ONEILL CLARK NARVARTE & VICKS A PROFESSIONAL CORPORATION
NPI 1962501940
Internal Medicine in Reno, NV
About Oneill Clark Narvarte & Vicks A Professional Corporation NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
ONEILL CLARK NARVARTE & VICKS A PROFESSIONAL CORPORATION (NPI 1962501940), doing business as Sierra Nevada Endocrinology Consultants, is a healthcare organization registered as an internal medicine in Reno, Nevada and active in the NPI registry since September 2006. The organization maintains 6 additional practice locations and lists James Sullivan, President, as its authorized official.
NPPES Registry Identity
Specialties & Licenses 8
Other Names 4
Secondary Practice Locations 6
Other Identifiers 2
Group Practice 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Oneill Clark Narvarte & Vicks A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
25Medicare enrollment records show 25 clinicians reassign Medicare billing to Oneill Clark Narvarte & Vicks A Professional Corporation, which bills Medicare for the services they deliver. Of these, 20 practice at this address and 23 within 10 miles. Listed here are the 20 practicing nearest to this location.
Clinicians by Medicare Specialty 4
Nearest to this location (20)
See all 25Source: 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 Oneill Clark Narvarte & Vicks A Professional Corporation's NPI number?
The NPI number for Oneill Clark Narvarte & Vicks A Professional Corporation is 1962501940. It was assigned to this organization in the NPPES registry on September 22, 2006. The provider is doing business as Sierra Nevada Endocrinology Consultants, Sierra Nevada Nephrology Access Center, Sierra Nevada Nephrology Consultants and Sierra Nevada Specialty Care.
Where is Oneill Clark Narvarte & Vicks A Professional Corporation located?
Oneill Clark Narvarte & Vicks A Professional Corporation is located at 5437 Kietzke Ln, Reno, NV 89511. The listed phone number is (775) 322-4550.
What is Oneill Clark Narvarte & Vicks A Professional Corporation's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Oneill Clark Narvarte & Vicks A Professional Corporation enrolled in Medicare?
Yes. Oneill Clark Narvarte & Vicks A Professional Corporation is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Oneill Clark Narvarte & Vicks A Professional Corporation?
According to the CMS Revalidation Reassignment List (October 2026 release), 25 clinicians in 4 Medicare specialties reassign their Medicare billing to Oneill Clark Narvarte & Vicks 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. The largest specialties are Nephrology (15), Nurse Practitioner (8) and Clinical Social Worker (1). Of these, 20 practice at this address and 23 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
What insurance does Oneill Clark Narvarte & Vicks A Professional Corporation accept?
Health plans from Ambetter Health, Ambetter from Arizona Complete Health and Molina Healthcare list Oneill Clark Narvarte & Vicks 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 Oneill Clark Narvarte & Vicks A Professional Corporation was last updated on August 15, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 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.
# Oneill Clark Narvarte & Vicks A Professional Corporation · NPI 1962501940
Internal Medicine organization in Reno, Nevada. Organization record, active in the CMS NPPES registry since September 22, 2006.
## Identity
- **NPI:** 1962501940 (Entity type: Organization)
- **Enumerated:** September 22, 2006
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **Also known as:** Sierra Nevada Endocrinology Consultants (Doing Business As); Sierra Nevada Nephrology Access Center (Doing Business As); Sierra Nevada Nephrology Consultants (Doing Business As); and 1 more
- **Organization subpart:** No
- **Authorized official:** James Sullivan, PRESIDENT
## Practice location
- **Address:** 5437 KIETZKE LN, Reno, NV 89511-1088
- **Phone:** (775) 322-4550 · **Fax:** (775) 322-4956
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 25 clinicians in 4 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Nephrology (15), Nurse Practitioner (8), Clinical Social Worker (1); 20 practice at this address and 23 within 10 miles; [full list](https://npiprofile.com/npi/1962501940/clinicians) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** August 15, 2026
- **Other identifiers:** Medicaid 1722434 (CA); Medicaid 100504641 (NV)
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Source: [NPI Profile](https://npiprofile.com/npi/1962501940) · Data from the CMS NPPES public registry.