PORTER RANCH OPTOMETRY
NPI 1336496587
Optometrist in Northridge, CA
About Porter Ranch Optometry NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
PORTER RANCH OPTOMETRY (NPI 1336496587) is a healthcare organization registered as an optometrist in Northridge, California and active in the NPI registry since August 2012. The organization lists Michael Varoujan Terzian, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses
Other Names 1
Other Identifiers 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, revalidation and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Porter Ranch Optometry is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Revalidation Due Date
Revalidation due by November 30, 2026
Medicare-enrolled providers and suppliers confirm their enrollment information with CMS on a set cycle, every 5 years for most and every 3 years for medical equipment suppliers. CMS sets the due date for each enrollment.
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Porter Ranch Optometry, which bills Medicare for the services they deliver. Of these, 1 practice within 10 miles. They are listed nearest first.
Clinicians, nearest first (2)
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 Michael V. Terzian, O.D., A Professional Corporation's NPI number?
The NPI number for Michael V. Terzian, O.D., A Professional Corporation is 1336496587. It was assigned to this organization in the NPPES registry on August 7, 2012. The provider is doing business as Porter Ranch Optometry.
Where is Michael V. Terzian, O.D., A Professional Corporation located?
Michael V. Terzian, O.D., A Professional Corporation is located at 11151 Tampa Ave, Northridge, CA 91326. The listed phone number is (818) 366-9664.
What is Michael V. Terzian, O.D., A Professional Corporation's specialty?
The primary specialty registered for this NPI is Optometrist with taxonomy code 152W00000X.
Is Michael V. Terzian, O.D., A Professional Corporation enrolled in Medicare?
Yes. Michael V. Terzian, O.D., A Professional Corporation is registered in the Medicare PECOS enrollment system.
When is Michael V. Terzian, O.D., A Professional Corporation's Medicare revalidation due?
According to the CMS Revalidation Due Date List (October 2026 release), the Medicare Non-DME Part B enrollment for this organization (California, Clinic/Group Practice) is due for revalidation by November 30, 2026. Medicare providers and suppliers revalidate their enrollment every 5 years, and medical equipment suppliers every 3 years. Confirm current requirements with your Medicare Administrative Contractor.
How many clinicians bill Medicare through Michael V. Terzian, O.D., A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians, all in Optometry, reassign their Medicare billing to Michael V. Terzian, O.D., A Professional Corporation. 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. Of these, 1 practice within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Michael V. Terzian, O.D., A Professional Corporation accept?
Health plans from Anthem Blue Cross and Blue Shield, Blue Cross Blue Shield of Wyoming, Blue Cross and Blue Shield of Louisiana, Blue Cross and Blue Shield of Montana and Blue Cross and Blue Shield of Oklahoma and 2 other insurers list Michael V. Terzian, O.D., A Professional Corporation as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Michael V. Terzian, O.D., A Professional Corporation was last updated on June 10, 2016. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 years 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.
# Porter Ranch Optometry · NPI 1336496587
Optometrist organization in Northridge, California. Organization record, active in the CMS NPPES registry since August 7, 2012.
## Identity
- **NPI:** 1336496587 (Entity type: Organization)
- **Enumerated:** August 7, 2012
- **Primary specialty:** Optometrist · taxonomy 152W00000X
- **Legal business name:** Michael V. Terzian, O.d., A Professional Corporation
- **Organization subpart:** No
- **Authorized official:** Michael Terzian, PRESIDENT
## Practice location
- **Address:** 11151 TAMPA AVE, Northridge, CA 91326-2254
- **Phone:** (818) 366-9664 · **Fax:** (818) 368-5314
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Medicare revalidation due:** November 30, 2026 (Non-DME Part B, California, Clinic/Group Practice) · CMS Revalidation Due Date List, October 2026 release
- **Clinicians billing through this organization:** 2 clinicians (Optometry) reassign Medicare billing to this organization (form CMS-855R); 1 practice within 10 miles · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** June 10, 2016
- **Other identifiers:** Medicare PIN GP009A (CA); Medicaid 1336496587 (CA)
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Source: [NPI Profile](https://npiprofile.com/npi/1336496587) · Data from the CMS NPPES public registry.