DENA WERNER M.D.
NPI 1669758918
Internal Medicine in Ventura, CA

Q: What is Dena Werner's NPI number?

The NPI number for Dena Werner is 1669758918. It was assigned to this individual provider in the NPPES registry on November 1, 2011.

Q: What is Dena Werner's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Dena Werner was last updated on October 28, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.

Active since November 01, 2011PECOS Enrolled

2721 E MAIN ST, VENTURA, CA 93003(805) 667-2841 Get Directions Write a Review

NPPES record last updated: October 28, 2025. Verified against the NPPES registry weekly; last sync: November 01, 2026.

Record update history: Nov 3, 2022, May 3, 2021, Oct 11, 2016 and 1 more (4 updates tracked since 2016).

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About Dena Werner M.d. NPPES

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

DENA WERNER M.D. (NPI 1669758918) is an individual internal medicine provider in Ventura, California, licensed in California (A127060) and active in the NPI registry since November 2011. She is enrolled in Medicare PECOS and maintains 4 additional practice locations.

NPPES Registry Identity

NPI1669758918

Entity TypeIndividualFemale

Primary Taxonomy207R00000X

Provider Legal NameDENA WERNERCredential: M.D.

Location Address2721 E MAIN STVentura, CA 93003-2803

Mailing Address325 W Channel Islands BlvdOxnard, CA 93033-4501

Phone(805) 667-2841

Sole ProprietorNo

Enumeration DateNovember 1, 2011

Last NPPES UpdateOctober 28, 20254 updates tracked since enumeration

NPPES CertifiedOctober 28, 2025

✔ NPI 1669758918 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in CA · A127060

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

2721 E MAIN ST, Ventura, CA 93003

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Secondary Practice Locations 4

Location 1325 W Channel Islands BlvdOxnard, CA 93033-4501 · Phone (805) 240-7000

Location 2300 Hillmont Ave Ste 502Ventura, CA 93003-1651 · Phone (805) 652-6222

Location 3300 Hillmont AveVentura, CA 93003-1651 · Phone (805) 652-6000

Location 42400 S C StOxnard, CA 93033-4555 · Phone (805) 240-7000

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dena Werner M.d. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Medicare Billing Reassignments

Medicare enrollment records show Dena Werner reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.

Community Memorial Health System

Same address

Multi-Specialty

2721 E MAIN ST
Ventura, CA 93003

Reassigned Medicare billing, California enrollment
267 clinicians in this Medicare group

NPI 1083001010 (805) 948-2841

County Of Ventura

0.4 mi

Mental Health (Including Community Mental Health Center)

200 HILLMONT AVE
Ventura, CA 93003

Reassigned Medicare billing, California enrollment
710 clinicians in this Medicare group

NPI 1205394525 (805) 652-6002

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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

$140.72 typical visit price

range $62.32 – $185.36

Typical copayment $35.18 (range $15.58 – $46.34)

Most-billed visit code 99204

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.

Referred Medical Equipment & Supplies CMS DME claims

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253

DME-Other DME · category DE017N

4 suppliers15 claims39 services$6.23 avg. paid by Medicare

Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

Other Providers at the Same Location NPPES 10

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

DR. MICHELLE L DAUCETT D.O.

Family Medicine