IRENE JOSEFINA VENTURA ZADRAN RDN
NPI 1316598477
Dietitian, Registered in Walnut Creek, CA
About Irene Josefina Ventura Zadran Rdn NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IRENE JOSEFINA VENTURA ZADRAN RDN (NPI 1316598477) is an individual dietitian, registered in Walnut Creek, California, licensed in (86147551) and active in the NPI registry since September 2019. She is a graduate of Other (2018).
NPPES Registry Identity
Specialties & Licenses
Other Names 1
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
Irene Josefina Ventura Zadran Rdn 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 Reassignment
Medicare enrollment records show Irene Ventura Zadran reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Walnut Creek, CA 94597
- Reassigned Medicare billing, California enrollment
- 650 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.
Areas of Expertise CMS Part B claims 3
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Physician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 94597 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 3
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
WALNUT CREEK, CA 94597
WALNUT CREEK, CA 94597
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 Irene Ventura Zadran's NPI number?
The NPI number for Irene Ventura Zadran is 1316598477. It was assigned to this individual provider in the NPPES registry on September 20, 2019. The provider is also known as Irene Josefina Ventura Curiel Rd.
Where is Irene Ventura Zadran located?
Irene Ventura Zadran practices at 1450 Treat Blvd Ste 130, Walnut Creek, CA 94597. The listed phone number is (925) 941-5076.
What is Irene Ventura Zadran's specialty?
The primary specialty registered for this NPI is Dietitian, Registered with taxonomy code 133V00000X.
Is Irene Ventura Zadran enrolled in Medicare?
Yes. Irene Ventura Zadran 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 organization bills Medicare for Irene Ventura Zadran's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Irene Ventura Zadran reassigns Medicare benefits to John Muir Physician Network (Walnut Creek, 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 Irene Ventura Zadran'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 Irene Ventura Zadran was last updated on September 26, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Irene Josefina Ventura Zadran, RDN · NPI 1316598477
Dietitian, Registered provider in Walnut Creek, California. Individual provider, active in the CMS NPPES registry since September 20, 2019.
## Identity
- **NPI:** 1316598477 (Entity type: Individual)
- **Enumerated:** September 20, 2019
- **Primary specialty:** Dietitian, Registered · taxonomy 133V00000X
- **State license:** 86147551
- **Sole proprietor:** No
## Practice location
- **Address:** 1450 TREAT BLVD STE 130, Walnut Creek, CA 94597-2168
- **Phone:** (925) 941-5076
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** John Muir Physician Network (NPI 1841407665, Walnut Creek, CA), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2018
## Record status
- **NPPES last updated:** September 26, 2024
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Source: [NPI Profile](https://npiprofile.com/npi/1316598477) · Data from the CMS NPPES public registry.