I have found wonderful success on Indeed. With the big caveat of WHEN I AM HIRING FOR FULLY REMOTE.
This is all my anecdotal experience and personal opinion about the job market in Long Island, NY.
Pre-March 2020, some people in medical billing or medical coding did work remote. Those positions were generally for skilled employees that had already "paid their dues." When pandemic lockdown occurred, many companies were forced to accommodate remote working. Many employees who never thought they could or even asked to work remote were forced to. The employees seemed to like it a lot more than the employers did. Many of the workforce who got a taste of remote work are simply unwilling to have a job that requires them to work onsite.
My personal opinion is that training is easiest onsite. An entry level anyone will do best when surrounded by others. It is simply easier to ask a question of the next cubicle than to ask via MS Teams (or whatever virtual system you use). You might overhear a situation and ask more questions about it.
Over the past 2 years I have had to fill a few positions (all coding, with various experience levels required.) Each time, I tried to find someone somewhat local who could at least train onsite, or work hybrid, or even come into the office twice a month. I was very willing to hire from within my organization with less experience than an outside hire. Inside or outside, I received very few job applications. Those that did apply expected close to management pay for a job requiring 1 year of experience. For one position, I did find someone local for hybrid, and who quit after about 6 weeks. I didn't even get to finish her training. After months of a vacant position, I decided I would try fully remote. I received over 170 certified candidates in less than 48 hours. I am now onboarding my third fully remote (out of state) employee.
I wish I could find qualified, local candidates willing to work for what I think is a decent salary and benefits for the skill and experience required.
I wish (particularly) apprentice coders and entry level employees were willing to "pay their dues" onsite and transition to remote or hybrid.
The reality is I just could not. It is sometimes definitely an obstacle to have team members all over the US, but it IS doable.
You may want to consider remote, or be willing to wait 6 months until you find the right candidate.
PS - for medical billers (and medical assistants), I have often had good success by reaching out to local schools in the area that offer a medical billing program. You might even be able to become an official internship site and you get a student for a set time period to work for free. You can tell who knows their stuff and is willing to learn. It's like a free trial period and can be a great resource for hiring. Even the schools that don't have internship sites, you can get a lot of resumes and ask for instructor references.
Good luck!