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

Dr. Jonathan E Efron, MD

Individual provider Colon & Rectal Surgery Physician · NPI 1538144647

Dr. Jonathan E Efron, MD is a Colon & Rectal Surgery Physician in Baltimore, Maryland. Licensed in Arizona and Maryland. Registered with an NPI since 2005.

Licensed in
AZ, MD
In the registry since
2005
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

4940 Eastern Ave
Baltimore, MD 21224-2735
Phone: (410) 550-0100
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence D69531 (MD)
Colon & Rectal Surgery Physician Taxonomy 208C00000X · Licence 33553 (AZ)

Record details

NPI number1538144647
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedDecember 12, 2005
Last updated in NPPESFebruary 10, 2014

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