I haven't had mine yet, but my ob has that technology and was mentioned in previous posts for ob referrals. The practice is called Fashion Island OBGYN, here is their website: https://fiobgyn.com/
both times I've gone to prenatalpeek.com there's a bunch of different places. And i always loved the outcome. The second time around with my dd she wouldn't let us a good look so they offered a free reschedule for a day she cooperated :-)
Re: 3d/4d ultrasound
Before The Stork has a few locations www.beforethestork4d.com
Picture an Angel is good too https://pictureanangel.com/
I went for a 2d gender ultrasound at this place, but they do 3d/4d!
Its in Costa Mesa
www.ultrasoundme.com/services
We went to Before the Stork twice with this pregnancy and LOVED it. The 3D ultrasound looks so much like him!