Dr Jared Dashevsky writes Healthcare Huddle (acquired by Workweek). He's scaled to over 30,000 subscribers. And it was pretty simple.
Here are 12 frameworks that work for healthcare content creation (and mistakes to avoid).

0:00 Intro
1:14 Consistency is king; systematise it
7:40 McKinsey reverse pyramid principle for writing
9:10 You need to have a unique/controversial take
11:41 Content for network building
15:51 Lean startup thinking does not work for content
20:35 Nobody cares about errors
25:52 Injecting personality is a competitive advantage
29:32 Boring content will make you rich
34:13 Don't make a useless audience; acquire data
41:19 Lessons from Jerry Springer
45:18 Hyperoptimisation paradox
48:49 Do things that don't scale

Links
Healthcare Huddle: https://workweek.com/brand/healthcare-huddle/
Dr Jared Dashevsky: https://twitter.com/jareddashevsky
Dr Mustafa Sultan: https://www.musty.io/