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MR. WILLIAM MASON ANDREWS CAA
NPI 1750104659
Anesthesiologist Assistant in Atlanta, GA

Active since November 07, 2024Accepts Medicare Assignment
1000 JOHNSON FERRY RD, ATLANTA, GA 30342(404) 851-8917(404) 303-3636 Get Directions Write a Review

NPPES record last updated: February 12, 2025. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Feb 12, 2025, Nov 7, 2024 (2 updates tracked since 2024).

About Mr. William Mason Andrews Caa NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MR. WILLIAM MASON ANDREWS CAA (NPI 1750104659) is an individual anesthesiologist assistant in Atlanta, Georgia, licensed in Georgia (12904) and active in the NPI registry since November 2024. He is affiliated with Northside Hospital Cherokee and is a graduate of Other (2024).

NPPES Registry Identity

NPI1750104659
Entity TypeIndividualMale
Primary Taxonomy367H00000X
Provider Legal NameMR. WILLIAM MASON ANDREWSCredential: CAA
Location Address1000 JOHNSON FERRY RDAtlanta, GA 30342-1606
Mailing Address1000 Johnson Ferry RdAtlanta, GA 30342-1606 · (404) 851-8917 · Fax (404) 303-3636
Phone(404) 851-8917
Fax(404) 303-3636
Sole ProprietorNo
Medical School CMSOtherGraduated 2024
Enumeration DateNovember 7, 2024
Last NPPES UpdateFebruary 12, 20252 updates tracked since enumeration
NPPES CertifiedFebruary 12, 2025
✔ NPI 1750104659 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologist AssistantPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code367H00000X
License✔ Licensed in GA · 12904
Definition
An individual certified by the state to perform anesthesia services under the direct supervision of an anesthesiologist. Anesthesiologist Assistants are required to have a bachelor's degree with a premed curriculum prior to entering a two-year anesthesiology assistant program, which is focused upon the delivery and maintenance of anesthesia care as well as advanced patient monitoring techniques. An Anesthesiologist Assistant must work as a member of the anesthesia care team under the direction of a qualified Anesthesiologist.
1000 JOHNSON FERRY RD, Atlanta, GA 30342
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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

Mr. William Mason Andrews Caa 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.

PECOS PAC ID1254861289
PECOS Enrollment IDI20250221001478

Medicare Billing Reassignments

2

Medicare enrollment records show William Andrews reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

North Atlanta Anesthesia Professionals, LLC
Same address
Anesthesiology
1000 JOHNSON FY RD NE
Atlanta, GA 30342
  • Reassigned Medicare billing, Georgia enrollment
  • 571 clinicians in this Medicare group
NPI 1982349296 (855) 709-4535
Western Anesthesiology Associates, Inc.
471 mi
Anesthesiology
615 S NEW BALLAS RD, DEPT. OF ANESTHESIA
Saint Louis, MO 63141
  • Reassigned Medicare billing, Missouri enrollment
  • 309 clinicians in this Medicare group
NPI 1275646754 (636) 386-9224

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 2

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Northside Hospital Cherokee

Acute Care Hospitals · Canton, GA
4/5 CMS rating
OwnershipVoluntary non-profit - Other
CMS Certification Number110008
Location450 Northside Cherokee BoulevardCanton, GA 30115 · Cherokee County
Emergency services Birthing friendly

Northside Hospital

Acute Care Hospitals · Atlanta, GA
3/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number110161
Location1000 Johnson Ferry Road, NEAtlanta, GA 30342 · Fulton County
Birthing friendly

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.

SHELLEY S STATON PAAA
Anesthesiologist Assistant
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (770) 645-9181
TYREL FOSTER MD
Nuclear Medicine
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (404) 851-6323
KEVIN DAVIS
Anesthesiologist Assistant
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (404) 851-8000
CAITLIN MARY YARDE
Nurse Practitioner (Family)
1000 JOHNSON FERRY RD
SANDY SPRINGS, GA 30342
Fulton County (404) 851-6051
NICK TAHER M.D.
Hospitalist
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (404) 851-8000
NORTHSIDE RADIOLOGY ASSOCIATES LLC
Radiology (Diagnostic Radiology)
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (404) 662-2438
TAYEB AHMAD RAHIM
Radiology (Neuroradiology)
1000 JOHNSON FERRY RD
ATLANTA, GA 30342
Fulton County (678) 553-7784
CHRISTOPHER AGOSTI PA
Physician Assistant
1000 JOHNSON FERRY RD
SANDY SPRINGS, GA 30342
Fulton County (404) 851-4000

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 Andrews's NPI number?

The NPI number for William Andrews is 1750104659. It was assigned to this individual provider in the NPPES registry on November 7, 2024.

Where is William Andrews located?

William Andrews practices at 1000 Johnson Ferry Rd, Atlanta, GA 30342. The listed phone number is (404) 851-8917.

What is William Andrews's specialty?

The primary specialty registered for this NPI is Anesthesiologist Assistant with taxonomy code 367H00000X.

Is William Andrews enrolled in Medicare?

Yes. William Andrews 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 Andrews's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Andrews reassigns Medicare benefits to 2 organizations: North Atlanta Anesthesia Professionals, LLC (Atlanta, GA) and Western Anesthesiology Associates, Inc. (Saint Louis, MO). 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 Andrews's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is William Andrews affiliated with any hospitals?

According to CMS data, William Andrews is affiliated with Northside Hospital Cherokee and Northside Hospital.

When was this NPI record last updated?

The NPPES record for William Andrews was last updated on February 12, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 20 months 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.