LOUIS CAI MD INC
NPI 1184560047
Ophthalmology - Retina Specialist in Sunnyvale, CA
About Louis Cai Md Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
LOUIS CAI MD INC (NPI 1184560047), doing business as Cai Retina, is a healthcare organization registered as a retina specialist in Sunnyvale, California and active in the NPI registry since April 2026. The organization lists Louis Cai, Ceo, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Louis Cai Md Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
Medicare enrollment records show 1 clinician reassigns Medicare billing to Louis Cai MD Inc, which bills Medicare for the services this clinician delivers.
Clinician (1)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Louis Cai MD Inc's NPI number?
The NPI number for Louis Cai MD Inc is 1184560047. It was assigned to this organization in the NPPES registry on April 24, 2026. The provider is doing business as Cai Retina.
Where is Louis Cai MD Inc located?
Louis Cai MD Inc is located at 1210 E Arques Ave Ste 210, Sunnyvale, CA 94085. The listed phone number is (408) 540-3559.
What is Louis Cai MD Inc's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is Louis Cai MD Inc enrolled in Medicare?
Yes. Louis Cai MD Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Louis Cai MD Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to Louis Cai MD Inc. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
When was this NPI record last updated?
The NPPES record for Louis Cai MD Inc was last updated on May 8, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Louis Cai Md Inc · NPI 1184560047
Retina Specialist organization in Sunnyvale, California. Organization record, active in the CMS NPPES registry since April 24, 2026.
## Identity
- **NPI:** 1184560047 (Entity type: Organization)
- **Enumerated:** April 24, 2026
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **Also known as:** Cai Retina (Doing Business As)
- **Organization subpart:** No
- **Authorized official:** Louis Cai, CEO
## Practice location
- **Address:** 1210 E ARQUES AVE STE 210, Sunnyvale, CA 94085-5422
- **Phone:** (408) 540-3559 · **Fax:** (510) 513-0885
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 1 clinician (Ophthalmology) reassigns Medicare billing to this organization (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** May 8, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1184560047) · Data from the CMS NPPES public registry.