Patrick Duffner
NPI 1356203285 · Marriage & Family Therapist · San Diego, CA
Patrick Duffner is a Marriage & Family Therapist provider in San Diego, CA (NPI 1356203285).
Provider details
- NPI number
- 1356203285
- Entity type
- Individual
- Primary specialty
- Marriage & Family TherapistBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- 151379 (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
Under 1 yr in 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
- 2025-12-01
- Last updated
- 2025-12-01
- Certified
- 2025-11-30
Frequently asked questions
- What is Patrick Duffner's NPI number?
- Patrick Duffner's National Provider Identifier (NPI) is 1356203285, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Patrick Duffner's specialty?
- Patrick Duffner is listed in the NPPES registry with a primary specialty of Marriage & Family Therapist (Behavioral Health & Social Service Providers).
- Where is Patrick Duffner located?
- Patrick Duffner's practice location on file with NPPES is 5252 Balboa Ave Ste 408, San Diego, CA 92117-6939.
- What is Patrick Duffner's phone number?
- The practice phone number listed in the NPPES registry for Patrick Duffner is (858) 333-6856.
- Is Patrick Duffner's NPI active?
- Yes — Patrick Duffner's NPI (1356203285) is active in the NPPES registry as of the last update on 2025-12-01.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.