DR. WILLIAM POHL CORBETT III MD
NPI 1033613799
Anesthesiology in Saint Louis, MO
About Dr. William Pohl Corbett Iii Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. WILLIAM POHL CORBETT III MD (NPI 1033613799) is an individual anesthesiology provider in Saint Louis, Missouri, licensed in Missouri (2020016811) and active in the NPI registry since March 2018. He is enrolled in Medicare PECOS, is affiliated with St Josephs Hospital, and maintains a secondary practice location in Washington.
NPPES Registry Identity
Specialties & Licenses
Secondary Practice Location 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. William Pohl Corbett Iii 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
2Medicare enrollment records show William Corbett 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 63141
- Reassigned Medicare billing, Missouri enrollment
- 309 clinicians in this Medicare group
Springfield, IL 62769
- Reassigned Medicare billing, Illinois enrollment
- 826 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 4
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
St Josephs Hospital
Acute Care Hospitals · Breese, ILHshs St Elizabeth's Hospital
Acute Care Hospitals · O Fallon, ILMercy Hospital St Louis
Acute Care Hospitals · Saint Louis, MOMercy Hospital Washington
Acute Care Hospitals · Washington, MOOther 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 63141
SAINT LOUIS, MO 63141
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 Corbett's NPI number?
The NPI number for William Corbett is 1033613799. It was assigned to this individual provider in the NPPES registry on March 19, 2018.
Where is William Corbett located?
William Corbett practices at 615 S New Ballas Rd, Saint Louis, MO 63141. The listed phone number is (636) 386-9224.
What is William Corbett's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is William Corbett enrolled in Medicare?
Yes. William Corbett 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 Corbett's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Corbett reassigns Medicare benefits to 2 organizations: Western Anesthesiology Associates, Inc. (Saint Louis, MO) and North American Partners In Anesthesia (illinois), LLC (Springfield, IL). 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 Corbett's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is William Corbett affiliated with any hospitals?
According to CMS data, William Corbett is affiliated with St Josephs Hospital, Hshs St Elizabeth's Hospital, Mercy Hospital St Louis and Mercy Hospital Washington.
When was this NPI record last updated?
The NPPES record for William Corbett was last updated on February 17, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. William Pohl Corbett III, MD · NPI 1033613799
Anesthesiology physician in Saint Louis, Missouri. Individual provider, active in the CMS NPPES registry since March 19, 2018.
## Identity
- **NPI:** 1033613799 (Entity type: Individual)
- **Enumerated:** March 19, 2018
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 2020016811 (Missouri)
- **Sole proprietor:** No
## Practice location
- **Address:** 615 S NEW BALLAS RD, Saint Louis, MO 63141-8221
- **Phone:** (636) 386-9224 · **Fax:** (636) 386-7679
## 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): Western Anesthesiology Associates, Inc. (NPI 1275646754, Saint Louis, MO); North American Partners In Anesthesia (illinois), LLC (NPI 1699032524, Springfield, IL) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2020
## Record status
- **NPPES last updated:** February 17, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1033613799) · Data from the CMS NPPES public registry.