Dena Werner, M.D.
NPI 1669758918 · Internal Medicine Physician · Ventura, CA
Enrolled with Medicare as Practitioner - Infectious Disease · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Dena Werner, M.D. is a Internal Medicine Physician provider in Ventura, CA (NPI 1669758918).
Provider details
- NPI number
- 1669758918
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A127060 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
14 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
5 documented practice locations
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Additional practice locations (4)
- 2400 S C StOxnard, CA 93033-4555Phone: (805) 240-7000
- 325 W Channel Islands BlvdOxnard, CA 93033-4501Phone: (805) 240-7000
- 300 Hillmont AveVentura, CA 93003-1651Phone: (805) 652-6000
- 300 Hillmont Ave Ste 502Ventura, CA 93003-1651Phone: (805) 652-6222
Registry dates
- Enumerated
- 2011-11-01
- Last updated
- 2025-10-28
- Certified
- 2025-10-28
Frequently asked questions
- What is Dena Werner's NPI number?
- Dena Werner's National Provider Identifier (NPI) is 1669758918, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Dena Werner's specialty?
- Dena Werner is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Dena Werner located?
- Dena Werner's practice location on file with NPPES is 2721 E Main St, Ventura, CA 93003-2803.
- What is Dena Werner's phone number?
- The practice phone number listed in the NPPES registry for Dena Werner is (805) 667-2841.
- Does Dena Werner accept Medicare?
- Dena Werner is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Dena Werner's NPI active?
- Yes — Dena Werner's NPI (1669758918) is active in the NPPES registry as of the last update on 2025-10-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.