DIANA LEE MD, PC
NPI 1427740828
Clinic/Center - Ophthalmologic Surgery in Fullerton, CA
About Diana Lee Md, Pc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DIANA LEE MD, PC (NPI 1427740828) is a healthcare organization registered as an ophthalmologic surgery in Fullerton, California and active in the NPI registry since May 2023. The organization lists Diana Lee, President/chief Executive Officer, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Diana Lee Md, Pc 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 Diana Lee MD, PC, 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 Diana Lee MD, PC's NPI number?
The NPI number for Diana Lee MD, PC is 1427740828. It was assigned to this organization in the NPPES registry on May 23, 2023.
Where is Diana Lee MD, PC located?
Diana Lee MD, PC is located at 2226 N State College Blvd, Fullerton, CA 92831. The listed phone number is (657) 286-5375.
What is Diana Lee MD, PC's specialty?
The primary specialty registered for this NPI is Clinic/Center, specializing in Ophthalmologic Surgery, with taxonomy code 261QS0132X.
Is Diana Lee MD, PC enrolled in Medicare?
Yes. Diana Lee MD, PC is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Diana Lee MD, PC?
According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Ophthalmology) reassigns their Medicare billing to Diana Lee MD, PC. 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 Diana Lee MD, PC was last updated on September 11, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 13 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.
# Diana Lee Md, Pc · NPI 1427740828
Ophthalmologic Surgery organization in Fullerton, California. Organization record, active in the CMS NPPES registry since May 23, 2023.
## Identity
- **NPI:** 1427740828 (Entity type: Organization)
- **Enumerated:** May 23, 2023
- **Primary specialty:** Clinic/Center - Ophthalmologic Surgery · taxonomy 261QS0132X
- **Organization subpart:** No
- **Authorized official:** Diana Lee, PRESIDENT/CHIEF EXECUTIVE OFFICER
## Practice location
- **Address:** 2226 N STATE COLLEGE BLVD, Fullerton, CA 92831-1361
- **Phone:** (657) 286-5375
## 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:** September 11, 2025
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Source: [NPI Profile](https://npiprofile.com/npi/1427740828) · Data from the CMS NPPES public registry.