SIEW MAY WANG MD
NPI 1346771482
Hospitalist in Chicago, IL
About Siew May Wang Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
SIEW MAY WANG MD (NPI 1346771482) is an individual hospitalist provider in Chicago, Illinois, licensed in Illinois (036161289) and active in the NPI registry since March 2017. She is enrolled in Medicare PECOS, is affiliated with Northwestern Memorial Hospital, and maintains a secondary practice location in Chicago.
NPPES Registry Identity
Specialties & Licenses 3
Secondary Practice Location 1
Accepted Insurance
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
Siew May Wang 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 Siew May Wang reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Carol Stream, IL 60122
- Reassigned Medicare billing, Illinois enrollment
- 4,817 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 4
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
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Northwestern Memorial Hospital
Acute Care Hospitals · Chicago, ILPhysician 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.
Referred Medical Equipment & Supplies CMS DME claims 2
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 4
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
CHICAGO, IL 60611
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 Siew May Wang's NPI number?
The NPI number for Siew May Wang is 1346771482. It was assigned to this individual provider in the NPPES registry on March 21, 2017.
Where is Siew May Wang located?
Siew May Wang practices at 251 E Huron St Ste Feinberg, Chicago, IL 60611. The listed phone number is (312) 926-5924.
What is Siew May Wang's specialty?
The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.
Is Siew May Wang enrolled in Medicare?
Yes. Siew May Wang 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 Siew May Wang's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Siew May Wang 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 Siew May Wang's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Siew May Wang accept?
Health plans from CareSource list Siew May Wang as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
Is Siew May Wang affiliated with any hospitals?
According to CMS data, Siew May Wang is affiliated with Northwestern Memorial Hospital.
When was this NPI record last updated?
The NPPES record for Siew May Wang was last updated on October 30, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 23 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.
# Siew May Wang, MD · NPI 1346771482
Hospitalist physician in Chicago, Illinois. Individual provider, active in the CMS NPPES registry since March 21, 2017.
## Identity
- **NPI:** 1346771482 (Entity type: Individual)
- **Enumerated:** March 21, 2017
- **Primary specialty:** Hospitalist · taxonomy 208M00000X
- **State license:** 036161289 (Illinois)
- **Sole proprietor:** No
## Practice location
- **Address:** 251 E HURON ST STE FEINBERG, Chicago, IL 60611-3055
- **Phone:** (312) 926-5924 · **Fax:** (312) 926-6134
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health
- **Bills Medicare through:** Northwestern Medical Faculty Foundation (NPI 1346235314, Carol Stream, IL), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2009
## Record status
- **NPPES last updated:** October 30, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1346771482) · Data from the CMS NPPES public registry.