ALEXANDER M WILLIAMS MD
NPI 1417374620
Anesthesiology in Louisville, KY
About Alexander M Williams Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ALEXANDER M WILLIAMS MD (NPI 1417374620) is an individual anesthesiology provider in Louisville, Kentucky, licensed in Kentucky (51619) and active in the NPI registry since March 2014. He is enrolled in Medicare PECOS, is affiliated with Jewish Hospital & St Mary's Healthcare, and is a graduate of University Of Kentucky College Of Medicine (2014).
NPPES Registry Identity
Specialties & Licenses 2
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
Alexander M Williams 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 Reassignment
Medicare enrollment records show Alexander Williams reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Louisville, KY 40202
- Reassigned Medicare billing, Kentucky enrollment
- Medicare enrollment name: University Of Louisville Physicians Inc
- 2,337 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
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.
Jewish Hospital & St Mary's Healthcare
Acute Care Hospitals · Louisville, KYUniversity Of Louisville Hospital
Acute Care Hospitals · Louisville, KYMedicare 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.
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
LOUISVILLE, KY 40202
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 Williams's NPI number?
The NPI number for Alexander Williams is 1417374620. It was assigned to this individual provider in the NPPES registry on March 25, 2014.
Where is Alexander Williams located?
Alexander Williams practices at 530 S Jackson St, Louisville, KY 40202. The listed phone number is (502) 852-5851.
What is Alexander Williams's specialty?
The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.
Is Alexander Williams enrolled in Medicare?
Yes. Alexander Williams 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 organization bills Medicare for Alexander Williams's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Williams reassigns Medicare benefits to University Of Louisville Phyisicians, Inc. (Louisville, KY). The 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 Williams's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Alexander Williams affiliated with any hospitals?
According to CMS data, Alexander Williams is affiliated with Jewish Hospital & St Mary's Healthcare and University Of Louisville Hospital.
When was this NPI record last updated?
The NPPES record for Alexander Williams was last updated on December 20, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.
# Alexander M Williams, MD · NPI 1417374620
Anesthesiology physician in Louisville, Kentucky. Individual provider, active in the CMS NPPES registry since March 25, 2014.
## Identity
- **NPI:** 1417374620 (Entity type: Individual)
- **Enumerated:** March 25, 2014
- **Primary specialty:** Anesthesiology · taxonomy 207L00000X
- **State license:** 51619 (Kentucky)
- **Sole proprietor:** No
## Practice location
- **Address:** 530 S JACKSON ST, Louisville, KY 40202
- **Phone:** (502) 852-5851
## 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:** University Of Louisville Phyisicians, Inc. (NPI 1336707512, Louisville, KY), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** University Of Kentucky College Of Medicine, class of 2014
## Record status
- **NPPES last updated:** December 20, 2018
- **Other identifiers:** Other K202180 (KY); Other 51619 (KY); Medicaid 7100360080 (KY); and 1 more
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Source: [NPI Profile](https://npiprofile.com/npi/1417374620) · Data from the CMS NPPES public registry.