MARIALEJANDRA DIAZ IBARRA MD
NPI 1851031173
Ophthalmology - Retina Specialist in Mission Viejo, CA
About Marialejandra Diaz Ibarra Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MARIALEJANDRA DIAZ IBARRA MD (NPI 1851031173) is an individual retina specialist in Mission Viejo, California, licensed in California (A197533) and active in the NPI registry since April 2022. She is enrolled in Medicare PECOS and is a graduate of Other (2003).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Marialejandra Diaz Ibarra Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignment
Medicare enrollment records show Marialejandra Diaz Ibarra reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Pasadena, CA 91107
- Reassigned Medicare billing, California enrollment
- 70 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 92691 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Other Providers at the Same Location NPPES 5
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
MISSION VIEJO, CA 92691
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 Marialejandra Diaz Ibarra's NPI number?
The NPI number for Marialejandra Diaz Ibarra is 1851031173. It was assigned to this individual provider in the NPPES registry on April 1, 2022.
Where is Marialejandra Diaz Ibarra located?
Marialejandra Diaz Ibarra practices at 26732 Crown Valley Pkwy Ste 351, Mission Viejo, CA 92691. The listed phone number is (949) 642-3100.
What is Marialejandra Diaz Ibarra's specialty?
The primary specialty registered for this NPI is Ophthalmology, specializing in Retina Specialist, with taxonomy code 207WX0107X.
Is Marialejandra Diaz Ibarra enrolled in Medicare?
Yes. Marialejandra Diaz Ibarra is registered in the Medicare PECOS enrollment system.
Which organization bills Medicare for Marialejandra Diaz Ibarra's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Marialejandra Diaz Ibarra reassigns Medicare benefits to Azul Vision Inc. (Pasadena, CA). The 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 Marialejandra Diaz Ibarra's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Marialejandra Diaz Ibarra was last updated on June 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# Marialejandra Diaz Ibarra, MD · NPI 1851031173
Retina Specialist physician in Mission Viejo, California. Individual provider, active in the CMS NPPES registry since April 1, 2022.
## Identity
- **NPI:** 1851031173 (Entity type: Individual)
- **Enumerated:** April 1, 2022
- **Primary specialty:** Ophthalmology - Retina Specialist · taxonomy 207WX0107X
- **State license:** A197533 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 26732 CROWN VALLEY PKWY STE 351, Mission Viejo, CA 92691-6374
- **Phone:** (949) 642-3100
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Azul Vision Inc. (NPI 1285247528, Pasadena, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2003
## Record status
- **NPPES last updated:** June 11, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1851031173) · Data from the CMS NPPES public registry.