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DR. WILLIAM WONG MD
NPI 1679762900
Internal Medicine in Chicago, IL

Active since October 23, 2007PECOS Enrolled
676 N SAINT CLAIR ST STE 900, CHICAGO, IL 60611(312) 926-8282(312) 926-1787 Get Directions Write a Review

NPPES record last updated: October 14, 2020. Verified against the NPPES registry weekly; last sync: November 01, 2026.

About Dr. William Wong Md NPPES

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

DR. WILLIAM WONG MD (NPI 1679762900) is an individual internal medicine provider in Chicago, Illinois, licensed in Illinois (036099813) and active in the NPI registry since October 2007. He is enrolled in Medicare PECOS and maintains a secondary practice location in Chicago.

NPPES Registry Identity

NPI1679762900
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameDR. WILLIAM WONGCredential: MD
Location Address676 N SAINT CLAIR ST STE 900Chicago, IL 60611-2977
Mailing Address676 N Saint Clair St Ste 900Chicago, IL 60611-2977 · (312) 926-8282 · Fax (312) 926-1787
Phone(312) 926-8282
Fax(312) 926-1787
Sole ProprietorNo
Enumeration DateOctober 23, 2007
Last NPPES UpdateOctober 14, 2020
NPPES CertifiedOctober 14, 2020
✔ NPI 1679762900 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in IL · 036099813
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
676 N SAINT CLAIR ST STE 900, Chicago, IL 60611
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Secondary Practice Location 1

Location 12861 N Clark St, 2nd floorChicago, IL 60657-5207 · Phone (312) 742-7372

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. William Wong Md 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.

Medicare Billing Reassignment

Medicare enrollment records show William Wong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Northwestern Medical Faculty Foundation
35 mi
Multi-Specialty
DEPT 5777
Carol Stream, IL 60122
  • Reassigned Medicare billing, Illinois enrollment
  • 4,817 clinicians in this Medicare group
NPI 1346235314 (855) 694-2866

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 60611 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
$138.86 typical visit price
range $60.08 – $183.39
Typical copayment $34.71 (range $15.02 – $45.84)
Most-billed visit code 99204
Established Patient
$105.70 typical visit price
range $18.97 – $148.12
Typical copayment $26.42 (range $4.74 – $37.03)
Most-billed visit code 99214
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 6

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

JILLIAN GALLO RN
Registered Nurse
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-3155
EMILY FIRESTONE RN
Registered Nurse
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-4457
SANTINE TU APN, FNP-BC
Nurse Practitioner
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-8282
RASA TIJUNELIS M.D.
Internal Medicine
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-8282
MOIRA MORPHEW NGUYEN APN, CNP
Nurse Practitioner (Family)
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-8282
MS. LATANJIA DENISE PRYOR RN
Registered Nurse
676 N SAINT CLAIR ST STE 900
CHICAGO, IL 60611
Cook County (312) 926-3155

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 Wong's NPI number?

The NPI number for William Wong is 1679762900. It was assigned to this individual provider in the NPPES registry on October 23, 2007.

Where is William Wong located?

William Wong practices at 676 N Saint Clair St Ste 900, Chicago, IL 60611. The listed phone number is (312) 926-8282.

What is William Wong's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is William Wong enrolled in Medicare?

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

Which organization bills Medicare for William Wong's services?

According to the CMS Revalidation Reassignment List (October 2026 release), William Wong reassigns Medicare benefits to Northwestern Medical Faculty Foundation (Carol Stream, IL). 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 William Wong's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for William Wong was last updated on October 14, 2020. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 6 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.