NPPES file of Aug 9, 2026

William Alexander Clark, MD, MPH

Surgery Physician · Maywood, IL

William Alexander Clark, MD, MPH is a surgery physician with a practice address in Maywood, Illinois, and NPI 1821899717, issued on Mar 24, 2025. Check the license (Illinois 125.085748, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1821899717
Name
William Alexander Clark
Credential
MD, MPH
Primary taxonomy
Surgery Physician 208600000X
License number
125.085748 IL
Self-reported in NPPES; status is on the state search
Practice location
2160 S 1St Ave Bldg 2840-A, Maywood, IL 60153
Phone
(708) 216-4533
Enumerated
Mar 24, 2025
Record last updated
May 20, 2025
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest surgery physician records → All 1,520 in Illinois → Look up another NPI →

Also registered at 2160 S 1St Ave Bldg 2840-A

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

  1. Akpene Agamah, MD, MPH, MBAPsychiatry Physician1700536489

Verify William Alexander Clark in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
    Search for license 125.085748    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 Illinois license search

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William Alexander Clark among 1,520 surgery physician records in Illinois

William Alexander Clark, MD, MPH is one of 1,520 surgery physician records with a practice address in Illinois. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2025, is newer than 94% of them.

  • NPI issued2025 · 94% of these records are older, 2% newer
  • In a Medicare fileNo · 66% of these records are
  • In the CMS Doctors and Clinicians fileNo · 43% of these records are
  • Record last updated2025 · 49% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208600000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

97 surgery physician records list a practice address in Maywood

They are 97 of the 2,572 NPPES records with a practice address in Maywood, and 1,520 surgery physician records in Illinois. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 1,520 in Illinois → Every provider in Maywood → Surgery Physician nationwide →

The 8 surgery physician records with the nearest ZIP codes

  1. Gerard Abood, M.DMaywood, IL 601531629237227
  2. Gerard Aranha, MDMaywood, IL 601531518933068
  3. Marshall BakerMaywood, IL 601531720039803
  4. Steven Dejong, MDMaywood, IL 601531992779086
  5. Luis Fernandez, MDMaywood, IL 601531497711196
  6. Constantine Godellas, M.D.Maywood, IL 601531740251222
  7. Rasheed Hammadeh, MDMaywood, IL 601531942270392
  8. Francis Harford, MDMaywood, IL 601531003883828

Common questions

What is William Alexander Clark, MD, MPH's NPI number?

William Alexander Clark, MD, MPH's National Provider Identifier (NPI) is 1821899717, issued on Mar 24, 2025. An NPI identifies a provider in billing; it is not a license.

Where is William Alexander Clark, MD, MPH located?

The NPPES record lists a practice address at 2160 S 1St Ave Bldg 2840-A, Maywood, IL, 60153. Phone: (708) 216-4533. Providers update this record themselves, so call before visiting.

How can I verify William Alexander Clark, MD, MPH's license?

NPPES lists Illinois license number 125.085748, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

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

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.