WILLIAM JACOCKS RIVERS III M.D.
NPI 1639468580
Physical Medicine & Rehabilitation in Marietta, GA
About William Jacocks Rivers Iii M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLIAM JACOCKS RIVERS III M.D. (NPI 1639468580) is an individual physical medicine & rehabilitation provider in Marietta, Georgia, licensed in Georgia (74337) and active in the NPI registry since March 2011. He is enrolled in Medicare PECOS, maintains 3 additional practice locations, and is a graduate of Mercer University School Of Medicine (2011).
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Locations 3
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
William Jacocks Rivers Iii 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 Reassignments
2Medicare enrollment records show William Rivers reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marietta, GA 30062
- Reassigned Medicare billing, Georgia enrollment
- 4 clinicians in this Medicare group
Marietta, GA 30062
- Reassigned Medicare billing, Georgia enrollment
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 3
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.
Referred Medical Equipment & Supplies CMS DME claims 8
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 6
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MARIETTA, GA 30062
MARIETTA, GA 30062
MARIETTA, GA 30062
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 William Rivers's NPI number?
The NPI number for William Rivers is 1639468580. It was assigned to this individual provider in the NPPES registry on March 31, 2011.
Where is William Rivers located?
William Rivers practices at 3225 Shallowford Rd Ste 500, Marietta, GA 30062. The listed phone number is (770) 579-9000.
What is William Rivers's specialty?
The primary specialty registered for this NPI is Physical Medicine & Rehabilitation with taxonomy code 208100000X.
Is William Rivers enrolled in Medicare?
Yes. William Rivers 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 William Rivers's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Rivers reassigns Medicare benefits to 2 organizations: Synergy Rehab PC (Marietta, GA) and William J Rivers III MD LLC (Marietta, 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 William Rivers's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Rivers accept?
Health plans from Ambetter Health, Ambetter from Absolute Total Care, Ambetter of Alabama, Ambetter of North Carolina and Ambetter of Tennessee list William Rivers 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 William Rivers was last updated on November 4, 2021. 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.