MARISSA ALLEN MACDONALD
NPI 1447040217
Nurse Practitioner - Primary Care in Snellville, GA
About Marissa Allen Macdonald NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARISSA ALLEN MACDONALD (NPI 1447040217) is an individual primary care provider in Snellville, Georgia, licensed in Georgia (APRN-NP315110) and active in the NPI registry since May 2025. She is enrolled in Medicare PECOS, maintains 4 additional practice locations, and is a graduate of Emory University School Of Medicine (2024).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 4
Group Practice 1
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
Marissa Allen Macdonald 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 Marissa Macdonald reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Snellville, GA 30078
- Reassigned Medicare billing, Georgia enrollment
- 50 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.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30078 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
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
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 Marissa Macdonald's NPI number?
The NPI number for Marissa Macdonald is 1447040217. It was assigned to this individual provider in the NPPES registry on May 7, 2025.
Where is Marissa Macdonald located?
Marissa Macdonald practices at 2764 W Main St, Snellville, GA 30078. The listed phone number is (770) 978-3388.
What is Marissa Macdonald's specialty?
The primary specialty registered for this NPI is Nurse Practitioner, specializing in Primary Care, with taxonomy code 363LP2300X.
Is Marissa Macdonald enrolled in Medicare?
Yes. Marissa Macdonald 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 Marissa Macdonald's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marissa Macdonald reassigns Medicare benefits to Gwinnett Clinic, Ltd (Snellville, 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 Marissa Macdonald's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Marissa Macdonald accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list Marissa Macdonald 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.
When was this NPI record last updated?
The NPPES record for Marissa Macdonald was last updated on January 7, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 months 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.
# Marissa Allen Macdonald · NPI 1447040217
Primary Care physician in Snellville, Georgia. Individual provider, active in the CMS NPPES registry since May 7, 2025.
## Identity
- **NPI:** 1447040217 (Entity type: Individual)
- **Enumerated:** May 7, 2025
- **Primary specialty:** Nurse Practitioner - Primary Care · taxonomy 363LP2300X
- **State license:** APRN-NP315110 (Georgia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 2764 W MAIN ST, Snellville, GA 30078-5708
- **Phone:** (770) 978-3388 · **Fax:** (770) 978-0807
## 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:** Gwinnett Clinic, Ltd (NPI 1073524559, Snellville, GA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Emory University School Of Medicine, class of 2024
## Record status
- **NPPES last updated:** January 7, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1447040217) · Data from the CMS NPPES public registry.