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

John W Gnann Jr., MD

Individual provider Infectious Disease Physician · NPI 1467498659

John W Gnann Jr., MD is an Internal Medicine in Charleston, South Carolina. Graduated from Duke University School of Medicine in 1978, 48 years ago. Practices with University Medical Associates of the Medical University of South Carol, a 1,640-clinician group, accepts Medicare assignment and offers telehealth. Licensed in Alabama and South Carolina.

Years since qualifying
48
Trained at
Duke University School of Medicine
Licensed in
AL, SC
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Claim this listing Report a problem Suggest an edit

Practice location Address checks out

171 Ashley Ave
Charleston, SC 29425-8908
Phone: (843) 792-1414
Show map & directions

Directions in Google Maps · Apple Maps · OpenStreetMap

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

Specialties & licences

Infectious Disease Physician (primary) Taxonomy 207RI0200X · Licence AL35447 (SC)
Infectious Disease Physician Taxonomy 207RI0200X · Licence 08890 (AL)

Record details

NPI number1467498659
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 22, 2006
Last updated in NPPESOctober 22, 2020
Certification dateOctober 22, 2020

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Also practisesINFECTIOUS DISEASE
Medical schoolDUKE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1978 (48 years in practice)
Group practice University Medical Associates Of The Medical University Of South Carol — 1640 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services

Other providers in Charleston