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

John D Grattan-Smith, MD

Individual provider Pediatric Radiology Physician · NPI 1548234933

John D Grattan-Smith, MD is a Pediatric Radiology Physician in Marietta, Georgia. Works from 3 locations. Licensed in Georgia and Tennessee.

Licensed in
GA, TN
In the registry since
2006
Specialties on file
3
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

790 Church St NE Ste 400
Marietta, GA 30060-8957
Phone: (770) 405-2976
Fax: (770) 988-0730
Show map & directions

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

Additional practice locations (2)

  • 1001 Johnson Fy Rd Ne, Sandy Springs, GA 30342-1605 — (404) 785-2162
  • 262 Danny Thomas Pl, Memphis, TN 38105-3678 — (888) 226-4343

Specialties & licences

Diagnostic Radiology Physician (primary) Taxonomy 2085R0202X · Licence 038237 (GA)
Pediatric Radiology Physician Taxonomy 2085P0229X · Licence 61912 (TN)
Pediatric Radiology Physician Taxonomy 2085P0229X · Licence 038237 (GA)

Record details

NPI number1548234933
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 14, 2006
Last updated in NPPESJuly 30, 2026
Certification dateJanuary 12, 2024
Mailing addressPo Box 3157, Indianapolis, IN 46206-3157