DR. JOHN O. GASTON M.D.
NPI 1184757940
Psychiatry & Neurology - Psychiatry in Marietta, GA
About Dr. John O. Gaston M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN O. GASTON M.D. (NPI 1184757940) is an individual psychiatry provider in Marietta, Georgia, licensed in Georgia (023050) and active in the NPI registry since March 2007. He is enrolled in Medicare PECOS, is affiliated with Grady Memorial Hospital, and maintains 2 additional practice locations.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 2
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Dr. John O. Gaston M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show John Gaston reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Atlanta, GA 30318
- Reassigned Medicare billing, Georgia enrollment
- 322 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Grady Memorial Hospital
Acute Care Hospitals · Atlanta, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30067 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
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.
MARIETTA, GA 30067
MARIETTA, GA 30067
MARIETTA, GA 30067
MARIETTA, GA 30067
MARIETTA, GA 30067
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is John Gaston's NPI number?
The NPI number for John Gaston is 1184757940. It was assigned to this individual provider in the NPPES registry on March 13, 2007.
Where is John Gaston located?
John Gaston practices at 2550 Windy Hill Rd SE Suite 100, Marietta, GA 30067. The listed phone number is (404) 756-1450.
What is John Gaston's specialty?
The primary specialty registered for this NPI is Psychiatry & Neurology, specializing in Psychiatry, with taxonomy code 2084P0800X.
Is John Gaston enrolled in Medicare?
Yes. John Gaston is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for John Gaston's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Gaston reassigns Medicare benefits to Morehouse Healthcare, Inc. (Atlanta, GA). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for John Gaston's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Gaston accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee and 1 other insurer list John Gaston as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is John Gaston affiliated with any hospitals?
According to CMS data, John Gaston is affiliated with Grady Memorial Hospital.
When was this NPI record last updated?
The NPPES record for John Gaston was last updated on October 4, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Dr. John O. Gaston, M.D. · NPI 1184757940
Psychiatry physician in Marietta, Georgia. Individual provider, active in the CMS NPPES registry since March 13, 2007.
## Identity
- **NPI:** 1184757940 (Entity type: Individual)
- **Enumerated:** March 13, 2007
- **Primary specialty:** Psychiatry & Neurology - Psychiatry · taxonomy 2084P0800X
- **State license:** 023050 (Georgia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2550 WINDY HILL RD SE, SUITE 100, Marietta, GA 30067-8665
- **Phone:** (404) 756-1450
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Morehouse Healthcare, Inc. (NPI 1801832324, Atlanta, GA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Yale University School Of Medicine, class of 1977
## Record status
- **NPPES last updated:** October 4, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1184757940) · Data from the CMS NPPES public registry.