Hayashi & Duffala Dental Group
NPI 1598937401 · General Practice Dentistry · San Francisco, CA
Hayashi & Duffala Dental Group is a General Practice Dentistry organization in San Francisco, CA (NPI 1598937401).
Provider details
- NPI number
- 1598937401
- Entity type
- Organization
- Primary specialty
- General Practice DentistryDental Providers
- Organization subpart
- No
- Authorized official
- James Hayashi, Partner(415) 986-0382
- License
- 35605 (CA)
Specialties & taxonomies
Dental Providers
Dental Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
- 2008-03-31
- Last updated
- 2008-04-22
Frequently asked questions
- What is Hayashi & Duffala Dental Group's NPI number?
- Hayashi & Duffala Dental Group's National Provider Identifier (NPI) is 1598937401, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Hayashi & Duffala Dental Group?
- Hayashi & Duffala Dental Group is classified in the NPPES registry as General Practice Dentistry (Dental Providers).
- Where is Hayashi & Duffala Dental Group located?
- Hayashi & Duffala Dental Group's practice location on file with NPPES is 490 Post St Ste 1220, San Francisco, CA 94102-1309.
- What is Hayashi & Duffala Dental Group's phone number?
- The practice phone number listed in the NPPES registry for Hayashi & Duffala Dental Group is (415) 986-0382.
- Who is the authorized official for Hayashi & Duffala Dental Group?
- The authorized official listed on Hayashi & Duffala Dental Group's NPPES record is James Hayashi, Partner. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Hayashi & Duffala Dental Group's NPI active?
- Yes — Hayashi & Duffala Dental Group's NPI (1598937401) is active in the NPPES registry as of the last update on 2008-04-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.