Ellen Hayashi, D.D.S.
NPI 1841407772 · Periodontics · Redondo Beach, CA
Enrolled with Medicare as Order and Referring Only - Dentist · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ellen Hayashi, D.D.S. is a Periodontics provider in Redondo Beach, CA (NPI 1841407772).
Provider details
- NPI number
- 1841407772
- Entity type
- Individual
- Primary specialty
- PeriodonticsDental Providers
- Credential
- D.D.S.
- Sex
- Female
- Sole proprietor
- Yes
- License
- 33699 (CA)
Specialties & taxonomies
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
Mailing address
Registry dates
- Enumerated
- 2007-05-17
- Last updated
- 2007-07-08
Frequently asked questions
- What is Ellen Hayashi's NPI number?
- Ellen Hayashi's National Provider Identifier (NPI) is 1841407772, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ellen Hayashi's specialty?
- Ellen Hayashi is listed in the NPPES registry with a primary specialty of Periodontics (Dental Providers).
- Where is Ellen Hayashi located?
- Ellen Hayashi's practice location on file with NPPES is 1921 S Catalina Ave, Redondo Beach, CA 90277-5516.
- What is Ellen Hayashi's phone number?
- The practice phone number listed in the NPPES registry for Ellen Hayashi is (310) 375-8012.
- Does Ellen Hayashi accept Medicare?
- Ellen Hayashi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ellen Hayashi's NPI active?
- Yes — Ellen Hayashi's NPI (1841407772) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.