Stephanie Hsiao, M.D.
NPI 1245650456 · Advanced Heart Failure and Transplant Cardiology Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Stephanie Hsiao, M.D. is a Advanced Heart Failure and Transplant Cardiology Physician provider in Stanford, CA (NPI 1245650456).
Provider details
- NPI number
- 1245650456
- Entity type
- Individual
- Primary specialty
- Advanced Heart Failure and Transplant Cardiology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A141281 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
12 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
435 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) |
|---|---|---|
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 204 | $133 |
| Critical Care, First 30-74 Minutes99291 | 82 | $233 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 67 | $88 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 32 | $164 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 19 | $55 |
| Hospital Discharge Day Management, More Than 30 Minutes99239 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 10 distinct drugs on file.
| Drug | Part D claims (2024) |
|---|---|
| Sirolimus | 31 |
| Tacrolimus | 23 |
| Amlodipine Besylate | 22 |
| Tacrolimusbrand: Envarsus Xr | 20 |
| Rosuvastatin Calcium | 17 |
| Lisinopril | 17 |
| Pantoprazole Sodium | 15 |
| Chlorthalidone | 13 |
| Mycophenolate Mofetil | 11 |
| Alirocumabbrand: Praluent Pen |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$160 across 3 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
Additional practice locations (1)
- 2351 Clay StSuite 380San Francisco, CA 94115-1931Phone: (415) 600-3954
Registry dates
- Enumerated
- 2014-04-27
- Last updated
- 2025-03-26
- Certified
- 2025-03-26
Frequently asked questions
- What is Stephanie Hsiao's NPI number?
- Stephanie Hsiao's National Provider Identifier (NPI) is 1245650456, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Stephanie Hsiao's specialty?
- Stephanie Hsiao is listed in the NPPES registry with a primary specialty of Advanced Heart Failure and Transplant Cardiology Physician (Allopathic & Osteopathic Physicians).
- Where is Stephanie Hsiao located?
- Stephanie Hsiao's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Stephanie Hsiao's phone number?
- The practice phone number listed in the NPPES registry for Stephanie Hsiao is (650) 723-4000.
- Does Stephanie Hsiao accept Medicare?
- Stephanie Hsiao is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Stephanie Hsiao's NPI active?
- Yes — Stephanie Hsiao's NPI (1245650456) is active in the NPPES registry as of the last update on 2025-03-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.