DR. JOHN RYAN MAHONEY DO
NPI 1144616459
Orthopaedic Surgery in Snellville, GA
About Dr. John Ryan Mahoney Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JOHN RYAN MAHONEY DO (NPI 1144616459) is an individual orthopaedic surgery provider in Snellville, Georgia, licensed in Georgia (79435) and active in the NPI registry since April 2015. He is enrolled in Medicare PECOS, is affiliated with Piedmont Eastside Medical Center, and is a graduate of Philadelphia College Of Osteopathic Medicine (2015).
NPPES Registry Identity
Specialties & Licenses 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 Ryan Mahoney Do 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 Reassignments
2Medicare enrollment records show John Mahoney reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Snellville, GA 30078
- Reassigned Medicare billing, Georgia enrollment
- 168 clinicians in this Medicare group
Atlanta, GA 30309
- Reassigned Medicare billing, Georgia enrollment
- 183 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 10
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.
Piedmont Eastside Medical Center
Acute Care Hospitals · Snellville, GAPhysician 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.
Medicare Quality Performance CMS QPP · MIPS
Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
SNELLVILLE, GA 30078
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 Mahoney's NPI number?
The NPI number for John Mahoney is 1144616459. It was assigned to this individual provider in the NPPES registry on April 13, 2015.
Where is John Mahoney located?
John Mahoney practices at 1700 Tree Ln Ste 300, Snellville, GA 30078. The listed phone number is (678) 205-4299.
What is John Mahoney's specialty?
The primary specialty registered for this NPI is Orthopaedic Surgery with taxonomy code 207X00000X.
Is John Mahoney enrolled in Medicare?
Yes. John Mahoney 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 organizations bill Medicare for John Mahoney's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Mahoney reassigns Medicare benefits to 2 organizations: Orthoatlanta, LLC (Snellville, GA) and Piedmont Orthopedics, LLC (Atlanta, GA). Each 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 Mahoney's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does John Mahoney accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 1 other insurer list John Mahoney 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 Mahoney affiliated with any hospitals?
According to CMS data, John Mahoney is affiliated with Piedmont Eastside Medical Center.
When was this NPI record last updated?
The NPPES record for John Mahoney was last updated on May 20, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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 Ryan Mahoney, DO · NPI 1144616459
Orthopaedic Surgery physician in Snellville, Georgia. Individual provider, active in the CMS NPPES registry since April 13, 2015.
## Identity
- **NPI:** 1144616459 (Entity type: Individual)
- **Enumerated:** April 13, 2015
- **Primary specialty:** Orthopaedic Surgery · taxonomy 207X00000X
- **State license:** 79435 (Georgia)
- **Sole proprietor:** Yes
## Practice location
- **Address:** 1700 TREE LN STE 300, Snellville, GA 30078-6747
- **Phone:** (678) 205-4299 · **Fax:** (678) 214-6112
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Orthoatlanta, LLC (NPI 1205591344, Snellville, GA); Piedmont Orthopedics, LLC (NPI 1114317062, Atlanta, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Philadelphia College Of Osteopathic Medicine, class of 2015
## Record status
- **NPPES last updated:** May 20, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1144616459) · Data from the CMS NPPES public registry.