My child got bilateral hearing aids at age 4. He has "Safari" by Oticon.
http://www.gearforears.com/
His hearing aids came with this device, it goes over the hearing aids and clips to his shirt. I would not have been able to sleep if I sent him off to preschool without it. At 6, he still wears it. I bought more of them from Ear Gear.
My child sees Dr. Sideris at the the Laurel Lakes Outpatient Center of Children's Hospital. She is very good with children. But if the hearing aids get broken, it takes a long time to get them fixed with CNMC.
So we take them to Auditory Services in Silver Spring, MD
http://www.auditoryservices.com/
This place is hands down the place to service hearing aids.
Montgomery County Infants and Toddlers program will send you a Deaf and Hard of Hearing teacher, as well as a speech therapist when your child is old enough (or maybe now), I don't know.
I don't know where you got the BAER, but I would recommend it be done at Georgetown Hospital. My son sees ENT Dr. Milmoe at Georgetown. We see most other specialists at Children's, but the wait to see an ENT and the ENT staff at Children's is atrocious. Dr. Milmoe is top notch and easy to get an appointment. My son had BAER (under anesthesia both times) at Children's and at Georgetown. We were much happier with the results (more detailed) at Georgetown.
So if you need an additional BAER, I recommend Georgetown, I don't remember the doctor's name, as we set it up with Dr. Milmoe's dept.
Dr. Preciado at Children's is known nationally for coclear implants. He is an excellent doctor, but at the time it was very difficult to get an appointment with him. I met people in the waiting room who had traveled (by bus -- Amish) from St. Mary's County to see this doctor. Someone else traveled from New York.
In the future, there is a school in Montgomery County (Rockville) which many hard of hearing and deaf kids go to school. That is Flower Valley E.S. has the deaf and hard of hearing program and cued speech.
I know nothing about the River school.
Here is a Montgomery County group.
http://groups.yahoo.com/neo/groups/mcahic/info
Have questions, these are the people to ask. My son's Montgomery County DHOH teacher is on the list serve as are other MC school employees.
Hope that helps.