DR. REX B FOSTER III MD
NPI 1790793008
Anesthesiology - Pain Medicine in Lawrenceville, GA
About Dr. Rex B Foster Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. REX B FOSTER III MD (NPI 1790793008) is an individual pain medicine provider in Lawrenceville, Georgia, licensed in Georgia (031424) and active in the NPI registry since August 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 4
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Rex B Foster Iii Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Rex Foster reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Stone Mountain, GA 30087
- Reassigned Medicare billing, Georgia enrollment
- 650 clinicians in this Medicare group
Atlanta, GA 30322
- Reassigned Medicare billing, Georgia enrollment
- 4,840 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.
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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
LAWRENCEVILLE, GA 30046
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 Rex Foster's NPI number?
The NPI number for Rex Foster is 1790793008. It was assigned to this individual provider in the NPPES registry on August 3, 2006.
Where is Rex Foster located?
Rex Foster practices at 1000 Medical Center Blvd, Lawrenceville, GA 30046. The listed phone number is (678) 514-1991.
What is Rex Foster's specialty?
The primary specialty registered for this NPI is Anesthesiology, specializing in Pain Medicine, with taxonomy code 207LP2900X.
Is Rex Foster enrolled in Medicare?
Yes. Rex Foster is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Rex Foster's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Rex Foster reassigns Medicare benefits to 2 organizations: American Anesthesiology Associates Of Georgia, LLC (Stone Mountain, GA) and The Emory Clinic Inc (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 Rex Foster's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Rex Foster 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 Rex Foster 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 Rex Foster was last updated on May 22, 2013. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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. Rex B Foster III, MD · NPI 1790793008
Pain Medicine physician in Lawrenceville, Georgia. Individual provider, active in the CMS NPPES registry since August 3, 2006.
## Identity
- **NPI:** 1790793008 (Entity type: Individual)
- **Enumerated:** August 3, 2006
- **Primary specialty:** Anesthesiology - Pain Medicine · taxonomy 207LP2900X
- **State license:** 031424 (Georgia)
- **Sole proprietor:** No
## Practice location
- **Address:** 1000 MEDICAL CENTER BLVD, Lawrenceville, GA 30046-0000
- **Phone:** (678) 514-1991 · **Fax:** (678) 514-1992
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **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): American Anesthesiology Associates Of Georgia, LLC (NPI 1528068673, Stone Mountain, GA); The Emory Clinic Inc (NPI 1396798229, Atlanta, GA) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 22, 2013
- **Other identifiers:** Medicaid 000389804H (GA); Medicare ID-Type Unspecified 05BDBBD (GA); Medicaid 00389804A (GA); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1790793008) · Data from the CMS NPPES public registry.