San Tso, D.O.
NPI 1598876716 · Family Medicine Physician · Stockton, CA
Enrolled with Medicare as Practitioner - Family Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
San Tso, D.O. is a Family Medicine Physician provider in Stockton, CA (NPI 1598876716).
Provider details
- NPI number
- 1598876716
- Entity type
- Individual
- Primary specialty
- Family Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- D.O.
- Sex
- Female
- Sole proprietor
- No
- License
- 20A7328 (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
19 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
1,381 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 493 | $130 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 201 | $92 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 172 | $131 |
| Advance Care Planning, First 30 Minutes99497 | 118 | $82 |
| Administration of Influenza Virus VaccineG0008 | 104 | $27 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'S |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 129 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Amlodipine Besylate | 571 | 164 |
| Losartan Potassium | 538 | 158 |
| Atorvastatin Calcium | 516 | 152 |
| Metformin Hcl | 437 | 130 |
| Levothyroxine Sodium | 383 | 109 |
| Lisinopril | 274 | 86 |
| Metoprolol Succinate |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$2,445 across 144 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
- 2006-08-31
- Last updated
- 2020-03-16
- Certified
- 2020-03-16
Frequently asked questions
- What is San Tso's NPI number?
- San Tso's National Provider Identifier (NPI) is 1598876716, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is San Tso's specialty?
- San Tso is listed in the NPPES registry with a primary specialty of Family Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is San Tso located?
- San Tso's practice location on file with NPPES is 77 W March Ln, Stockton, CA 95207-5723.
- What is San Tso's phone number?
- The practice phone number listed in the NPPES registry for San Tso is (209) 477-5552.
- Does San Tso accept Medicare?
- San Tso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is San Tso's NPI active?
- Yes — San Tso's NPI (1598876716) is active in the NPPES registry as of the last update on 2020-03-16.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.