Usually, you refer to a Ph.D. as "Doctor" only when in their official capacity such as a professor at a university. I person with an Ed.D. (such as Jill Biden [not a Ph.D.], because an Ed.D. is the easiest Doctorate and least academic demanding of all higher degrees) is called "Doctor" as a sign of respect when they are in an educational setting. Much like when Barbara Boxer dressed down a high-ranking military officer for calling her "Ma'am" which is a sign of respect, especially in the military for female officers, just as you would address a higher-ranking male officer as "Sir." Boxer insisted he address her only as "Senator" and not Ma'am as if it was a title of nobility. We do not confer nor recognize titles of nobility for American citizens. To me, Dr. Jill Biden is Mrs. President, Mrs. First Lady, or Mrs. Biden depending on the setting. If she was teaching a course at a university and I was in her class I may refer to her as Dr. Biden, but probably not because these people are already full of themselves and I don't need to stroke their ego further.

By the way, do you know what the three degrees are?

There's the B.S. which stands for Bull Sh!+
The M.S. stands for More Sh!+
The Ph.D. stands for piled highest and deepest.

Usually, you refer to a Ph.D. as "Doctor" only when in their official capacity such as a professor at a university. I person with an Ed.D. (such as Jill Biden [not a Ph.D.], because an Ed.D. is the easiest Doctorate and least academic demanding of all higher degrees) is called "Doctor" as a sign of respect when they are in an educational setting. Much like when Barbara Boxer dressed down a high-ranking military officer for calling her "Ma'am" which is a sign of respect, especially in the military for female officers, just as you would address a higher-ranking male officer as "Sir." Boxer insisted he address her only as "Senator" and not Ma'am as if it was a title of nobility. We do not confer nor recognize titles of nobility for American citizens. To me, Dr. Jill Biden is Mrs. President, Mrs. First Lady, or Mrs. Biden depending on the setting. If she was teaching a course at a university and I was in her class I may refer to her as Dr. Biden, but probably not because these people are already full of themselves and I don't need to stroke their ego further.

By the way, do you know what the three degrees are?

There's the B.S. which stands for Bull Sh!+
The M.S. stands for More Sh!+
The Ph.D. stands for piled highest and deepest.

I was looking for three icons of a steaming pile of bovine scat but couldn't find one. Reminds me of the two Korean Air pilots that crashed in San Francisco a few years back... Pilot Wei Tu Lo and Co-Pilot Sum Ding Wong.