IndividualActive
Kay Duefrene, M.D.
NPI 1669434452 · Emergency Medicine Physician · Eureka, CA
Kay Duefrene, M.D. is a Emergency Medicine Physician provider in Eureka, CA (NPI 1669434452).
Provider details
- NPI number
- 1669434452
- Entity type
- Individual
- Primary specialty
- Emergency Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A25672 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(91/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
20 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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
2700 Dolbeer St
Eureka, CA 95501-4736
Phone: (707) 269-4250
Street-level locationGet directions
Mailing address
Po Box 81461
San Diego, CA 92138-1461
Registry dates
- Enumerated
- 2006-04-05
- Last updated
- 2009-11-11
Frequently asked questions
- What is Kay Duefrene's NPI number?
- Kay Duefrene's National Provider Identifier (NPI) is 1669434452, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Kay Duefrene's specialty?
- Kay Duefrene is listed in the NPPES registry with a primary specialty of Emergency Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Kay Duefrene located?
- Kay Duefrene's practice location on file with NPPES is 2700 Dolbeer St, Eureka, CA 95501-4736.
- What is Kay Duefrene's phone number?
- The practice phone number listed in the NPPES registry for Kay Duefrene is (707) 269-4250.
- Is Kay Duefrene's NPI active?
- Yes — Kay Duefrene's NPI (1669434452) is active in the NPPES registry as of the last update on 2009-11-11.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.