Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

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

Active since April 25, 2020PECOS Enrolled
5250 RALSTON ST, VENTURA, CA 93003(805) 658-5800 Get Directions Write a Review

NPPES record last updated: August 26, 2026. Verified against the NPPES registry weekly; last sync: August 30, 2026.

Record update history: Aug 26, 2026, Aug 5, 2025, Nov 20, 2024 and 4 more (7 updates tracked since 2020).

About Dr. Joseph Cook Vielbig Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JOSEPH COOK VIELBIG MD (NPI 1265052641) is an individual family medicine provider in Ventura, California, licensed in California (A197925) and active in the NPI registry since April 2020. He is enrolled in Medicare PECOS and is a graduate of University Of Oklahoma College Of Medicine (2023).

NPPES Registry Identity

NPI1265052641
Entity TypeIndividualMale
Primary Taxonomy207Q00000X
Provider Legal NameDR. JOSEPH COOK VIELBIGCredential: MD
Location Address5250 RALSTON STVentura, CA 93003-7318
Mailing Address5250 Ralston StVentura, CA 93003-7318 · (805) 658-5800
Sole ProprietorNo
Medical School CMSUniversity Of Oklahoma College Of MedicineGraduated 2023
Enumeration DateApril 25, 2020
Last NPPES UpdateAugust 26, 20267 updates tracked since enumeration
NPPES CertifiedAugust 26, 2026
NPI 1265052641 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

Primary SpecialtyFamily MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207Q00000X
License Licensed in CA · A197925
Definition
Family Medicine is the medical specialty which is concerned with the total health care of the individual and the family. It is the specialty in breadth which integrates the biological, clinical, and behavioral sciences. The scope of family medicine is not limited by age, sex, organ system, or disease entity.
5250 RALSTON ST, Ventura, CA 93003

Other Identifiers 1

OtherA197925CA · California Department Of Consumer Affairs

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

Enrolled in Medicare (PECOS)

Dr. Joseph Cook Vielbig Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

PECOS PAC ID749780922
PECOS Enrollment IDI20260626004067
Eligible to Order & Refer Part B Labs & Imaging Durable Medical Equipment Home Health Agency Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 93003 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$95.28 typical visit price
range $62.32 – $185.36
Typical copayment $23.82 (range $15.58 – $46.34)
Most-billed visit code 99203
Established Patient
$108.74 typical visit price
range $20.68 – $151.85
Typical copayment $27.18 (range $5.17 – $37.96)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

Registered Nurse (Ambulatory Care)
5250 RALSTON ST
VENTURA, CA 93003
Clinic/Center (VA)
5250 RALSTON ST
VENTURA, CA 93003
Social Worker (Clinical)
5250 RALSTON ST
VENTURA, CA 93003
Social Worker
5250 RALSTON ST
VENTURA, CA 93003
Social Worker (Clinical)
5250 RALSTON ST
VENTURA, CA 93003
Social Worker (Clinical)
5250 RALSTON ST
VENTURA, CA 93003
Psychologist
5250 RALSTON ST
VENTURA, CA 93003
Social Worker (Clinical)
5250 RALSTON ST
VENTURA, CA 93003

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 Joseph Vielbig's NPI number?

The NPI number for Joseph Vielbig is 1265052641. It was assigned to this individual provider in the NPPES registry on April 25, 2020.

Where is Joseph Vielbig located?

Joseph Vielbig practices at 5250 Ralston St, Ventura, CA 93003. The listed phone number is (805) 658-5800.

What is Joseph Vielbig's specialty?

The primary specialty registered for this NPI is Family Medicine with taxonomy code 207Q00000X.

Is Joseph Vielbig enrolled in Medicare?

Yes. Joseph Vielbig is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Joseph Vielbig was last updated on August 26, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 9 days 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.