DR. JOSEPH COOK VIELBIG MD
Complete NPI Record 1265052641
Family Medicine in Ventura, CA

Active since April 25, 2020PECOS Enrolled
300 HILLMONT AVE, VENTURA, CA 93003(805) 652-6228(805) 652-6133 Get Directions

NPPES record last updated: August 5, 2025. Verified against the NPPES registry weekly; last sync: July 19, 2026.

Record update history: Aug 5, 2025, Nov 20, 2024, Aug 16, 2024 and 3 more (6 updates tracked since 2020).

Complete NPI Dataset

This page contains the complete raw NPPES record for Dr. Joseph Cook Vielbig, MD (NPI 1265052641), an individual family medicine provider in Ventura, CA. All 34 fields on file are listed with their current values and official NPPES definitions, exactly as recorded in the National Plan and Provider Enumeration System. Only fields that contain data are included, so the number of fields shown varies from one NPI record to another.

Use the tools below to filter fields by category, search within the record, or jump straight to a specific field. You can download the full record as a CSV, JSON, or text file, or filter first and export only the fields you need. The Print Clean Summary button produces a printer-friendly copy of the record.

Registry File Document Utilities
NPI: 1265052641
Field 1/34
The 10-position all-numeric identification number assigned by the NPS to uniquely identify a health care provider. The NPI number includes an ISO standard check-digit in the 10th position. There is no intelligence about the health care provider in the number.
Entity Type Code: 1
Field 2/34
Code describing the type of health care provider that is being assigned an NPI. Codes are 1 = (Person): individual human being who furnishes health care; 2 = (Non-person): entity other than an individual human being that furnishes health care (for example, hospital, SNF, hospital subunit, pharmacy, or HMO).
Provider Last Name Legal Name: VIELBIG
Field 3/34
The last name of the provider. If the provider is an individual, this is the legal name.
Provider First Name: JOSEPH
Field 4/34
The first name of the provider, if the provider is an individual.
Provider Middle Name: COOK
Field 5/34
The middle name of the provider, if the provider is an individual.
Provider Name Prefix Text: DR.
Field 6/34
The name prefix or salutation of the provider if the provider is an individual; for example, Mr., Mrs., or Corporal.
Provider Credential Text: MD
Field 7/34
The abbreviations for professional degrees or credentials used or held by the provider, if the provider is an individual. Examples are MD, DDS, CSW, CNA, AA, NP, RNA, or PSY. These credential designations will not be verified by NPS.
Provider First Line Business Mailing Address: 300 HILLMONT AVE STE 120
Field 8/34
The first line mailing address of the provider being identified. This data element may contain the same information as "Provider first line location address".
Provider Business Mailing Address City Name: VENTURA
Field 9/34
The city name in the mailing address of the provider being identified.
Provider Business Mailing Address State Name: CA
Field 10/34
The State or Province name in the mailing address of the provider being identified. This data element may contain the same information as "Provider location address State name".
Provider Business Mailing Address Postal Code: 930031651
Field 11/34
The postal ZIP or zone code in the mailing address of the provider being identified. NOTE: ZIP code plus 4-digit extension, if available. This data element may contain the same information as "Provider location address postal code".
Provider Business Mailing Address Country Code If outside U S : US
Field 12/34
The country code in the mailing address of the provider being identified. This data element may contain the same information as "Provider location address country code".
Provider First Line Business Practice Location Address: 300 HILLMONT AVE
Field 13/34
The first line location address of the provider being identified. For providers with more than one physical location, this is the primary location. This address cannot include a Post Office box.
Provider Business Practice Location Address City Name: VENTURA
Field 14/34
The city name in the location address of the provider being identified.
Provider Business Practice Location Address State Name: CA
Field 15/34
The State code in the location of the provider being identified.
Provider Business Practice Location Address Postal Code: 930031651
Field 16/34
The postal ZIP or zone code in the location address of the provider being identified. NOTE: ZIP code plus 4-digit extension, if available.
Provider Business Practice Location Address Country Code If outside U S : US
Field 17/34
The country code in the location address of the provider being identified.
Provider Business Practice Location Address Telephone Number: 8056526228
Field 18/34
The telephone number associated with the location address of the provider being identified.
Provider Business Practice Location Address Fax Number: 8056526133
Field 19/34
The fax number associated with the location address of the provider being identified.
Provider Gender Code: M
Field 22/34
The code designating the provider's gender if the provider is a person.
Healthcare Provider Taxonomy Code 1: 390200000X
Field 23/34
This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Healthcare Provider Primary Taxonomy Switch 1: N
Field 24/34
This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Healthcare Provider Taxonomy Code 2: 207Q00000X
Field 25/34
This field represents the provider's taxonomy code, which classifies their type, classification, and area of specialization. This code comes from the Healthcare Provider Taxonomy Code Set maintained by the National Uniform Claim Committee (NUCC). The NPS will associate these data with the license data for providers with Entity type code = 1.
Provider License Number 2: A197925
Field 26/34
The license number issued to the provider being identified. The NPS can accommodate multiple license numbers for multiple specialties and for multiple States. The NPS will associate this data element with "provider taxonomy code".
Provider License Number State Code 2: CA
Field 27/34
The two-letter state code representing the U.S. state or territory that issued the provider's license. This field is linked to the Provider License Number field and identifies the jurisdiction where that license is valid. A provider may have multiple state codes if they hold licenses in more than one state.
Healthcare Provider Primary Taxonomy Switch 2: Y
Field 28/34
This field shows whether the related taxonomy code is the provider's primary specialty. It is a single-character value: "Y" indicates the taxonomy is the primary one, while "N" indicates it is not. Each provider record can have only one taxonomy code marked as primary.
Other Provider Identifier 1: A197925
Field 29/34
An additional identifier number for the provider, either current or previously used. This may include IDs issued by health plans, state agencies, or other organizations. The value is collected from the NPI application or update form.
Other Provider Identifier Type Code 1: 01
Field 30/34
A code that specifies the type of additional identifier associated with the provider, either current or past. Examples include UPIN (Universal Provider Identification Number), NSC (National Supplier Clearinghouse), OSCAR (CMS Certification Number), DEA (Drug Enforcement Administration number), state Medicaid ID, or a plan-specific PIN. The value is collected from the NPI application or update form.
Other Provider Identifier State 1: CA
Field 31/34
The two-letter state code representing the U.S. state or territory that issued the additional provider identifier. This links the Other Provider Identifier to the state where it is valid or was assigned.
Other Provider Identifier Issuer 1: CALIFORNIA DEPARTMENT OF CONSUMER AFFAIRS
Field 32/34
The name of the organization, agency, or health plan that assigned the additional provider identifier. This identifies who issued the number linked to Other Provider Identifier 1 (for example, a state Medicaid agency, Medicare, or a private insurance company).
Is Sole Proprietor: N
Field 33/34
Indicates whether the provider is registered as a sole proprietor. This is a single-character code: "Y" means the provider operates as a sole proprietor, and "N" means they do not.

Other Provider Identifiers 1

Legacy and payer-issued identifiers reported to the NPPES registry for this provider.

A197925 Other
Identifier 1/1
State: CA · Issuer: California Department Of Consumer Affairs
Other: An additional provider identifier that does not correspond to any of the other defined identifier type categories.
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