NPIMap

Organization Active NPI

Oneill Clark Narvarte & Vicks a Professional Corporation

Doing business as Sierra Nevada Endocrinology Consultants

  • Internal Medicine Physician
  • Reno, NV
National Provider Identifier
1962501940
Registry record updated Aug 15, 2026
On this page

Key facts

NPPES NPI Registry
Primary specialty
Internal Medicine PhysicianTaxonomy code 207R00000X
Legal business name
ONEILL CLARK NARVARTE & VICKS A PROFESSIONAL CORPORATION
Doing business as
Sierra Nevada Endocrinology Consultants
Sierra Nevada Nephrology Access Center
Sierra Nevada Nephrology Consultants1 more in Other names
Practice address
5437 Kietzke LN
Reno, NV 89511-1088
Phone
(775) 322-4550
Fax
(775) 322-4956
NPI assigned
Sep 22, 2006
Last updated
Aug 15, 2026By the provider in NPPES
Organization subpart
No

NPPES NPI Registry

Updated by the provider on Aug 15, 2026

Registry information is reported by the provider to CMS and is not verified. About this source

Authorized official

Name
Dr. James Sullivan III, DONPI 1467560292
Title
President
Phone
(775) 322-4550

Authorized official NPPES reports the official by name only. The link goes to the one practitioner connected to this organization with that name.

Specialties & licenses 8

Specialty (taxonomy)CodeLicenseStatePrimary
Clinical Social WorkerGroup: 193200000X MULTI-SPECIALTY GROUP 1041C0700X
Registered DietitianGroup: 193200000X MULTI-SPECIALTY GROUP 133V00000X
Internal Medicine PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207R00000X Primary
Endocrinology, Diabetes & Metabolism PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207RE0101X
Nephrology PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 207RN0300X
Vascular Surgery PhysicianGroup: 193200000X MULTI-SPECIALTY GROUP 2086S0129X
Physician AssistantGroup: 193200000X MULTI-SPECIALTY GROUP 363A00000X
Nurse PractitionerGroup: 193200000X MULTI-SPECIALTY GROUP 363L00000X

Addresses

Primary practice location

5437 Kietzke LN
Reno, NV 89511-1088

Mailing address

5437 Kietzke LN
Reno, NV 89511-1088
Phone (775) 322-4550

Other practice location 1

932 Ryland St
Reno, NV 89502-1773
Phone (775) 322-4550

Other practice location 2

6 Steptoe Cir
Ely, NV 89301-2692
Phone (775) 322-4550

Other practice location 3

1995 Errecart Blvd Ste 205
Elko, NV 89801-8337
Phone (775) 322-4550

Other practice location 4

2340 S Carson St Ste A
Carson City, NV 89701-4540
Phone (775) 322-4550

Other practice location 5

801 E Williams Ave
Fallon, NV 89406-3052
Phone (775) 322-4550

Other practice location 6

5961 S Los Altos Pkwy Ste 107
Sparks, NV 89436-2501
Phone (775) 322-4550

Other names 4

  • Sierra Nevada Endocrinology Consultants Doing business as
  • Sierra Nevada Nephrology Access Center Doing business as
  • Sierra Nevada Nephrology Consultants Doing business as
  • Sierra Nevada Specialty Care Doing business as

Medicare participation

Medicare enrollment files
Medicare fee-for-service enrollment
Enrolled in NV, CA2 enrollments

Enrollment records 2

Enrollment IDStateProvider typePAC IDDetails
O20040902000894 NV Part B Supplier - Clinic/Group Practice 2668448531 Receives reassigned benefits from 27 practitioners
Practice locations: Sparks, NV; Winnemucca, NV; Reno, NV; Fallon, NV; Ely, NV; Elko, NV; Carson City, NV
O20201030000704 CA Part B Supplier - Clinic/Group Practice 2668448531 Receives reassigned benefits from 6 practitioners
Practice locations: Crescent City, CA

National Provider Directory

National Provider Directory

Member organizations 1

Organizations listed as members of this organization in the National Provider Directory.

