John Tso, M.D.
NPI 1811160377 · Family Medicine Physician · San Jose, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
John Tso, M.D. is a Family Medicine Physician provider in San Jose, CA (NPI 1811160377).
Provider details
- NPI number
- 1811160377
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- A103220 (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
18 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
2,513 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) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 405 | $6 |
| Blood Test, Comprehensive Group of Blood Chemicals80053 | 363 | $10 |
| Blood Test, Lipids (cholesterol and Triglycerides)80061 | 354 | $13 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 241 | $3 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test85027 | 235 | $6 |
| Hemoglobin A1c Level83036 | 222 | $10 |
| Blood Test, Thyroid Stimulating Hormone (tsh) |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 101 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 855 | 249 |
| Atorvastatin Calcium | 628 | 197 |
| Losartan Potassium | 317 | 102 |
| Alendronate Sodium | 293 | 94 |
| Metoprolol Succinate | 277 | 81 |
| Rosuvastatin Calcium | 264 | 88 |
| Metformin Hcl |
Practice location
Mailing address
Registry dates
- Enumerated
- 2008-04-06
- Last updated
- 2017-01-17
Frequently asked questions
- What is John Tso's NPI number?
- John Tso's National Provider Identifier (NPI) is 1811160377, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Tso's specialty?
- John Tso is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is John Tso located?
- John Tso's practice location on file with NPPES is 1870 Lundy Ave, San Jose, CA 95131-1826.
- What is John Tso's phone number?
- The practice phone number listed in the NPPES registry for John Tso is (408) 573-9686.
- Does John Tso accept Medicare?
- John Tso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is John Tso's NPI active?
- Yes — John Tso's NPI (1811160377) is active in the NPPES registry as of the last update on 2017-01-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.