Pei Shan Tsai, NP
NPI 1538556170 · Adult Health Nurse Practitioner · West Covina, CA
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Pei Shan Tsai, NP is a Adult Health Nurse Practitioner provider in West Covina, CA (NPI 1538556170).
Provider details
- NPI number
- 1538556170
- Entity type
- Individual
- Primary specialty
- Adult Health Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- 95002257 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
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
11 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 · 10 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 70 | 46 |
| Losartan Potassium | 49 | 27 |
| Metoprolol Succinate | 28 | 15 |
| Amlodipine Besylate | 26 | 15 |
| Alendronate Sodium | 17 | — |
| Omeprazole | 17 | 11 |
| Metformin Hcl | 16 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$550 across 13 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
- 2015-04-21
- Last updated
- 2015-04-21
Frequently asked questions
- What is Pei Shan Tsai's NPI number?
- Pei Shan Tsai's National Provider Identifier (NPI) is 1538556170, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Pei Shan Tsai's specialty?
- Pei Shan Tsai is listed in the NPPES registry with a primary specialty of Adult Health Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Pei Shan Tsai located?
- Pei Shan Tsai's practice location on file with NPPES is 2707 E Valley Blvd Ste 208, West Covina, CA 91792-3197.
- What is Pei Shan Tsai's phone number?
- The practice phone number listed in the NPPES registry for Pei Shan Tsai is (626) 581-0486.
- Does Pei Shan Tsai accept Medicare?
- Pei Shan Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Pei Shan Tsai's NPI active?
- Yes — Pei Shan Tsai's NPI (1538556170) is active in the NPPES registry as of the last update on 2015-04-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.