Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John Lawrence Frater Jr., MD

Individual provider Hematology (Pathology) Physician · NPI 1407873920

Dr. John Lawrence Frater Jr., MD is a Pathology in Saint Louis, Missouri. Graduated from University of Toledo College of Medicine in 1996, 30 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
30
Trained at
University of Toledo College of Medicine
Licensed in
MO
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1 Barnes Jewish Hospital Plz Div Pa Anatomic And Molecular Path
Saint Louis, MO 63110-1003
Phone: (314) 362-5641
Fax: (314) 362-0369
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Anatomic Pathology & Clinical Pathology Physician (primary) Taxonomy 207ZP0102X · Licence 2003011845 (MO)
Hematology (Pathology) Physician Taxonomy 207ZH0000X · Licence 2003011845 (MO)

Record details

NPI number1407873920
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 17, 2006
Last updated in NPPESApril 17, 2025

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPATHOLOGY
Medical schoolUNIVERSITY OF TOLEDO COLLEGE OF MEDICINE
Graduated 1996 (30 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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