Here is the scoop...there are two trains of thought here in Rhode Island (for the most part). People who have babies at Women & Infants and those who have babies at Memorial Hospital in Pawtucket. The best way I can make a comparsion is to Stop & Shop and Whole Foods, respectively. There are some good docs through the Women & Infants network; some of the doctors who are most recommended are Dr. Beidel (in a practice by himself) or the doctors at OB/GYN Associates (the largest ob practice in the state with both MDs and midwives). Women & Infants delivers about 10,000 babies per year and a premier NICU facility (My daughter who is 3 months old was born at W&I and stayed 6 days at the NICU there). Memorial Hospital is a community hospital delivering about 500 births per year. Most of the babies of delivered by 3 doctors (in seperate practices). You can find their information at http://ribirth.net/. There is more emotional care given at Memorial Hospital and more focus on the family. Memorial Hospital is the only hospital in RI that is certified as Mother Friendly and Baby Friendly. There are additional hospitals in Rhode Island that provide more of a "community" feel; you can find them on the Rhode Island Birth Network website as well.
Also, as far as I know there is only one provider who does homebirths, it is Mary Mumford Haley. She comes very, very highly recommended. There are no free standing birth centers. The most highly sought after doula is Jessica Fuss since she studied under Ina May Gaskin. There are several other very good doulas and they have a great website.
Other great resources is Bellani Maternity for hypnobirthing classes, etc and Rhode Island New Mom Connection (Kristen Kardos) is an excellent resource. Either way, a great starting point is RI Birth Network website.