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

William Mayer Garneau

Individual provider Addiction Medicine (Internal Medicine) Physician · NPI 1629431796

William Mayer Garneau is a Hospitalist in Baltimore, Maryland. Graduated from University of North Carolina at Chapel Hill School of Medicine in 2016, 10 years ago. Practices with Johns Hopkins University, a 705-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Maryland.

Years since qualifying
10
Trained at
University of North Carolina at Chapel Hill School of Medicine
Licensed in
MD
In the registry since
2016
Specialties on file
2

Practice location Address checks out

600 N Wolfe St
Baltimore, MD 21287-0005
Phone: (410) 955-5000
Show map & directions

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

Additional practice locations (2)

  • 601 N Caroline St, Baltimore, MD 21287-0006 — (410) 955-5000
  • 1800 Orleans St, Baltimore, MD 21287-0010 — (410) 955-7911

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence D87025 (MD)
Addiction Medicine (Internal Medicine) Physician Taxonomy 207RA0401X · Licence D0087025 (MD)

Record details

NPI number1629431796
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedApril 5, 2016
Last updated in NPPESJanuary 30, 2026
Certification dateJanuary 30, 2026

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Also practisesADDICTION MEDICINE, INTERNAL MEDICINE
Medical schoolUNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL SCHOOL OF MEDICINE
Graduated 2016 (10 years in practice)
Group practice Johns Hopkins University — 705 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Other providers in Baltimore