N/A
NPI 1942239694
Internal Medicine - Nephrology in Oxnard, CA
About N/a NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
N/A (NPI 1942239694) is a healthcare organization registered as a nephrology in Oxnard, California and active in the NPI registry since July 2006. The organization holds 2 active CLIA laboratory certificates and lists Richard K Westerdoll, Executive Director, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 2
Other Identifiers 3
Group Practice 1
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
N/a is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
7Medicare enrollment records show 7 clinicians reassign Medicare billing to N/A, which bills Medicare for the services they deliver. Of these, 5 practice at this address. They are listed nearest first.
Clinicians, nearest first (7)
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
CLIA Laboratory Certificates CMS CLIA 2
Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.
Certificate for Provider-Performed Microscopy Procedures (PPMP) 05D0583438
Vista Del Mar Medical Group Inc · Oxnard, CACertificate for Provider-Performed Microscopy Procedures (PPMP) 05D2103987
Vista Del Mar Medical Group, Inc. · Ventura, CAFrequently 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 Vista Del Mar Medical Group, Inc's NPI number?
The NPI number for Vista Del Mar Medical Group, Inc is 1942239694. It was assigned to this organization in the NPPES registry on July 2, 2006.
Where is Vista Del Mar Medical Group, Inc located?
Vista Del Mar Medical Group, Inc is located at 1200 W Gonzales Rd Suite 300, Oxnard, CA 93036. The listed phone number is (805) 983-0691.
What is Vista Del Mar Medical Group, Inc's specialty?
The primary specialty registered for this NPI is Internal Medicine, specializing in Nephrology, with taxonomy code 207RN0300X.
Is Vista Del Mar Medical Group, Inc enrolled in Medicare?
Yes. Vista Del Mar Medical Group, Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Vista Del Mar Medical Group, Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 7 clinicians in 2 Medicare specialties reassign their Medicare billing to Vista Del Mar Medical Group, Inc. 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. The largest specialties are Nephrology (6) and Nurse Practitioner (1). Of these, 5 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Does Vista Del Mar Medical Group, Inc hold CLIA laboratory certificates?
Yes. 2 active CLIA laboratory certificates are associated with this NPI under the federal Clinical Laboratory Improvement Amendments program. The certificates are listed in the CLIA Laboratory Certificates section above.
When was this NPI record last updated?
The NPPES record for Vista Del Mar Medical Group, Inc was last updated on November 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 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.
# N/a · NPI 1942239694
Nephrology organization in Oxnard, California. Organization record, active in the CMS NPPES registry since July 2, 2006.
## Identity
- **NPI:** 1942239694 (Entity type: Organization)
- **Enumerated:** July 2, 2006
- **Primary specialty:** Internal Medicine - Nephrology · taxonomy 207RN0300X
- **Legal business name:** Vista Del Mar Medical Group, Inc
- **Organization subpart:** No
- **Authorized official:** Richard Westerdoll, EXECUTIVE DIRECTOR
## Practice location
- **Address:** 1200 W GONZALES RD, SUITE 300, Oxnard, CA 93036-3072
- **Phone:** (805) 983-0691 · **Fax:** (805) 981-1643
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 7 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nephrology (6), Nurse Practitioner (1); 5 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 12, 2021
- **Other identifiers:** Other ZZZ34679Z (CA); Other 110039977 (CA); Medicaid ZZZ75566Z (CA)
- **CLIA laboratory certificates:** 2 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1942239694) · Data from the CMS NPPES public registry.