DR. VIAN ZADA MD
NPI 1578142170
Emergency Medicine in Pasadena, CA
About Dr. Vian Zada Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. VIAN ZADA MD (NPI 1578142170) is an individual emergency medicine provider in Pasadena, California, licensed in California (A197808) and active in the NPI registry since April 2021. She is enrolled in Medicare PECOS and is a graduate of Georgetown University School Of Medicine (2021).
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 and accepts Medicare assignment
Dr. Vian Zada Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignments
2Medicare enrollment records show Vian Zada reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Pasadena, CA 91105
- Reassigned Medicare billing, California enrollment
- 64 clinicians in this Medicare group
Calabasas, CA 91302
- Reassigned Medicare billing, California enrollment
- 256 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 91105 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 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
PASADENA, CA 91105
PASADENA, CA 91105
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 Vian Zada's NPI number?
The NPI number for Vian Zada is 1578142170. It was assigned to this individual provider in the NPPES registry on April 2, 2021.
Where is Vian Zada located?
Vian Zada practices at 100 W California Blvd, Pasadena, CA 91105. The listed phone number is (626) 397-5000.
What is Vian Zada's specialty?
The primary specialty registered for this NPI is Emergency Medicine with taxonomy code 207P00000X.
Is Vian Zada enrolled in Medicare?
Yes. Vian Zada is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organizations bill Medicare for Vian Zada's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Vian Zada reassigns Medicare benefits to 2 organizations: Hmh Emergency Medical Group, Inc. (Pasadena, CA) and Exer Medical Corporation (Calabasas, CA). Each 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 Vian Zada'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 Vian Zada was last updated on February 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.
# Dr. Vian Zada, MD · NPI 1578142170
Emergency Medicine physician in Pasadena, California. Individual provider, active in the CMS NPPES registry since April 2, 2021.
## Identity
- **NPI:** 1578142170 (Entity type: Individual)
- **Enumerated:** April 2, 2021
- **Primary specialty:** Emergency Medicine · taxonomy 207P00000X
- **State license:** A197808 (California)
- **Sole proprietor:** No
## Practice location
- **Address:** 100 W CALIFORNIA BLVD, Pasadena, CA 91105-3010
- **Phone:** (626) 397-5000
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Hmh Emergency Medical Group, Inc. (NPI 1659383024, Pasadena, CA); Exer Medical Corporation (NPI 1588901532, Calabasas, CA) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Georgetown University School Of Medicine, class of 2021
## Record status
- **NPPES last updated:** February 19, 2026
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Source: [NPI Profile](https://npiprofile.com/npi/1578142170) · Data from the CMS NPPES public registry.