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

Dr. Mark Alan Zaydman, MD

Individual provider Clinical Pathology Physician · NPI 1588017842

Dr. Mark Alan Zaydman, MD is a Pathology in Saint Louis, Missouri. Graduated from Washington University School of Medicine in 2016, 10 years ago. Practices with Washington University, a 2,986-clinician group and accepts Medicare assignment. Licensed in Missouri.

Years since qualifying
10
Trained at
Washington University School of Medicine
Licensed in
MO
In the registry since
2016
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 Lab And Genomic Med
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

Clinical Pathology Physician (primary) Taxonomy 207ZC0006X · Licence 2021030731 (MO)

Record details

NPI number1588017842
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 21, 2016
Last updated in NPPESApril 17, 2025
Certification dateNovember 23, 2021

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolWASHINGTON UNIVERSITY SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Washington University — 2986 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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