DR. ALEXANDER ERNEST LEWIS MD
NPI 1710440144
Anesthesiology in Saint Louis, MO
About Dr. Alexander Ernest Lewis Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. ALEXANDER ERNEST LEWIS MD (NPI 1710440144) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (2024000853) and active in the NPI registry since April 2019. He is enrolled in Medicare PECOS and is a graduate of Other (2019).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
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
Dr. Alexander Ernest Lewis 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
4Medicare enrollment records show Alexander Lewis reassigns Medicare billing to 4 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Apple Valley, CA 92308
- Reassigned Medicare billing, California enrollment
- 1,699 clinicians in this Medicare group
San Bernardino, CA 92404
- Reassigned Medicare billing, California enrollment
- 1,216 clinicians in this Medicare group
French Camp, CA 95231
- Reassigned Medicare billing, California enrollment
- Medicare enrollment name: Anesthesia Services Of San Joaquin PC
- 217 clinicians in this Medicare group
Santa Rosa, CA 95404
- Reassigned Medicare billing, California enrollment
- 140 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.
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 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
SAINT LOUIS, MO 63110
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 Lewis's NPI number?
The NPI number for Alexander Lewis is 1710440144. It was assigned to this individual provider in the NPPES registry on April 11, 2019.
Where is Alexander Lewis located?
Alexander Lewis practices at 1 Barnes Jewish Hospital Plz Dept Anesthesiology, Saint Louis, MO 63110. The listed phone number is (800) 862-9980.
What is Alexander Lewis's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Alexander Lewis enrolled in Medicare?
Yes. Alexander Lewis 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 Alexander Lewis's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Lewis reassigns Medicare benefits to 4 organizations: Providence Medical Foundation (Apple Valley, CA), Inpatient Specialists Of California, PC (San Bernardino, CA), Anesthesia Services Of San Joaquin, P.C. (French Camp, CA) and Anesthesia & Analgesia Medical Group, Inc. (Santa Rosa, CA). 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 Lewis's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Alexander Lewis was last updated on April 17, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 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.
# Dr. Alexander Ernest Lewis, MD · NPI 1710440144
Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since April 11, 2019.
## Identity
- **NPI:** 1710440144 (Entity type: Individual)
- **Enumerated:** April 11, 2019
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 2024000853 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 1 BARNES JEWISH HOSPITAL PLZ, DEPT ANESTHESIOLOGY, Saint Louis, MO 63110-1003
- **Phone:** (800) 862-9980 · **Fax:** (314) 362-1185
## 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:** 4 organizations under Medicare reassignment (form CMS-855R): Providence Medical Foundation (NPI 1053616706, Apple Valley, CA); Inpatient Specialists Of California, PC (NPI 1952792475, San Bernardino, CA); Anesthesia Services Of San Joaquin, P.C. (NPI 1366778227, French Camp, CA); Anesthesia & Analgesia Medical Group, Inc. (NPI 1659320984, Santa Rosa, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2019
## Record status
- **NPPES last updated:** April 17, 2025
- **Other identifiers:** Medicaid 200140574 (MO)
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Source: [NPI Profile](https://npiprofile.com/npi/1710440144) · Data from the CMS NPPES public registry.