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WILLIAM ALEXANDER CLARK MD, MPH
NPI 1821899717
Surgery in Maywood, IL

Active since March 24, 2025PECOS Enrolled
2160 S 1ST AVE BLDG 2840-A, MAYWOOD, IL 60153(708) 216-4533 Get Directions Write a Review

NPPES record last updated: May 20, 2025. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: May 20, 2025, Mar 28, 2025 (2 updates tracked since 2025).

About William Alexander Clark Md, Mph NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

WILLIAM ALEXANDER CLARK MD, MPH (NPI 1821899717) is an individual surgery provider in Maywood, Illinois, licensed in Illinois (125.085748) and active in the NPI registry since March 2025. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1821899717
Entity TypeIndividualMale
Primary Taxonomy208600000X
Provider Legal NameWILLIAM ALEXANDER CLARKCredential: MD, MPH
Location Address2160 S 1ST AVE BLDG 2840-AMaywood, IL 60153-3328
Mailing Address2160 S 1st AveMaywood, IL 60153-3328 · (708) 216-4533
Phone(708) 216-4533
Sole ProprietorYes
Enumeration DateMarch 24, 2025
Last NPPES UpdateMay 20, 20252 updates tracked since enumeration
NPPES CertifiedMay 20, 2025
✔ NPI 1821899717 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtySurgeryAllopathic & Osteopathic Physicians
Taxonomy Code208600000X
License✔ Licensed in IL · 125.085748
Definition
A general surgeon has expertise related to the diagnosis - preoperative, operative and postoperative management - and management of complications of surgical conditions in the following areas: alimentary tract; abdomen; breast, skin and soft tissue; endocrine system; head and neck surgery; pediatric surgery; surgical critical care; surgical oncology; trauma and burns; and vascular surgery. General surgeons increasingly provide care through the use of minimally invasive and endoscopic techniques. Many general surgeons also possess expertise in transplantation surgery, plastic surgery and cardiothoracic surgery.
Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X
2160 S 1ST AVE BLDG 2840-A, Maywood, IL 60153
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

William Alexander Clark Md, Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60153 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$94.06 typical visit price
range $60.08 – $183.39
Typical copayment $23.51 (range $15.02 – $45.84)
Most-billed visit code 99203
Established Patient
$74.80 typical visit price
range $18.97 – $148.12
Typical copayment $18.70 (range $4.74 – $37.03)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

AKPENE SARAH AGAMAH MD, MPH, MBA
Psychiatry & Neurology (Psychiatry)
2160 S 1ST AVE BLDG 2840-A
MAYWOOD, IL 60153
Cook County (708) 216-4533

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 Clark's NPI number?

The NPI number for William Clark is 1821899717. It was assigned to this individual provider in the NPPES registry on March 24, 2025.

Where is William Clark located?

William Clark practices at 2160 S 1st Ave Bldg 2840-A, Maywood, IL 60153. The listed phone number is (708) 216-4533.

What is William Clark's specialty?

The primary specialty registered for this NPI is Surgery with taxonomy code 208600000X.

Is William Clark enrolled in Medicare?

Yes. William Clark is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for William Clark was last updated on May 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 14 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.