Yes
No, before ... as in: Marcus Welby, MD
Yes. You should write it at John P. Doe, MD
Not necessarily. Commas are a feature of sentence structure.
When punctuating "MD FACS," it is typically written with a space between the "MD" and "FACS," so it appears as "MD, FACS." The "MD" stands for Doctor of Medicine, while "FACS" stands for Fellow of the American College of Surgeons. Including a comma before "FACS" is standard practice, especially in formal contexts, to separate the two credentials clearly.
No, there is no comma between the month and the date in the heading of a letter. For example, "October 1, 2021" would not have a comma between October and 1 in the heading.
Between everyone in a business, the Chairman is the top dog. Between the MD and CEO, however, the MD is the superior office, with the CEO reporting to the MD.
NO. You replace the comma with "of"... For instance, July of 2009
No, you do not typically put a comma between a person's last name and their suffix (e.g., Jr., Sr., III). You would write the full name without a comma between them.
A comma splice is the attempt to join two independent clauses with a comma without a coordinating conjunction. For example, "She walked the dog last night, today she fed it."
The halfway point between Manchester, Md and Elkridge, Md falls around the Northwest Expressway in Owings Mills, MD.
The comma goes between the day and the month and between the number and the year: Wednesday, June 5, 2012.
Baltimore, Maryland is located between Gaithersburg and Severn.