OrganizationActive
Louis Chen
NPI 1598776171 · Community/Retail Pharmacy · Rosemead, CA
Louis Chen is a Community/Retail Pharmacy organization in Rosemead, CA (NPI 1598776171).
Provider details
- NPI number
- 1598776171
- Entity type
- Organization
- Primary specialty
- Community/Retail PharmacySuppliers
- Organization subpart
- No
- Authorized official
- Louis Chen, Owner(626) 288-8010
Specialties & taxonomies
Suppliers
- Pharmacy333600000X
Suppliers
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
8150 Garvey Ave
Ste 107
Rosemead, CA 91770-2473
Phone: (626) 288-8010
Fax: (626) 288-8505
Street-level locationGet directions
Mailing address
8150 Garvey Ave
Rosemead, CA 91770-2473
Other names (DBA / former)
- Doing business as
- Diamond Square Pharmacy
Registry dates
- Enumerated
- 2006-08-10
- Last updated
- 2009-10-06
Frequently asked questions
- What is Louis Chen's NPI number?
- Louis Chen's National Provider Identifier (NPI) is 1598776171, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Louis Chen?
- Louis Chen is classified in the NPPES registry as Community/Retail Pharmacy (Suppliers).
- Where is Louis Chen located?
- Louis Chen's practice location on file with NPPES is 8150 Garvey Ave, Rosemead, CA 91770-2473.
- What is Louis Chen's phone number?
- The practice phone number listed in the NPPES registry for Louis Chen is (626) 288-8010.
- Who is the authorized official for Louis Chen?
- The authorized official listed on Louis Chen's NPPES record is Louis Chen, Owner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Louis Chen's NPI active?
- Yes — Louis Chen's NPI (1598776171) is active in the NPPES registry as of the last update on 2009-10-06.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.