Patrick Tso, MD
NPI 1932284601 · Ophthalmology Physician · Fremont, CA
Enrolled with Medicare as Practitioner - Ophthalmology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Patrick Tso, MD is a Ophthalmology Physician provider in Fremont, CA (NPI 1932284601).
Provider details
- NPI number
- 1932284601
- Entity type
- Individual
- Primary specialty
- Ophthalmology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- G83697 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
19 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
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 prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 23 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Latanoprost | 812 | 336 |
| Brimonidine Tartrate | 408 | 176 |
| Prednisolone Acetate | 393 | 270 |
| Dorzolamide Hcl/Timolol Maleatbrand: Dorzolamide-Timolol | 297 | 105 |
| Timolol Maleate | 231 | 83 |
| Polymyxin B Sulf/Trimethoprimbrand: Polymyxin B Sul-Trimethoprim | 209 | 166 |
| Dorzolamide Hcl | 171 | 71 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$48 across 1 record (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
- 2006-10-25
- Last updated
- 2022-01-14
Frequently asked questions
- What is Patrick Tso's NPI number?
- Patrick Tso's National Provider Identifier (NPI) is 1932284601, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Tso's specialty?
- Patrick Tso is listed in the NPPES registry with a primary specialty of Ophthalmology Physician (Allopathic & Osteopathic Physicians).
- Where is Patrick Tso located?
- Patrick Tso's practice location on file with NPPES is 39400 Paseo Padre Pkwy, Fremont, CA 94538-2310.
- What is Patrick Tso's phone number?
- The practice phone number listed in the NPPES registry for Patrick Tso is (510) 795-3000.
- Does Patrick Tso accept Medicare?
- Patrick Tso is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Patrick Tso's NPI active?
- Yes — Patrick Tso's NPI (1932284601) is active in the NPPES registry as of the last update on 2022-01-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.