well.. I'm a dentist myself. I consider myself a primary dental care provider, but I do not consider myself a
primary care physician. [i.e. MD/DO who has residency training in primary care (GP/FP, internal med)]
I use the term Dr., but I would never refer to myself as a "physician". Nor would I (personally) refer to a podiatrist as a "physician".
PCP can mean one of two things.. either a Primary care Physician (MD/DO) or
Primary care provider (any allied or other health care provider.. such as you and I as primary dental and podiatric care providers). If you think they are one and the same then by your definition a Nurse Practitioner can also be defined as a "Physician" as can a PA, and an optometrist, and every other health care provider almost. (which gets a bit silly really if you ask me)
However, I agree with your technical definition of the word "doctor".
👍