JOHN G. ALEXANDER MD
NPI 1477541100
Anesthesiology in Saint Louis, MO
About John G. Alexander Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
JOHN G. ALEXANDER MD (NPI 1477541100) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (2000148561) and active in the NPI registry since October 2005. He is enrolled in Medicare PECOS, is affiliated with Spectrum Health, and is a graduate of University Of Texas Medical School At San Antonio (1995).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 4
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
John G. Alexander 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
5Medicare enrollment records show John Alexander reassigns Medicare billing to 5 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Bridgetown, MO 63044
- Reassigned Medicare billing, Missouri enrollment
- 49 clinicians in this Medicare group
Saint Louis, MO 63136
- Reassigned Medicare billing, Missouri enrollment
- Medicare enrollment name: Midwest Anesthesia Providers Sc
- 230 clinicians in this Medicare group
Saint Louis, MO 63136
- Reassigned Medicare billing, Missouri enrollment
- 19 clinicians in this Medicare group
Mobile, AL 36617
- Reassigned Medicare billing, Alabama enrollment
- 267 clinicians in this Medicare group
Walker, MN 56484
- Reassigned Medicare billing, Minnesota enrollment
- 607 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 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Spectrum Health
Acute Care Hospitals · Grand Rapids, MISanford Bemidji Medical Center
Acute Care Hospitals · Bemidji, MNMedicare 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.
SAINT LOUIS, MO 63117
SAINT LOUIS, MO 63117
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 John Alexander's NPI number?
The NPI number for John Alexander is 1477541100. It was assigned to this individual provider in the NPPES registry on October 6, 2005.
Where is John Alexander located?
John Alexander practices at 6420 Clayton Rd, Saint Louis, MO 63117. The listed phone number is (314) 768-8442.
What is John Alexander's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is John Alexander enrolled in Medicare?
Yes. John Alexander 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 John Alexander's services?
According to the CMS Revalidation Reassignment List (October 2026 release), John Alexander reassigns Medicare benefits to 5 organizations: Aim Anesthesia LLC (Bridgetown, MO), Midwest Anesthesia Providers S.C (Saint Louis, MO), Midwest Anesthesia Associates, P.C. (Saint Louis, MO), Usa Health Anesthesia Billing Services, LLC (Mobile, AL) and Sanford Health Of Northern Minnesota (Walker, MN). 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 John Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is John Alexander affiliated with any hospitals?
According to CMS data, John Alexander is affiliated with Spectrum Health and Sanford Bemidji Medical Center.
When was this NPI record last updated?
The NPPES record for John Alexander was last updated on August 2, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# John G. Alexander, MD · NPI 1477541100
Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since October 6, 2005.
## Identity
- **NPI:** 1477541100 (Entity type: Individual)
- **Enumerated:** October 6, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 2000148561 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 6420 CLAYTON RD, Saint Louis, MO 63117-1811
- **Phone:** (314) 768-8442
## 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:** 5 organizations under Medicare reassignment (form CMS-855R): Aim Anesthesia LLC (NPI 1245685601, Bridgetown, MO); Midwest Anesthesia Providers S.C (NPI 1295189082, Saint Louis, MO); Midwest Anesthesia Associates, P.C. (NPI 1558719617, Saint Louis, MO); Usa Health Anesthesia Billing Services, LLC (NPI 1629635818, Mobile, AL); Sanford Health Of Northern Minnesota (NPI 1902261456, Walker, MN) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Texas Medical School At San Antonio, class of 1995
## Record status
- **NPPES last updated:** August 2, 2016
- **Other identifiers:** Medicare PIN 021013155 (MO); Medicare UPIN H12622 (MO); Medicaid 204982912 (MO); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1477541100) · Data from the CMS NPPES public registry.