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

Dr. Robert Stewart Hagan, MD, PHD

Individual provider Internal Medicine Physician · NPI 1265635858

Dr. Robert Stewart Hagan, MD, PHD is a Pulmonary Disease in Baltimore, Maryland. Graduated from Harvard Medical School in 2007, 19 years ago. Practices with University of North Carolina at Chapel Hill, a 2,079-clinician group and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
19
Trained at
Harvard Medical School
Licensed in
MD
In the registry since
2007
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
PHD — Doctor of Philosophy
A research doctorate. In healthcare it usually sits alongside a clinical licence.

See every abbreviation used in this directory →

Practice location Partly verified

Some contact details are missing from the federal record.

Johns Hopkins Medicine 600 N Wolfe St
Baltimore, MD 21287-0001
Phone: (410) 955-7963
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 22260 (MD)

Record details

NPI number1265635858
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , PHD
Sole proprietorYes
NPI enumeratedJune 9, 2007
Last updated in NPPESApril 5, 2012

Medicare enrollment

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

Medicare specialtyPULMONARY DISEASE
Also practisesINTERNAL MEDICINE
Medical schoolHARVARD MEDICAL SCHOOL
Graduated 2007 (19 years in practice)
Group practice University Of North Carolina At Chapel Hill — 2079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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