Margaret Tsai, PA-C
NPI 1619328291 · Physician Assistant · City of Industry, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Margaret Tsai, PA-C is a Physician Assistant provider in City of Industry, CA (NPI 1619328291).
Provider details
- NPI number
- 1619328291
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- Yes
- License
- 53484 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
9 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 · 45 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 237 | 88 |
| Amlodipine Besylate | 190 | 59 |
| Omeprazole | 154 | 65 |
| Lorazepam | 120 | 42 |
| Losartan Potassium | 108 | 41 |
| Levocetirizine Dihydrochloride | 81 | 38 |
| Metformin Hcl |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,059 across 30 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
- 2016-06-25
- Last updated
- 2025-08-19
- Certified
- 2025-08-19
Frequently asked questions
- What is Margaret Tsai's NPI number?
- Margaret Tsai's National Provider Identifier (NPI) is 1619328291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Margaret Tsai's specialty?
- Margaret Tsai is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Margaret Tsai located?
- Margaret Tsai's practice location on file with NPPES is 18575 Gale Ave Ste 128, City of Industry, CA 91748-1382.
- What is Margaret Tsai's phone number?
- The practice phone number listed in the NPPES registry for Margaret Tsai is (626) 912-5335.
- Does Margaret Tsai accept Medicare?
- Margaret Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Margaret Tsai's NPI active?
- Yes — Margaret Tsai's NPI (1619328291) is active in the NPPES registry as of the last update on 2025-08-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.