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Jeffrey Derflinger, PH.D.
NPI 1023106754 · Clinical Psychologist · Orange, CA
Jeffrey Derflinger, PH.D. is a Clinical Psychologist provider in Orange, CA (NPI 1023106754).
Provider details
- NPI number
- 1023106754
- Entity type
- Individual
- Primary specialty
- Clinical PsychologistBehavioral Health & Social Service Providers
- Credential
- PH.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- PSY16346 (CA)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(90/100 index)
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
746 E Chapman Ave
Orange, CA 92866-1621
Phone: (949) 725-7156
Street-level locationGet directions
Mailing address
746 E Chapman Ave
Orange, CA 92866-1621
Registry dates
- Enumerated
- 2006-10-10
- Last updated
- 2007-07-08
Frequently asked questions
- What is Jeffrey Derflinger's NPI number?
- Jeffrey Derflinger's National Provider Identifier (NPI) is 1023106754, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Jeffrey Derflinger's specialty?
- Jeffrey Derflinger is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).
- Where is Jeffrey Derflinger located?
- Jeffrey Derflinger's practice location on file with NPPES is 746 E Chapman Ave, Orange, CA 92866-1621.
- What is Jeffrey Derflinger's phone number?
- The practice phone number listed in the NPPES registry for Jeffrey Derflinger is (949) 725-7156.
- Is Jeffrey Derflinger's NPI active?
- Yes — Jeffrey Derflinger's NPI (1023106754) 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.