Irene Tsai, M.D.
NPI 1447558044 · Diagnostic Radiology Physician · Orange, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Irene Tsai, M.D. is a Diagnostic Radiology Physician provider in Orange, CA (NPI 1447558044).
Provider details
- NPI number
- 1447558044
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A118951 (CA)
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
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
1,772 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) |
|---|---|---|
| Screening 3d Breast Mammography77063 | 389 | $49 |
| Screening Mammography77067 | 389 | $115 |
| Screening 3d Breast Mammography77063 | 140 | $29 |
| Screening Mammography77067 | 140 | $37 |
| Complete Ultrasound Scan of 1 Breast76641 | 100 | $148 |
| Diagnostic Digital Breast Tomosynthesis, Unilateral Or Bilateral (list Separately in Addition to 77065 Or 77066)G0279 | 98 | $50 |
Practice location
Mailing address
Additional practice locations (1)
- Ucla Ronald Reagan Medical Ctr757 Westwood Plaza, Suite 1638Los Angeles, CA 90095-0001Phone: (310) 267-8797
Registry dates
- Enumerated
- 2011-03-05
- Last updated
- 2020-09-22
- Certified
- 2020-09-22
Frequently asked questions
- What is Irene Tsai's NPI number?
- Irene Tsai's National Provider Identifier (NPI) is 1447558044, 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 Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Irene Tsai located?
- Irene Tsai's practice location on file with NPPES is 101 the City Dr S Bldg 30, Orange, CA 92868-3201.
- What is Irene Tsai's phone number?
- The practice phone number listed in the NPPES registry for Irene Tsai is (714) 456-2235.
- 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 (1447558044) is active in the NPPES registry as of the last update on 2020-09-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.