Koala Labs Logo | Palo Alto CA | Blaine WA Koala Labs | Exclusive Ultrasound  Analysis
Dr. John Stevens, MD | Consultant Sonologist | Prenatal Diagnosis
Three pictures of sonograms of fetuses.
About Dr. Stephens


At Koala Labs, your ultrasound scan will be performed personally by John D. Stephens, M.D., FACOG(USA), FRCOG(UK). Dr. Stephens is a Board Certified Obstetrician (Diplomate of the American Board of Obstetrics and Gynecology). His medical training in England is also recognized by the Royal College of Obstetricians and Gynecologists ("OBGYN"). In 1986, he was elected to be a Fellow. He is a licensed physician in all clinic locations. Dr. Stephen's is also a California Accredited MD Sonlogist for providing Nuchal Translucency Ultrasound (NT).

For 26 years, he has been specializing in diagnosing the health and sex/gender of unborn babies. He has extensive knowledge in the field of prenatal diagnosis, especially in the area of ultrasound.

Dr. Stephens received his medical training in Australia and England and his medical genetics training in the United States. Ultimately, he specialized in obstetrical genetics after undertaking three years of fellowship training at the University of California Medical Center in San Francisco. From a background of having been an experienced obstetrician and gynecologist, his practice is now dedicated to obstetrical ultrasound and prenatal diagnosis.

Koala Labs has recently added first trimester screening testing for Down syndrome and trisomy 18, using a combination of ultrasound together with blood testing from the mother. It is called Ultra-Screen®.  

1967 Jan. Graduated MB:BS Sydney University School of Medicine

1970-74 Ob/Gyn 'residency' UK-NHS Passed exam MRCOG 1973

1974-1978 Clinical Instructor /Physician Specialist Stanford University School of Medicine in Dept Gyn /OB

1978-80 Medical Genetics Fellowship UCSF. 1983 American Board Ob/Gyn Board Certified.

1983 Elected to Fellowship UK FRCOG

1980- 1991Private Practice. Amniocentesis Prenatal Diagnosis-CPDI (California Prenatal DIagnosis Institute.

1993-present. Private Practice. Practice limited to 1st trimester screening/ultrasound imageing

Currently semi-retired.

NPI 1659739472 Currently licenced MD in California and Washington state.


Letter To The Editor: NEJM Oct 20,1983

Letter To The Editor-Prenatal Diagnosis Vol 4,161-162 (1984)

Abstract 585: ASHG mmeeting San Diego 1984

Clinical Case Report .Hum.Genet.(1983) 64:191-193

Letter To The Editor: The Lancet Nov.3, 1984

Correspondence Am.J.Obstetrics Gynecol.Page 500 August 1989

Letter To The Editor: American Journal Ob/Gyn Vol.163,No 2 PP.683-684 1990

Letter To The Editor American Journal Ob/Gyn .''Accuracy of apical four chamber view as screen for congenital heart disease.Vol.163,No.1 Pt.1,PP, 249-250 1990

Letter To The Editor; American Journal Ob/Gyn. Vol.163,No.2, PP. 607-698 August,1990

Letter To The Editor, The Lancet, Vol 337,March 23, 1991

United States Patent US 4,986,274 Jan 22, 1991

220 California Avenue, Suite 106, Palo Alto, CA 94306
949 3rd Street, Blaine, WA 98230
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