You'll never feel the need to see a new gynecologist once you've visited Dr. Lawrence K. Koning, MD in Corona, California. Dr. Lawrence K. Koning, MD is a OB-GYN that specializes in a variety of birth control, pregnancy assistance, pregnancy testing, prenatal care, fetal assessments, gestational diabetes, high-risk pregnancy care, child delivery, post-partum care, ovarian cysts, endometriosis, uterine fibroids, thickened endometrium, adhesions, ectopic pregnancies.