Irene Tsai, MD
NPI 1558000497 · Internal Medicine Physician · Philadelphia, PA
Enrolled with Medicare as Order and Referring Only - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irene Tsai, MD is a Internal Medicine Physician provider in Philadelphia, PA (NPI 1558000497).
Provider details
- NPI number
- 1558000497
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- MT226793 (PA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
4 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 9 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Atorvastatin Calcium | 23 |
| Amlodipine Besylate | 21 |
| Valsartan | 18 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 16 |
| Lisinopril | 13 |
| Mirtazapine | 13 |
| Albuterol Sulfatebrand: Ventolin Hfa | 13 |
| Nifedipinebrand: Nifedipine Er | 11 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$27 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2022-05-31
- Last updated
- 2023-01-16
- Certified
- 2022-08-08
Frequently asked questions
- What is Irene Tsai's NPI number?
- Irene Tsai's National Provider Identifier (NPI) is 1558000497, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Irene Tsai's specialty?
- Irene Tsai is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Irene Tsai located?
- Irene Tsai's practice location on file with NPPES is 3401 N Broad St, Philadelphia, PA 19140-5103.
- What is Irene Tsai's phone number?
- The practice phone number listed in the NPPES registry for Irene Tsai is (445) 235-9488.
- Does Irene Tsai accept Medicare?
- Irene Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Irene Tsai's NPI active?
- Yes — Irene Tsai's NPI (1558000497) is active in the NPPES registry as of the last update on 2023-01-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.