ETHAN EMERSON REYNOLDS M.D.
NPI 1124339734
Anesthesiology in Alton, IL
About Ethan Emerson Reynolds M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ETHAN EMERSON REYNOLDS M.D. (NPI 1124339734) is an individual anesthesiology provider in Alton, Illinois, licensed in Missouri (2010020282) and active in the NPI registry since June 2010. He is enrolled in Medicare PECOS, is affiliated with Alton Memorial Hospital, and is a graduate of University Of Tennessee, Hsc, College Of Medicine (2010).
NPPES Registry Identity
Specialties & Licenses
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
Ethan Emerson Reynolds 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 Ethan Reynolds reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Saint Louis, MO 63136
- Reassigned Medicare billing, Illinois and Missouri enrollments
- Medicare enrollment name: Midwest Anesthesia Providers Sc
- 253 clinicians in this Medicare group
Chesterfield, MO 63017
- Reassigned Medicare billing, Missouri enrollment
- 215 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.
Hospital Affiliations CMS Care Compare 2
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Alton Memorial Hospital
Acute Care Hospitals · Alton, ILSsm Health Depaul Hospital St Louis
Acute Care Hospitals · Bridgeton, MOMedicare 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.
ALTON, IL 62002
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 Ethan Reynolds's NPI number?
The NPI number for Ethan Reynolds is 1124339734. It was assigned to this individual provider in the NPPES registry on June 29, 2010.
Where is Ethan Reynolds located?
Ethan Reynolds practices at 1 Memorial Dr Department Of Anesthesiology, Alton, IL 62002. The listed phone number is (423) 620-9324.
What is Ethan Reynolds's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Ethan Reynolds enrolled in Medicare?
Yes. Ethan Reynolds 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 Ethan Reynolds's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Ethan Reynolds reassigns Medicare benefits to 2 organizations: Midwest Anesthesia Providers S.C (Saint Louis, MO) and Physician Specialists Of St Lukes LLC (Chesterfield, 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 Ethan Reynolds's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Ethan Reynolds accept?
Health plans from Oscar Insurance Company list Ethan Reynolds 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 Ethan Reynolds affiliated with any hospitals?
According to CMS data, Ethan Reynolds is affiliated with Alton Memorial Hospital and Ssm Health Depaul Hospital St Louis.
When was this NPI record last updated?
The NPPES record for Ethan Reynolds was last updated on August 18, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Ethan Emerson Reynolds, M.D. · NPI 1124339734
Anesthesiology physician in Alton, Illinois. Individual provider, active in the CMS NPPES registry since June 29, 2010.
## Identity
- **NPI:** 1124339734 (Entity type: Individual)
- **Enumerated:** June 29, 2010
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 2010020282 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 MEMORIAL DR, DEPARTMENT OF ANESTHESIOLOGY, Alton, IL 62002-6722
- **Phone:** (423) 620-9324
## 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:** 2 organizations under Medicare reassignment (form CMS-855R): Midwest Anesthesia Providers S.C (NPI 1295189082, Saint Louis, MO); Physician Specialists Of St Lukes LLC (NPI 1235168410, Chesterfield, MO) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Tennessee, Hsc, College Of Medicine, class of 2010
## Record status
- **NPPES last updated:** August 18, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1124339734) · Data from the CMS NPPES public registry.