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