Erin Duffy
NPI 1821783291 · Marriage & Family Therapist · San Clemente, CA
Erin Duffy is a Marriage & Family Therapist provider in San Clemente, CA (NPI 1821783291).
Provider details
- NPI number
- 1821783291
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 116506 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
3 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
- 2023-04-10
- Last updated
- 2023-04-19
- Certified
- 2023-04-19
Frequently asked questions
- What is Erin Duffy's NPI number?
- Erin Duffy's National Provider Identifier (NPI) is 1821783291, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Erin Duffy's specialty?
- Erin Duffy is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Erin Duffy located?
- Erin Duffy's practice location on file with NPPES is 3551 Camino Mira Costa, San Clemente, CA 92672-3508.
- What is Erin Duffy's phone number?
- The practice phone number listed in the NPPES registry for Erin Duffy is (949) 272-4444.
- Is Erin Duffy's NPI active?
- Yes — Erin Duffy's NPI (1821783291) is active in the NPPES registry as of the last update on 2023-04-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.