ONE ANESTHESIA PLLC
NPI 1174513246
Anesthesiology in Louisville, KY
About One Anesthesia Pllc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ONE ANESTHESIA PLLC (NPI 1174513246), doing business as Williams And Wagner Psc, is a healthcare organization registered as an anesthesiology in Louisville, Kentucky and active in the NPI registry since October 2005. The organization lists John E. Haas, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Other Names 1
Other Identifiers 4
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
One Anesthesia Pllc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
24Medicare enrollment records show 24 clinicians reassign Medicare billing to One Anesthesia PLLC, which bills Medicare for the services they deliver. Of these, 12 practice within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 3
Nearest to this location (20)
See all 24Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
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 One Anesthesia PLLC's NPI number?
The NPI number for One Anesthesia PLLC is 1174513246. It was assigned to this organization in the NPPES registry on October 28, 2005. The provider was formerly known as Williams And Wagner Psc.
Where is One Anesthesia PLLC located?
One Anesthesia PLLC is located at 100 Mallard Creek Rd Suite 320, Louisville, KY 40207. The listed phone number is (502) 473-2132.
What is One Anesthesia PLLC's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is One Anesthesia PLLC enrolled in Medicare?
Yes. One Anesthesia PLLC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through One Anesthesia PLLC?
According to the CMS Revalidation Reassignment List (October 2026 release), 24 clinicians in 3 Medicare specialties reassign their Medicare billing to One Anesthesia PLLC. A 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 the clinician's services. The largest specialties are Anesthesiology (11), Certified Registered Nurse Anesthetist (CRNA) (7) and Anesthesiology Assistant (6). Of these, 12 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does One Anesthesia PLLC accept?
Health plans from Ambetter Health, Ambetter from Buckeye Health Plan, Ambetter from Meridian, Ambetter of Tennessee and Anthem Blue Cross and Blue Shield list One Anesthesia PLLC 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.
When was this NPI record last updated?
The NPPES record for One Anesthesia PLLC was last updated on March 13, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.
# One Anesthesia Pllc · NPI 1174513246
Anesthesiology organization in Louisville, Kentucky. Organization record, active in the CMS NPPES registry since October 28, 2005.
## Identity
- **NPI:** 1174513246 (Entity type: Organization)
- **Enumerated:** October 28, 2005
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **Organization subpart:** No
- **Authorized official:** John Haas, PRESIDENT
## Practice location
- **Address:** 100 MALLARD CREEK RD, SUITE 320, Louisville, KY 40207-4194
- **Phone:** (502) 473-2132 · **Fax:** (502) 459-0923
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 24 clinicians in 3 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Anesthesiology (11), Certified Registered Nurse Anesthetist (CRNA) (7), Anesthesiology Assistant (6); 12 practice within 10 miles; [full list](https://npiprofile.com/npi/1174513246/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** March 13, 2014
- **Other identifiers:** Medicare PIN IN1709 (IN); Medicare PIN 2766 (KY); Medicaid 74900598 (KY); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1174513246) · Data from the CMS NPPES public registry.