Emily Tsai, MD
NPI 1831481647 · Diagnostic Radiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Diagnostic Radiology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Emily Tsai, MD is a Diagnostic Radiology Physician provider in Stanford, CA (NPI 1831481647).
Provider details
- NPI number
- 1831481647
- Entity type
- Individual
- Primary specialty
- Diagnostic Radiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- A126063 (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
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
7,536 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) |
|---|---|---|
| X-Ray of Chest, 1 View71045 | 4,761 | $9 |
| X-Ray of Chest, 2 Views71046 | 1,234 | $12 |
| Ct Scan of Chest Without Contrast71250 | 394 | $57 |
| X-Ray of Chest, 2 Views71046 | 268 | $12 |
| Ct Scan of Chest Without Contrast71250 | 258 | $57 |
| Ct Scan of Chest With Contrast71260 | 156 | $62 |
| Ct Scan of Chest With Contrast71260 | 136 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2011-05-11
- Last updated
- 2024-11-11
- Certified
- 2024-11-11
Frequently asked questions
- What is Emily Tsai's NPI number?
- Emily Tsai's National Provider Identifier (NPI) is 1831481647, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Emily Tsai's specialty?
- Emily Tsai is listed in the NPPES registry with a primary specialty of Diagnostic Radiology Physician (Allopathic & Osteopathic Physicians).
- Where is Emily Tsai located?
- Emily Tsai's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Emily Tsai's phone number?
- The practice phone number listed in the NPPES registry for Emily Tsai is (650) 723-4000.
- Does Emily Tsai accept Medicare?
- Emily Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Emily Tsai's NPI active?
- Yes — Emily Tsai's NPI (1831481647) is active in the NPPES registry as of the last update on 2024-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.