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

Dr. Benjamin Louis Mazer, MD

Individual provider Anatomic Pathology & Clinical Pathology Physician · NPI 1689022352

Dr. Benjamin Louis Mazer, MD is a Pathology in Baltimore, Maryland. Graduated from University of Rochester School of Medicine and Dentistry in 2016, 10 years ago. Practices with Johns Hopkins University, a 2,855-clinician group. Licensed in Maryland.

Years since qualifying
10
Trained at
University of Rochester School of Medicine and Dentistry
Licensed in
MD
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

600 N Wolfe St
Baltimore, MD 21287-0005
Phone: (410) 955-3580
Fax: (410) 550-0075
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 D88601 (MD)

Record details

NPI number1689022352
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 2, 2016
Last updated in NPPESApril 14, 2021
Certification dateApril 14, 2021

Medicare enrollment

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

Medicare specialtyPATHOLOGY
Medical schoolUNIVERSITY OF ROCHESTER SCHOOL OF MEDICINE AND DENTISTRY
Graduated 2016 (10 years in practice)
Group practice Johns Hopkins University — 2855 clinicians
Accepts Medicare assignment Not indicated
Practice locations6 on file with Medicare

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