I have to comment on Associates in OBGYN. I cannot recommend them as the previous poster did. I was using them until I was 32 weeks pregnant, when it became apparent I would not have the birth I wanted with them. True, I wanted a natural birth, but I was told I would have to go to Bethesda North because my doctor was on the board there. I had no problem with that, but I was never even given a choice. When he made a crack about my hormones to my husband and I heard the office staff being incredibly rude to a patient in the waiting room, that was it. I did like Dr. Langenderfer there, but she was on maternity leave when I needed her, and they rotate you through all the doctors there anyway so you'll "know" who's delivering your baby (although if you've only met them once, and it could have been months ago, do you really know them?).
I left there and went to see Dr. Horlacher and Dr. Wood at Miami Valley Hospital in Dayton. So worth the drive! They are excellent, caring, compassionate doctors. Their patients all rave about them. They are men, but they also have a woman who works in the office too. I am not sure what her official title is, but I liked her too. And with only 3 of them, you will know who delivers your baby.
Just my two cents!