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
Mailing addressPo Box 64563, Baltimore, MD 21264-4563

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