  • Snnac LLC

    dba Azura Surgery Center Northern Nevada

    • Ambulatory Surgical Clinic/Center
    • Reno, NV
    • NPI 1578077103

    Member Of

    NPD member

Locations

2340 S Carson St
Ste A
Carson City, NV 89701

1780 Browning Way
Ste B
Elko, NV 89801
Phone (775) 778-0386

1995 Errecart Blvd
Ste 205
Elko, NV 89801
Phone (775) 738-3654

701 15th St E
Ely, NV 89301
Phone (615) 259-0693

1500 E 2nd St
Ste 106
Reno, NV 89502

901 E 2nd St
Ste 205
Reno, NV 89502
Phone (775) 322-2458

932 Ryland St
Reno, NV 89502
Phone (775) 324-4040

211 Aiken St
#B
Winnemucca, NV 89445

830 Fairgrounds Rd
Winnemucca, NV 89445
Phone (775) 623-3234

900 Mizpah St
Ste B
Winnemucca, NV 89445
Phone (775) 625-1600

Practitioners & affiliated clinicians

Practitioners 32

Individual providers connected to this organization through Medicare benefit reassignment, Care Compare group membership or National Provider Directory roles, and the practitioner matching its NPPES authorized official.

View all 32

NPI Registry JSON

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1158883200000",
    "enumeration_type": "NPI-2",
    "last_updated_epoch": "1786752000000",
    "number": "1962501940",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "5437 KIETZKE LN",
            "city": "RENO",
            "state": "NV",
            "postal_code": "895111088",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4776"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "5437 KIETZKE LN",
            "city": "RENO",
            "state": "NV",
            "postal_code": "895111088",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956"
        }
    ],
    "practiceLocations": [
        {
            "address_1": "932 Ryland St",
            "address_purpose": "LOCATION",
            "city": "Reno",
            "state": "NV",
            "postal_code": "895021773",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "6 Steptoe Cir",
            "address_purpose": "LOCATION",
            "city": "Ely",
            "state": "NV",
            "postal_code": "893012692",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "1995 Errecart Blvd Ste 205",
            "address_purpose": "LOCATION",
            "city": "Elko",
            "state": "NV",
            "postal_code": "898018337",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "2340 S Carson St Ste A",
            "address_purpose": "LOCATION",
            "city": "Carson City",
            "state": "NV",
            "postal_code": "897014540",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "801 E Williams Ave",
            "address_purpose": "LOCATION",
            "city": "Fallon",
            "state": "NV",
            "postal_code": "894063052",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        },
        {
            "address_1": "5961 S Los Altos Pkwy Ste 107",
            "address_purpose": "LOCATION",
            "city": "Sparks",
            "state": "NV",
            "postal_code": "894362501",
            "country_code": "US",
            "telephone_number": "775-322-4550",
            "fax_number": "775-322-4956",
            "country_name": "United States",
            "address_type": "DOM"
        }
    ],
    "basic": {
        "organization_name": "ONEILL CLARK NARVARTE & VICKS A PROFESSIONAL CORPORATION",
        "organizational_subpart": "NO",
        "enumeration_date": "2006-09-22",
        "last_updated": "2026-08-15",
        "certification_date": "2026-08-15",
        "status": "A",
        "authorized_official_last_name": "SULLIVAN",
        "authorized_official_first_name": "JAMES",
        "authorized_official_title_or_position": "PRESIDENT",
        "authorized_official_telephone_number": "775-322-4550",
        "authorized_official_name_prefix": "Dr.",
        "authorized_official_name_suffix": "III",
        "authorized_official_credential": "DO"
    },
    "taxonomies": [
        {
            "code": "1041C0700X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Social Worker, Clinical",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "133V00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Dietitian, Registered",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207R00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine",
            "state": null,
            "license": null,
            "primary": true
        },
        {
            "code": "207RE0101X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Endocrinology, Diabetes & Metabolism",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "207RN0300X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Internal Medicine, Nephrology",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "2086S0129X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Surgery, Vascular Surgery",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "363A00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Physician Assistant",
            "state": null,
            "license": null,
            "primary": false
        },
        {
            "code": "363L00000X",
            "taxonomy_group": "193200000X MULTI-SPECIALTY GROUP",
            "desc": "Nurse Practitioner",
            "state": null,
            "license": null,
            "primary": false
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": [
        {
            "organization_name": "Sierra Nevada Endocrinology Consultants",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Sierra Nevada Nephrology Access Center",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Sierra Nevada Nephrology Access Center",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Sierra Nevada Nephrology Consultants",
            "code": "3",
            "type": "Doing Business As"
        },
        {
            "organization_name": "Sierra Nevada Specialty Care",
            "code": "3",
            "type": "Doing Business As"
        }
    ]
}

Other providers in Reno, NV

Sources for this page

  • NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Aug 15, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
  • Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments.
  • National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.