...
Here's an example organization with a long list of facilities accepting donated supplies:
I'm sure it's harder to convince the terribly inefficient US health care bureaucracy to pay for this. I noticed our local Chinese American community, combating a worrisome rise in racism, has been active in the philanthropic distribution of masks. You might try raising funding that way, instead of through the bureaucracy.
I've also noticed a reluctance to accept the Chinese KN95 standard. People don't trust it, for better or worse. I think they would rather have homemade cloth masks, to be honest. Not sure how you can change that perception.
Best of luck in your efforts!