Leo Tsai, M.D., PH.D., M.SC.
NPI 1720250228 · Diagnostic Radiology Physician · Boston, MA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Leo Tsai, M.D., PH.D., M.SC. is a Diagnostic Radiology Physician provider in Boston, MA (NPI 1720250228).
Provider details
- NPI number
- 1720250228
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D., PH.D., M.SC.
- Sex
- Male
- Sole proprietor
- Yes
- License
- 236117 (MA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
2,316 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 363 | $89 |
| Ct Scan of Abdomen and Pelvis With Contrast74177 | 246 | $124 |
| X-Ray of Abdomen, 1 View74018 | 187 | $9 |
| Complete Ultrasound Scan Behind Abdominal Cavity76770 | 153 | $36 |
| Mri Scan of Abdomen Before and After Contrast74183 | 147 | $129 |
| Ct Scan of Abdomen and Pelvis Without Contrast74176 | 105 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$539 across 5 records (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
- 2008-03-25
- Last updated
- 2023-07-20
- Certified
- 2023-07-20
Frequently asked questions
- What is Leo Tsai's NPI number?
- Leo Tsai's National Provider Identifier (NPI) is 1720250228, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Leo Tsai's specialty?
- Leo Tsai is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Leo Tsai located?
- Leo Tsai's practice location on file with NPPES is 330 Brookline Ave # Ansin230, Boston, MA 02215-5400.
- What is Leo Tsai's phone number?
- The practice phone number listed in the NPPES registry for Leo Tsai is (617) 667-0278.
- Does Leo Tsai accept Medicare?
- Leo Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Leo Tsai's NPI active?
- Yes — Leo Tsai's NPI (1720250228) is active in the NPPES registry as of the last update on 2023-07-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.