DR. JEFFREY LAYNE COX MD
NPI 1124290549
Family Medicine in Powder Springs, GA
About Dr. Jeffrey Layne Cox Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. JEFFREY LAYNE COX MD (NPI 1124290549) is an individual family medicine provider in Powder Springs, Georgia, licensed in Georgia (68396) and active in the NPI registry since March 2008. He is enrolled in Medicare PECOS, is affiliated with Wellstar Kennestone Regional Medical Center, and maintains a secondary practice location in Marietta.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 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
Dr. Jeffrey Layne Cox Md 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 Jeffrey Cox reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Powder Springs, GA 30127
- Reassigned Medicare billing, Georgia enrollment
- 3,885 clinicians in this Medicare group
Atlanta, GA 30305
- Reassigned Medicare billing, Georgia enrollment
- 1,389 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 11
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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Wellstar Kennestone Regional Medical Center
Acute Care Hospitals · Marietta, GAWellstar Paulding Medical Center
Acute Care Hospitals · Hiram, GAWellstar Cobb Medical Center
Acute Care Hospitals · Austell, GAWellstar Douglas Medical Center
Acute Care Hospitals · Douglasville, GAPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 30127 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.
Referred Medical Equipment & Supplies CMS DME claims 3
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 9
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
POWDER SPRINGS, GA 30127
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 Jeffrey Cox's NPI number?
The NPI number for Jeffrey Cox is 1124290549. It was assigned to this individual provider in the NPPES registry on March 25, 2008.
Where is Jeffrey Cox located?
Jeffrey Cox practices at 4250 Brownsville Rd, Powder Springs, GA 30127. The listed phone number is (678) 567-8000.
What is Jeffrey Cox's specialty?
The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.
Is Jeffrey Cox enrolled in Medicare?
Yes. Jeffrey Cox 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 Jeffrey Cox's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Jeffrey Cox reassigns Medicare benefits to 2 organizations: Wellstar Medical Group, LLC (Powder Springs, GA) and The Southeast Permanente Medical Group (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 Jeffrey Cox's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Jeffrey Cox accept?
Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama and Ambetter of North Carolina and 2 other insurers list Jeffrey Cox 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 Jeffrey Cox affiliated with any hospitals?
According to CMS data, Jeffrey Cox is affiliated with Wellstar Kennestone Regional Medical Center, Wellstar Paulding Medical Center, Wellstar Cobb Medical Center and Wellstar Douglas Medical Center.
When was this NPI record last updated?
The NPPES record for Jeffrey Cox was last updated on October 22, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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. Jeffrey Layne Cox, MD · NPI 1124290549
Family Medicine physician in Powder Springs, Georgia. Individual provider, active in the CMS NPPES registry since March 25, 2008.
## Identity
- **NPI:** 1124290549 (Entity type: Individual)
- **Enumerated:** March 25, 2008
- **Primary specialty:** Family Medicine · taxonomy 207Q00000X
- **State license:** 68396 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 4250 BROWNSVILLE RD, Powder Springs, GA 30127
- **Phone:** (678) 567-8000 · **Fax:** (770) 439-3555
## 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): Wellstar Medical Group, LLC (NPI 1093011603, Powder Springs, GA); The Southeast Permanente Medical Group (NPI 1245266956, Atlanta, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** East Tennessee State University Quillen College Of Medicine, class of 2007
## Record status
- **NPPES last updated:** October 22, 2019
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Source: [NPI Profile](https://npiprofile.com/npi/1124290549) · Data from the CMS NPPES public registry.