Deborah Diferdinando, PSY.D., MFT, CADCII
Clinical Psychologist · Carlsbad, CA
Deborah Diferdinando, PSY.D., MFT, CADCII is a clinical psychologist with a practice address in Carlsbad, California, and NPI 1609978931, issued on Sep 5, 2006. Check the license (California PSY22608, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Deborah Diferdinando
- Credential
- PSY.D., MFT, CADCII
- Primary taxonomy
- Clinical Psychologist 103TC0700X
- License numbers
- PSY22608 CA
A8381801 CA
MFC37170 CA
Self-reported in NPPES; status is on the state search - Practice location
- 2564 State St, Carlsbad, CA 92008
- Phone
- (760) 822-4877
- Enumerated
- Sep 5, 2006
- Record last updated
- Aug 16, 2009 (not updated in 17 years: call before relying on the address or phone)
- Fax
- (760) 842-1313
- Entity
- Type 1 · individual
Also registered at 2564 State St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Deborah Diferdinando in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license PSY22608Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69 clinical psychologist records list a practice address in Carlsbad
They are 69 of the 3,411 NPPES records with a practice address in Carlsbad, and 12,647 clinical psychologist records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 69 in Carlsbad → All 12,647 in California → Every provider in Carlsbad →
Other clinical psychologist records in California
- Tanya Aaen, PH.D.Martinez, CA1477518561
- Jack Aamot, PSY.D.Napa, CA1770711210
- Brian Abary, PSY.DLos Angeles, CA1538354832
- Tatevik Abaryan, PH.D.Pacoima, CA1952682619
- Liana Abascal, PH.D.San Diego, CA1073740569
- Jessica Abdalla, PHDWalnut Creek, CA1558069211
- Mohamed Abdallah, PSY.DEl Centro, CA1912430851
- Megan Abdolrashidi, PSYDGilroy, CA1093293094
- Keri Abdullah, PH.D.San Diego, CA1699840587
- Qutayba Abdullatif, PH.D.Pasadena, CA1134667751
Common questions
What is Deborah Diferdinando, PSY.D., MFT, CADCII's NPI number?
Deborah Diferdinando, PSY.D., MFT, CADCII's National Provider Identifier (NPI) is 1609978931, issued on Sep 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Deborah Diferdinando, PSY.D., MFT, CADCII located?
The NPPES record lists a practice address at 2564 State St, Carlsbad, CA, 92008. Phone: (760) 822-4877. Providers update this record themselves, so call before visiting.
How can I verify Deborah Diferdinando, PSY.D., MFT, CADCII's license?
NPPES lists California license number PSY22608, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.