Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

JOHN D GRATTAN-SMITH MD
NPI 1548234933
Radiology - Diagnostic Radiology in Marietta, GA

Q: What is John Grattan-smith's NPI number?

The NPI number for John Grattan-smith is 1548234933. It was assigned to this individual provider in the NPPES registry on February 14, 2006.

Q: What is John Grattan-smith's specialty?

The primary specialty registered for this NPI is Radiology, specializing in Diagnostic Radiology, with taxonomy code 2085R0202X.

Active since February 14, 2006PECOS Enrolled

790 CHURCH ST NE STE 400, MARIETTA, GA 30060(770) 405-2976(770) 988-0730 Get Directions Write a Review

NPPES record last updated: July 30, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

Record update history: Jul 30, 2026, Jan 8, 2021 (2 updates tracked since 2021).

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About John D Grattan-smith Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

JOHN D GRATTAN-SMITH MD (NPI 1548234933) is an individual diagnostic radiology provider in Marietta, Georgia, licensed in Georgia (038237) and active in the NPI registry since February 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548234933

Entity TypeIndividualMale

Primary Taxonomy2085R0202X

Provider Legal NameJOHN D GRATTAN-SMITHCredential: MD

Location Address790 CHURCH ST NE STE 400Marietta, GA 30060-8957

Mailing AddressPo Box 3157Indianapolis, IN 46206-3157 · (770) 405-2976

Phone(770) 405-2976

Fax(770) 988-0730

Sole ProprietorNo

Enumeration DateFebruary 14, 2006

Last NPPES UpdateJuly 30, 20262 updates tracked since enumeration

NPPES CertifiedJanuary 12, 2024

✔ NPI 1548234933 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyRadiology · Diagnostic RadiologyAllopathic & Osteopathic Physicians

Taxonomy Code2085R0202X

License✔ Licensed in GA · 038237

Definition

A radiologist who utilizes x-ray, radionuclides, ultrasound and electromagnetic radiation to diagnose and treat disease.

Also ListedRadiology · Pediatric RadiologyTaxonomy 2085P0229X · License 61912 (TN), 038237 (GA)

790 CHURCH ST NE STE 400, Marietta, GA 30060

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Other Identifiers 1

Medicaid000615733GA

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc..Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

John D Grattan-smith Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 30060 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$88.06 typical visit price

range $56.84 – $172.43

Typical copayment $22.01 (range $14.21 – $43.10)

Most-billed visit code 99203

Established Patient

$70.85 typical visit price

range $18.22 – $140.40

Typical copayment $17.71 (range $4.55 – $35.10)

Most-billed visit code 99213

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

DR. CHRIS CHAN MOO SUNG

Radiology (Vascular & Interventional Radiology)