Tze Lyn Stephanie Tseeng, M.D.
Emergency Medicine Physician · Chicago, IL
Tze Lyn Stephanie Tseeng, M.D. is an emergency medicine physician with a practice address in Chicago, Illinois, and NPI 1346556891, issued on Aug 23, 2010. Check the license (Illinois 125058524, as entered in NPPES) on the Illinois Department of Financial and Professional Regulation; the Medicare figures below come from public CMS files.
- Name
- Tze Lyn Stephanie Tseeng
- Credential
- M.D.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 125058524 IL
Self-reported in NPPES; status is on the state search - Practice location
- 1901 W Harrison St, Chicago, IL 60612
- Phone
- (312) 390-2387
- Enumerated
- Aug 23, 2010
- Record last updated
- Aug 23, 2010 (not updated in 16 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20140822001933); accepts Medicare assignment
- Medical or professional school
- Chicago College Of Medicine And Surgery, 2010
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 3,291 in Illinois → Look up another NPI →
Also registered at 1901 W Harrison St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Tze Lyn Stephanie Tseeng in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersIllinois Department of Financial and Professional Regulation
Search for license 125058524Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
38% more Medicare Part D claims than the average emergency medicine physician in 2024
311 Medicare Part D claims for 229 beneficiaries, against an average of 226 among the 54,106 providers of this specialty who prescribed in Part D. 23 claims were for opioids.
Most prescribed
- Cephalexin36 claims
- Azithromycin18 claims
- Paxlovid18 claims
- Hydrocodone-Acetaminophen17 claims
- Baclofen15 claims
- Amoxicillin-Clavulanate Potass14 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 85.2 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Bills Medicare through 2 group practices
- Anaheim Emergency Medical GroupAnaheim, CA
- Regents OF The University OFOrange, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tze Lyn Stephanie Tseeng among 3,291 emergency medicine physician records in Illinois
Tze Lyn Stephanie Tseeng, M.D. is one of 3,291 emergency medicine physician records with a practice address in Illinois. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2010, is newer than 47% of them.
- NPI issued2010 · 47% of these records are older, 50% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated2010 · median 2012 among the 1,867 with a school on file
- Record last updated2010 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207P00000X and a Illinois practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,310 emergency medicine physician records list a practice address in Chicago
They are 1,310 of the 63,379 NPPES records with a practice address in Chicago, and 3,291 emergency medicine physician records in Illinois.
All 3,291 in Illinois → Every provider in Chicago → Emergency Medicine Physician nationwide →
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- Marilyn Hallock, M.D.Chicago, IL 606121336110691
- Mumtaz Husain, M.D.Chicago, IL 606121891761953
- Paula Oldeg, M.D.Chicago, IL 606121568438687
Common questions
What is Tze Lyn Stephanie Tseeng, M.D.'s NPI number?
Tze Lyn Stephanie Tseeng, M.D.'s National Provider Identifier (NPI) is 1346556891, issued on Aug 23, 2010. An NPI identifies a provider in billing; it is not a license.
Where is Tze Lyn Stephanie Tseeng, M.D. located?
The NPPES record lists a practice address at 1901 W Harrison St, Chicago, IL, 60612. Phone: (312) 390-2387. Providers update this record themselves, so call before visiting.
How can I verify Tze Lyn Stephanie Tseeng, M.D.'s license?
NPPES lists Illinois license number 125058524, as entered by the provider. Search the Illinois Department of Financial and Professional Regulation at https://idfpr.illinois.gov/checklicense.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tze Lyn Stephanie Tseeng, M.D. prescribe under Medicare Part D?
In 2024, Tze Lyn Stephanie Tseeng, M.D. had 311 Medicare Part D claims for 229 beneficiaries; the average among emergency medicine physician prescribers was 226. Part D covers Medicare prescriptions only.
What is Tze Lyn Stephanie Tseeng, M.D.'s MIPS final score?
The 2023 MIPS final score is 85.2 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.