Tze Lyn Tseeng, M.D.
NPI 1346556891 · Emergency Medicine Physician · Chicago, IL
Enrolled with Medicare as Practitioner - Emergency Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Tze Lyn Tseeng, M.D. is a Emergency Medicine Physician provider in Chicago, IL (NPI 1346556891).
Provider details
- NPI number
- 1346556891
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 125058524 (IL)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
15 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
439 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Emergency Department Visit With High Level of Medical Decision Making99285 | 82 | $173 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 79 | $8 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 71 | $120 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 56 | $180 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 49 | $139 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 7 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Cephalexin | 36 | 35 |
| Azithromycin | 18 | 18 |
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 18 | 18 |
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 17 | 17 |
| Baclofen | 15 | 15 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 14 | 13 |
| Cyclobenzaprine Hcl | 13 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2010-08-23
- Last updated
- 2010-08-23
Frequently asked questions
- What is Tze Lyn Tseeng's NPI number?
- Tze Lyn Tseeng's National Provider Identifier (NPI) is 1346556891, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Tze Lyn Tseeng's specialty?
- Tze Lyn Tseeng is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Tze Lyn Tseeng located?
- Tze Lyn Tseeng's practice location on file with NPPES is 1901 W Harrison St, Chicago, IL 60612-3714.
- What is Tze Lyn Tseeng's phone number?
- The practice phone number listed in the NPPES registry for Tze Lyn Tseeng is (312) 390-2387.
- Does Tze Lyn Tseeng accept Medicare?
- Tze Lyn Tseeng is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Tze Lyn Tseeng's NPI active?
- Yes — Tze Lyn Tseeng's NPI (1346556891) is active in the NPPES registry as of the last update on 2010-08-23.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.