Longway Tsai, MD
NPI 1265438113 · General Practice Physician · Artesia, CA
Enrolled with Medicare as Practitioner - General Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Longway Tsai, MD is a General Practice Physician provider in Artesia, CA (NPI 1265438113).
Provider details
- NPI number
- 1265438113
- Entity type
- Individual
- Primary specialty
- General Practice PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- License
- A34395 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2005-06-24
- Last updated
- 2026-05-31
Frequently asked questions
- What is Longway Tsai's NPI number?
- Longway Tsai's National Provider Identifier (NPI) is 1265438113, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Longway Tsai's specialty?
- Longway Tsai is listed in the NPPES registry with a primary specialty of General Practice Physician (Allopathic & Osteopathic Physicians).
- Where is Longway Tsai located?
- Longway Tsai's practice location on file with NPPES is 12225 South St, Artesia, CA 90701-7046.
- What is Longway Tsai's phone number?
- The practice phone number listed in the NPPES registry for Longway Tsai is (562) 865-4141.
- Does Longway Tsai accept Medicare?
- Longway Tsai is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Longway Tsai's NPI active?
- Yes — Longway Tsai's NPI (1265438113) is active in the NPPES registry as of the last update on 2026-05-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.