ALEXANDER R ERWIN
NPI 1386111656
Anesthesiologist Assistant in Marietta, GA
About Alexander R Erwin NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER R ERWIN (NPI 1386111656) is an individual anesthesiologist assistant in Marietta, Georgia and active in the NPI registry since October 2018. He is affiliated with Wellstar Kennestone Regional Medical Center, maintains 3 additional practice locations, and is a graduate of Other (2018).
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 (PECOS)
Alexander R Erwin is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
3Medicare enrollment records show Alexander Erwin reassigns Medicare billing to 3 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Marietta, GA 30060
- Reassigned Medicare billing, Georgia enrollment
- 3,885 clinicians in this Medicare group
Kennesaw, GA 30152
- Reassigned Medicare billing, Georgia enrollment
- 629 clinicians in this Medicare group
Woodstock, GA 30189
- Reassigned Medicare billing, Georgia enrollment
- Medicare enrollment name: Georgia Anesthesiologists, P.C.
- 131 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.
Hospital Affiliations CMS Care Compare
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, GAMedicare 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.
MARIETTA, GA 30060
MARIETTA, GA 30060
MARIETTA, GA 30060
MARIETTA, GA 30060
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 Alexander Erwin's NPI number?
The NPI number for Alexander Erwin is 1386111656. It was assigned to this individual provider in the NPPES registry on October 25, 2018.
Where is Alexander Erwin located?
Alexander Erwin practices at 677 Church St NE, Marietta, GA 30060. The listed phone number is (770) 794-0477.
What is Alexander Erwin's specialty?
The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.
Is Alexander Erwin enrolled in Medicare?
Yes. Alexander Erwin is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Alexander Erwin's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Erwin reassigns Medicare benefits to 3 organizations: Wellstar Medical Group, LLC (Marietta, GA), Mak Anesthesia Holdings LLC (Kennesaw, GA) and Georgia Anesthesiologists, PC (Woodstock, 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 Alexander Erwin's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Alexander Erwin accept?
Health plans from Alliant Health Plans, Inc. and Oscar Health list Alexander Erwin 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 Alexander Erwin affiliated with any hospitals?
According to CMS data, Alexander Erwin is affiliated with Wellstar Kennestone Regional Medical Center.
When was this NPI record last updated?
The NPPES record for Alexander Erwin was last updated on October 25, 2018. 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.
# Alexander R Erwin · NPI 1386111656
Anesthesiologist Assistant physician in Marietta, Georgia. Individual provider, active in the CMS NPPES registry since October 25, 2018.
## Identity
- **NPI:** 1386111656 (Entity type: Individual)
- **Enumerated:** October 25, 2018
- **Primary specialty:** Anesthesiologist Assistant · taxonomy 367H00000X
- **Sole proprietor:** No
## Practice location
- **Address:** 677 CHURCH ST NE, Marietta, GA 30060-1101
- **Phone:** (770) 794-0477
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Bills Medicare through:** 3 organizations under Medicare reassignment (form CMS-855R): Wellstar Medical Group, LLC (NPI 1083027320, Marietta, GA); Mak Anesthesia Holdings LLC (NPI 1912452939, Kennesaw, GA); Georgia Anesthesiologists, PC (NPI 1740299197, Woodstock, GA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** October 25, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1386111656) · Data from the CMS NPPES public registry.