What is John Duffy's NPI number?

John Duffy's National Provider Identifier (NPI) is 1467023242, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.

What is John Duffy's specialty?

John Duffy is listed in the NPPES registry with a primary specialty of Clinical Psychologist (Behavioral Health & Social Service Providers).

Where is John Duffy located?

John Duffy's practice location on file with NPPES is 10 West Calendar Avenue, La Grange, IL 60525.

What is John Duffy's phone number?

The practice phone number listed in the NPPES registry for John Duffy is (847) 951-8000.

Is John Duffy's NPI active?

Yes — John Duffy's NPI (1467023242) is active in the NPPES registry as of the last update on 2021-07-02.

IndividualActive

John Duffy, PSYD

NPI 1467023242 · Clinical Psychologist · La Grange, IL

John Duffy, PSYD is a Clinical Psychologist provider in La Grange, IL (NPI 1467023242).

Provider details

NPI number: 1467023242
Entity type: Individual
Primary specialty: Clinical PsychologistBehavioral Health & Social Service Providers
Credential: PSYD
Sex: Male
Sole proprietor: Yes
License: 36-4398657 (IL)

Specialties & taxonomies

Clinical PsychologistPrimary103TC0700XLicense 36-4398657 (IL)
Behavioral Health & Social Service Providers

Profile Score

Established profile(62/100 index)

A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.

Registry tenure38% of score
4 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

10 West Calendar Avenue

Suite D

La Grange, IL 60525

Phone: (847) 951-8000

Street-level locationGet directions

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Mailing address