Jason Tso, MD
NPI 1578927083 · Cardiovascular Disease Physician · Stanford, CA
Enrolled with Medicare as Practitioner - Cardiovascular Disease (cardiology) · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Jason Tso, MD is a Cardiovascular Disease Physician provider in Stanford, CA (NPI 1578927083).
Provider details
- NPI number
- 1578927083
- Entity type
- Individual
- Primary specialty
- Cardiovascular Disease PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- A153564 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
10 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
1,366 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) |
|---|---|---|
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report Only93010 | 853 | $9 |
| Heart Rhythm Review and Interpretation of Continous External Ekg Over 8-15 Days93248 | 115 | $28 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 94 | $88 |
| Test for Exercise-Induced Heart and Lung Stress94621 | 80 | $75 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 68 | $163 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 13 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 42 | 20 |
| Apixabanbrand: Eliquis | 29 | — |
| Ezetimibe | 29 | 11 |
| Metoprolol Succinate | 29 | 12 |
| Carvedilol | 27 | 12 |
| Losartan Potassium | 27 | — |
| Rosuvastatin Calcium | 27 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2016-04-11
- Last updated
- 2024-04-26
- Certified
- 2024-04-26
Frequently asked questions
- What is Jason Tso's NPI number?
- Jason Tso's National Provider Identifier (NPI) is 1578927083, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jason Tso's specialty?
- Jason Tso is listed in the NPPES registry with a primary specialty of Cardiovascular Disease Physician (Allopathic & Osteopathic Physicians).
- Where is Jason Tso located?
- Jason Tso's practice location on file with NPPES is 300 Pasteur Dr, Stanford, CA 94305-2200.
- What is Jason Tso's phone number?
- The practice phone number listed in the NPPES registry for Jason Tso is (650) 723-4000.
- Does Jason Tso accept Medicare?
- Jason Tso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Jason Tso's NPI active?
- Yes — Jason Tso's NPI (1578927083) is active in the NPPES registry as of the last update on 2024-04-26.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.