most helpful answer i guess that would depend on the scope of practice for each one. many primary care providers are not that keen on providing gynecological care (assuming your ob days are over) and some ob-gyns are not crazy about handling your depression or dealing with hundreds of other non-gynecological problems that a woman might develop. if you had to pick one pick the primary care provider but consider finding one that has hospital privileges if that is important to you. many hospitals now use "hospitalists" that take over your case once you are admitted so not having hospital privileges may not be a big problem. talk to them both about your situation and you will see where they stand.
do i really need both ob/gyn and primary care provider at this stage in my life or could do without one. mean i currently have both but switching ob/gyns in the same practice as each other. i really like my current pcp and in which shes my prescribing doctor for my antidepressant. at the same time she doesn't have any admitting privileges at the hospital but the ob/gyn has them of course. anyway my pcp and ob/gyn are into separate offices locations from each other. the ob/gyn's office location is pretty much nearer my house then pcp.