Dr. John D. Grattan-Smith, MD
- Hospital affiliations
- 4
- Industry payments
- $5,656
- Medical groups
- 4
- State licenses
- 2
- Year NPI issued
- 2006
- Practice address
- 677 Church Street, Marietta, GA 30060
- Practice phone
- Call (770) 793-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Grattan-Smith's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. John D. Grattan-Smith is a diagnostic radiologist in Marietta, Georgia
Dr. Grattan-Smith practices at Wellstar Kennestone Regional Medical Center in Marietta, Georgia, part of Wellstar Health System.
Dr. Grattan-Smith's NPI, 1548234933, was assigned on February 14, 2006. Dr. Grattan-Smith holds Georgia license 038237.
- NPI
- 1548234933NPI Registry (opens in a new tab)
- NPI enumeration date
- February 14, 2006
- NPI status
- Active
- Practice phone
- (770) 793-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. John D. Grattan-Smith practices at Wellstar Kennestone Regional Medical Center in Marietta, Georgia
Dr. Grattan-Smith's primary practice is Wellstar Kennestone Regional Medical Center, at 677 Church Street, Marietta, GA 30060 in Cobb County. The practice phone is (770) 793-5000.
- Wellstar Kennestone Regional Medical Center677 Church Street, Marietta, GA 30060 · Cobb CountyPhone(770) 793-5000
Source: Dmand AI Affiliation Data
Dr. John D. Grattan-Smith is affiliated with 5 sites of care and 4 medical groups
Dr. Grattan-Smith's primary practice is Wellstar Kennestone Regional Medical Center in Marietta, Georgia, part of Wellstar Health System. Dr. Grattan-Smith is also affiliated with Scottish Rite Hospital. The medical group on file is Quantum Radiology. Dmand AI also links Dr. Grattan-Smith to 2 more hospitals, 3 medical groups and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. John D. Grattan-Smith's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Grattan-Smith practices, 5 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Wellstar Kennestone Regional Medical Center | Available with a free account |
| +4 more sites and 3 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Wellstar Health System and 6.2K+ hospitals, with verified contacts in the same login.
Dr. John D. Grattan-Smith is one of 920 diagnostic radiologists in Georgia
Diagnostic radiology is Dr. Grattan-Smith's primary specialty in the NPI Registry, under taxonomy code 2085R0202X. Dmand AI has Dr. Grattan-Smith's licenses on file in 2 states: Georgia and Tennessee.
Specialties and state licenses
- Diagnostic radiology, GeorgiaPrimary
- Pediatric radiology, Tennessee
Diagnostic radiologists near Dr. Grattan-Smith
Counts of diagnostic radiologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. John D. Grattan-Smith's patients have a median age of 12
Across all payers, Dmand AI patient panel data puts Dr. Grattan-Smith's median patient age at 12, with 49% women.
Dr. Grattan-Smith's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 12
Patient panel by sex, all payers
- Women49%
- Men51%
Source: Dmand AI Patient Panel Data
Dr. John D. Grattan-Smith received $5,656 in industry payments from 2016 to 2024
CMS Open Payments shows 8 general payments to Dr. Grattan-Smith from 3 drug and device companies from 2016 to 2024. Speaker and faculty fees make up the largest share, 80% of the total. Philips Electronics North America Corporation paid the most, $5,584.
General payments to Dr. Grattan-Smith by program year, 2016 to 2024
General payments to Dr. Grattan-Smith by kind, 2016 to 2024
- Speaker and faculty fees$4,50080%
- Travel and lodging$81014%
- Food and beverage$3466%
Companies that paid Dr. Grattan-Smith the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Dr. John D. Grattan-Smith's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. John D. Grattan-Smith
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. John D. Grattan-Smith's NPI number?
Dr. John D. Grattan-Smith's NPI number is 1548234933. It was assigned on February 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John D. Grattan-Smith?
Dr. John D. Grattan-Smith is a diagnostic radiologist in Marietta, Georgia. The primary specialty in the NPI Registry is Diagnostic Radiology Physician (taxonomy code 2085R0202X).
Where does Dr. John D. Grattan-Smith practice?
Dr. Grattan-Smith practices at 677 Church Street, Marietta, GA 30060. Dr. Grattan-Smith's primary practice is Wellstar Kennestone Regional Medical Center in Marietta, Georgia, part of Wellstar Health System. Dmand AI also links Dr. Grattan-Smith to 2 hospitals, 3 medical groups and 1 group practice or clinic.
What is Dr. John D. Grattan-Smith's office phone number?
The practice phone on file for Dr. Grattan-Smith is (770) 793-5000.
What is Dr. John D. Grattan-Smith's medical license number?
Dr. Grattan-Smith holds Georgia license 038237, one of the licenses on file in 2 states.
Which states has Dr. John D. Grattan-Smith been licensed in?
Dmand AI has state licenses on file for Dr. Grattan-Smith in Georgia and Tennessee.
Which hospitals is Dr. John D. Grattan-Smith affiliated with?
Dr. Grattan-Smith practices at Wellstar Kennestone Regional Medical Center in Marietta, Georgia. Dr. Grattan-Smith is also affiliated with Scottish Rite Hospital. Dmand AI links Dr. Grattan-Smith to 2 more hospitals.
What medical group is Dr. John D. Grattan-Smith part of?
Dr. Grattan-Smith is linked to Quantum Radiology. Dmand AI links Dr. Grattan-Smith to 3 more medical groups.
Has Dr. John D. Grattan-Smith received payments from drug or device companies?
CMS Open Payments shows $5,656 in general payments to Dr. Grattan-Smith from 3 companies from 2016 to 2024. The largest total came from Philips Electronics North America Corporation.
How long has Dr. John D. Grattan-Smith been practicing?
Dr. Grattan-Smith's NPI was assigned in 2006.
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