Irene Josefina Ventura Zadran, RDN
Registered Dietitian · Walnut Creek, CA
Irene Josefina Ventura Zadran, RDN is a registered dietitian with a practice address in Walnut Creek, California, and NPI 1316598477, issued on Sep 20, 2019. Check the license with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Irene Josefina Ventura Zadran
- Credential
- RDN
- Primary taxonomy
- Registered Dietitian 133V00000X
- Practice location
- 1450 Treat Blvd Ste 130, Walnut Creek, CA 94597
- Phone
- (925) 941-5076
- Enumerated
- Sep 20, 2019
- Record last updated
- Sep 26, 2024
- Medicare enrollment
- Enrolled (PECOS I20200130003118); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest registered dietitian records → All 7,148 in California → Look up another NPI →
Also registered at 1450 Treat Blvd Ste 130
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Pia Marie Edlagan-Ortez, RN, CNSDiabetes Educator Registered Nurse1073163473
- Damara Johnson, MS, RD, CDERegistered Dietitian1265787725
- Debbie Sousa Hull, RD, CDERegistered Dietitian1013567429
Verify Irene Josefina Ventura Zadran in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- John Muir Physician NetworkWalnut Creek, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Irene Josefina Ventura Zadran among 7,148 registered dietitian records in California
Irene Josefina Ventura Zadran, RDN is one of 7,148 registered dietitian records with a practice address in California. 5% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 50% of them.
- NPI issued2019 · 50% of these records are older, 45% newer
- In a Medicare fileYes · 5% of these records are
- In the CMS Doctors and Clinicians fileYes · 7% of these records are
- Graduated2018 · median 2014 among the 529 with a school on file
- Record last updated2024 · 55% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 133V00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Registered Dietitian providers in California
There are 7,148 registered dietitian records in California.
All 7,148 in California → Every provider in Walnut Creek → Registered Dietitian nationwide →
The 8 registered dietitian records with the nearest ZIP codes
- Mallory Cooper, RDNWalnut Creek, CA 945971205560505
- Lauren Decker, M.S., R.D.Walnut Creek, CA 945971548617491
- Dominique Dortch, RDNWalnut Creek, CA 945971639986722
- Claudia Graetsch-Vasquez, RD, CDEWalnut Creek, CA 945971831740232
- Damara Johnson, MS, RD, CDEWalnut Creek, CA 945971265787725
- Sabra Leomo, RD, CSGWalnut Creek, CA 945971700699048
- Debbie Sousa Hull, RD, CDEWalnut Creek, CA 945971013567429
- Karen Alman, R.D.Walnut Creek, CA 945981295030377
Common questions
What is Irene Josefina Ventura Zadran, RDN's NPI number?
Irene Josefina Ventura Zadran, RDN's National Provider Identifier (NPI) is 1316598477, issued on Sep 20, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Irene Josefina Ventura Zadran, RDN located?
The NPPES record lists a practice address at 1450 Treat Blvd Ste 130, Walnut Creek, CA, 94597. Phone: (925) 941-5076. Providers update this record themselves, so call before visiting.
How can I verify Irene Josefina Ventura Zadran, RDN's license?
Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.