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

Mr. John Harney, MD

Individual provider Internal Medicine Physician · NPI 1235272121

Mr. John Harney, MD is an Internal Medicine Physician in Baltimore, Maryland. Practices as a sole proprietor. Licensed in Maryland.

Licensed in
MD
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

4000 Annapolis Rd Ste 202
Baltimore, MD 21227-3600
Phone: (410) 636-9999
Fax: (410) 636-6152
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D0021716 (MD)

Record details

NPI number1235272121
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedFebruary 14, 2007
Last updated in NPPESMarch 7, 2023

Other providers in Baltimore