Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Tze Lyn Stephanie Tseeng, MD

Individual provider Emergency Medicine Physician · NPI 1346556891

Dr. Tze Lyn Stephanie Tseeng, MD practises Emergency Medicine in Chicago, Illinois. Graduated from Chicago College of Medicine and Surgery in 2010, 16 years ago. Practices with Avalon Medical Development Corporation, a 27-clinician group. Licensed in Illinois.

Years since qualifying
16
Trained at
Chicago College of Medicine and Surgery
Licensed in
IL
In the registry since
2010
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1901 W Harrison St
Chicago, IL 60612-3714 Not confirmed with CMS for 16 years — call before visiting
Phone: (312) 390-2387
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Emergency Medicine Physician (primary) Taxonomy 207P00000X · Licence 125058524 (IL)

Record details

NPI number1346556891
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedAugust 23, 2010
Last updated in NPPESAugust 23, 2010

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyEMERGENCY MEDICINE
Medical schoolCHICAGO COLLEGE OF MEDICINE AND SURGERY
Graduated 2010 (16 years in practice)
Group practice Avalon Medical Development Corporation — 27 clinicians
Accepts Medicare assignment Not indicated
Practice locations3 on file with Medicare

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients385
Services billed 530 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician. Those with a page here are linked.

Colleagues at Avalon Medical Development Corporation

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 27 clinicians in the practice; 12 are shown here.

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