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Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. LEWIS LI-YEN HSU M.D., PH.D.
NPI 1851357388
Pediatrics - Pediatric Hematology-Oncology in Chicago, IL

Active since April 24, 2006PECOS Enrolled
87.08/100
CMS Quality Rating
1801 W TAYLOR ST, SUITE 2E, CHICAGO, IL 60612(312) 996-6143(312) 413-9484 Get Directions Write a Review

NPPES record last updated: September 29, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Sep 29, 2026, Jan 5, 2022 (2 updates tracked since 2022).

About Dr. Lewis Li-yen Hsu M.d., Ph.d. NPPES

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

DR. LEWIS LI-YEN HSU M.D., PH.D. (NPI 1851357388) is an individual pediatric hematology-oncology provider in Chicago, Illinois, licensed in Illinois (036128130) and active in the NPI registry since April 2006. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1851357388
Entity TypeIndividualMale
Primary Taxonomy2080P0207X
Provider Legal NameDR. LEWIS LI-YEN HSUCredential: M.D., PH.D.
Location Address1801 W TAYLOR ST, SUITE 2EChicago, IL 60612-4795
Mailing Address840 S Wood St, Mc 856Chicago, IL 60612-4325 · (312) 996-6143
Phone(312) 996-6143
Fax(312) 413-9484
Sole ProprietorNo
Enumeration DateApril 24, 2006
Last NPPES UpdateSeptember 29, 20262 updates tracked since enumeration
NPPES CertifiedJanuary 5, 2022
✔ NPI 1851357388 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatrics · Pediatric Hematology-OncologyAllopathic & Osteopathic Physicians
Taxonomy Code2080P0207X
Licenses✔ Licensed in IL · 036128130✔ Licensed in PA · MD044248L✔ Licensed in DC · MD037835
Definition
A pediatrician trained in the combination of pediatrics, hematology and oncology to recognize and manage pediatric blood disorders and cancerous diseases.
Also ListedPediatricsTaxonomy 208000000X · License 036128130 (IL)
1801 W TAYLOR ST, Chicago, IL 60612
Open in Google Maps ↗

Other Identifiers 3

Medicaid0019667210001PA
Medicaid00617746GA
Medicaid617746BGA

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Lewis Li-yen Hsu M.d., Ph.d. 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 Reassignments

2

Medicare enrollment records show Lewis Hsu reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

The Board Of Trustees Of The University Of Illinois
Same address
Ophthalmology
1855 W TAYLOR ST
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • 2,127 clinicians in this Medicare group
NPI 1720208135 (312) 996-0933
Cook County
0.3 mi
Family Medicine
605 S WOLCOTT AVE, SUITE 605
Chicago, IL 60612
  • Reassigned Medicare billing, Illinois enrollment
  • 1,047 clinicians in this Medicare group
NPI 1912063439 (312) 864-4649

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

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

87.08/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Quality70.79
Promoting Interoperability100
Improvement Activities40
Cost52.82

Other Providers at the Same Location NPPES 20

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

MATTHEW BRENNER-JEDWABNIK PA-C
Physician Assistant
1801 W TAYLOR ST
CHICAGO, IL 60612
Cook County (847) 207-6228
DR. MELANI LIGHTER MD
Surgery
1801 W TAYLOR ST
CHICAGO, IL 60612
Cook County (312) 355-4300
JAMES STEVEN FEINBERG MD
Dermatology (Procedural Dermatology)
1801 W TAYLOR ST, 3E
CHICAGO, IL 60612
Cook County (312) 996-1193
MRS. KIMBERLY YORMARK MS, AGACNP
Nurse Practitioner (Acute Care)
1801 W TAYLOR ST
CHICAGO, IL 60612
Cook County (866) 600-2273
DR. ANDERS MELLGREN MD
Colon & Rectal Surgery
1801 W TAYLOR ST, 3F OCC
CHICAGO, IL 60612
Cook County (312) 355-4300
MILENA J. LYON M.D.
Dermatology
1801 W TAYLOR ST, SUITE 3E
CHICAGO, IL 60612
Cook County (312) 996-8666
MR. DANIEL ROBERT BAMRICK-FERNANDEZ MD, MBA
Dermatology
1801 W TAYLOR ST
CHICAGO, IL 60612
Cook County (312) 996-0106
PROF. VATSLA DADHWAL MD
Obstetrics & Gynecology (Maternal & Fetal Medicine)
1801 W TAYLOR ST
CHICAGO, IL 60612
Cook County (312) 413-7500

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 Lewis Hsu's NPI number?

The NPI number for Lewis Hsu is 1851357388. It was assigned to this individual provider in the NPPES registry on April 24, 2006.

Where is Lewis Hsu located?

Lewis Hsu practices at 1801 W Taylor St Suite 2E, Chicago, IL 60612. The listed phone number is (312) 996-6143.

What is Lewis Hsu's specialty?

The primary specialty registered for this NPI is Pediatrics, specializing in Pediatric Hematology-Oncology, with taxonomy code 2080P0207X.

Is Lewis Hsu enrolled in Medicare?

Yes. Lewis Hsu is registered in the Medicare PECOS enrollment system.

Which organizations bill Medicare for Lewis Hsu's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Lewis Hsu reassigns Medicare benefits to 2 organizations: The Board Of Trustees Of The University Of Illinois (Chicago, IL) and Cook County (Chicago, IL). Each 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 Lewis Hsu'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 Lewis Hsu was last updated on September 29, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 days 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.