NPPES file of Aug 9, 2026

Alexander M. Williams, MD

Anesthesiology Physician · Louisville, KY

Alexander M. Williams, MD is an anesthesiology physician with a practice address in Louisville, Kentucky, and NPI 1417374620, issued on Mar 25, 2014. Check the license (Kentucky 51619, as entered in NPPES) on the Kentucky Board of Medical Licensure; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1417374620
Name
Alexander M. Williams
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
51619 KY
Self-reported in NPPES; status is on the state search
Practice location
530 S Jackson St, Louisville, KY 40202
Phone
(502) 852-5851
Enumerated
Mar 25, 2014
Record last updated
Dec 20, 2018 (not updated in 8 years: call before relying on the address or phone)
Medicaid IDs
300019987 IN
7100360080 KY
Medicare enrollment
Enrolled (PECOS I20181019002690); accepts Medicare assignment
Medical or professional school
University Of Kentucky College Of Medicine, 2014
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 530 S Jackson St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Magdy Abaskaron, M.D.Diagnostic Radiology Physician1548264062
  2. Oluwasegun Abe, APRNFamily Nurse Practitioner1316310725
  3. Bianca Adornato, CRNACertified Registered Nurse Anesthetist1336597459
  4. Hiba Al-Dallal, MDAnatomic Pathology & Clinical Pathology Physician1205325610
  5. Mustafa Al-Kawaaz, M.D.Anatomic Pathology & Clinical Pathology Physician1902245038
  6. Houda Alatassi, MDAnatomic Pathology & Clinical Pathology Physician1033266762

Verify Alexander M. Williams in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersKentucky Board of Medical Licensure
    Search for license 51619
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Kentucky license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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The practice group's MIPS final score for 2023 (Medicare payment program): 73.2 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualityout of 100 · 30% of the final score58.7
  2. Costout of 100 · 30%51.9
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $56.56

2 payments; by number, the most common kind was food and beverage; the largest payer was Fisher & Paykel Healthcare Inc. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Alexander Williams$56.56
  2. Specialty average$669.59

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. University OF Louisville Physicians IncLouisville, KY

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Alexander M. Williams among 635 anesthesiology physician records in Kentucky

Alexander M. Williams, MD is one of 635 anesthesiology physician records with a practice address in Kentucky. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2014, is newer than 80% of them.

  • NPI issued2014 · 80% of these records are older, 17% newer
  • In a Medicare fileYes · 73% of these records are
  • In the CMS Doctors and Clinicians fileYes · 64% of these records are
  • Graduated2014 · median 2005 among the 408 with a school on file
  • Record last updated2018 · 65% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207L00000X and a Kentucky practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Anesthesiology Physician providers in Kentucky

There are 635 anesthesiology physician records in Kentucky.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Mahesh Agrawal, M.D.Louisville, KY 402021023080579
  2. Robert Allen, MDLouisville, KY 402021851388763
  3. Erin Atherton, MDLouisville, KY 402021629055421
  4. Howard Cantor, MDLouisville, KY 402021265429484
  5. Dawn Falco, M.D.Louisville, KY 402021316931389
  6. Jaime Guerrero, MDLouisville, KY 402021699748228
  7. Marc Janson, M.D.Louisville, KY 402021164416129
  8. Michelle Le, M.D.Louisville, KY 402021629070214

Common questions

What is Alexander M. Williams, MD's NPI number?

Alexander M. Williams, MD's National Provider Identifier (NPI) is 1417374620, issued on Mar 25, 2014. An NPI identifies a provider in billing; it is not a license.

Where is Alexander M. Williams, MD located?

The NPPES record lists a practice address at 530 S Jackson St, Louisville, KY, 40202. Phone: (502) 852-5851. Providers update this record themselves, so call before visiting.

How can I verify Alexander M. Williams, MD's license?

NPPES lists Kentucky license number 51619, as entered by the provider. Search the Kentucky Board of Medical Licensure at https://web1.ky.gov/GenSearch/LicenseSearch.aspx?AGY=5. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Alexander M. Williams, MD's MIPS final score?

The 2023 MIPS final score is 73.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.