1964 Jean's obstetrician visits

Was Dr. Yantes also the obstetrician for Serena and John's birth?  Next year we will be reviewing Serena's birth records and John's in 2017.  And was $105 the total cost?  The statement below indicates one visit in October, November and December with an office visit (oc) every week beginning about six weeks prior to Mary's birth.  There is a hospital visit the day before the delivery, and four hospital visits follow.  Thirteen years later when Wendy was born, the Dr. charged $600, which was payable $100/month.