Hi i am a WHNP in northern California and I'm not sure if you found a place but onsite ultrasound has classes in Monterey, California. I just took a 2 day limited ultrasound class in obstetrics and gynecology that was hands on with only 3 other providers. It was an excellent course with 2 ultrasound instructors. Here is their website Welcome to OnSite Ultrasound Sonography Solutions (OnSite Ultrasound Training Solutions)