John Eliot Leffel, PSY.D., L.C.P.

Primary specialty

Clinical PsychologistTaxonomy code 103TC0700X

License

071.008161 Issued in IL

Practice address

7903 Lowell Ave
Skokie, IL 60076-3537

Phone

(917) 403-4631

NPI assigned

Oct 15, 2010

Last updated

Sep 29, 2026By the provider in NPPES

Sex

Male

Sole proprietor

Yes

Registry information is reported by the provider to CMS and is not verified. About this source

Specialties & licenses 1

Addresses

Medicare fee-for-service enrollment

Enrolled in IL

Eligible to order & refer

• Part B services: Yes
• Medical equipment: Yes
• Home health: No
• Power mobility devices: No
• Hospice: No

Green means eligible to order or refer.

Enrollment records 1

Specialty

Clinical Psychologist

Education

Other, 2009

Medicare assignment

Accepts the Medicare-approved amount as payment in full

Telehealth

Offers telehealth services

Practice addresses (Care Compare)

Medicare enrollment (NPD)

Enrolled

State licenses

Practice roles

Locations

Organizations this provider is connected to: Medicare benefit reassignments (the organization bills Medicare for this provider’s services), Care Compare group memberships, National Provider Directory roles and organizations whose NPPES authorized official is this provider.

• Ethos Psychological Services LLC

  • Clinical Psychologist
  • Park Ridge, IL
  • NPI 1316466857
  Medicare reassignment NPD Authorized official
• Hanna Psychological Services, PC

  • Clinical Psychologist
  • Park Ridge, IL
  • NPI 1427430008
  NPD
• Hilltop Haven Inc

  • Clinical Neuropsychologist
  • Richmond, IL
  • NPI 1477037133
  NPD (past)
• Mental Health Solutions, P.C.

  • Clinical Psychologist
  • Barrington, IL
  • NPI 1487891198
  NPD (past)

The complete NPPES record for this NPI in the NPI Registry API format.

{
    "created_epoch": "1287100800000",
    "enumeration_type": "NPI-1",
    "last_updated_epoch": "1790640000000",
    "number": "1205146958",
    "addresses": [
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "MAILING",
            "address_type": "DOM",
            "address_1": "7903 LOWELL AVE",
            "city": "SKOKIE",
            "state": "IL",
            "postal_code": "600763537",
            "telephone_number": "917-403-4631"
        },
        {
            "country_code": "US",
            "country_name": "United States",
            "address_purpose": "LOCATION",
            "address_type": "DOM",
            "address_1": "7903 LOWELL AVE",
            "city": "SKOKIE",
            "state": "IL",
            "postal_code": "600763537",
            "telephone_number": "917-403-4631"
        }
    ],
    "practiceLocations": [],
    "basic": {
        "last_name": "LEFFEL",
        "first_name": "JOHN",
        "middle_name": "ELIOT",
        "name_prefix": "Dr.",
        "credential": "PSY.D., L.C.P.",
        "sole_proprietor": "YES",
        "sex": "M",
        "enumeration_date": "2010-10-15",
        "last_updated": "2026-09-29",
        "certification_date": "2022-05-03",
        "status": "A"
    },
    "taxonomies": [
        {
            "code": "103TC0700X",
            "taxonomy_group": "",
            "desc": "Psychologist, Clinical",
            "state": "IL",
            "license": "071.008161",
            "primary": true
        }
    ],
    "identifiers": [],
    "endpoints": [],
    "other_names": []
}

• Hyo Lee, DDS
• Jin Woo Lee, D.C
• Matthew Alan Lee, PHARMD
• Noah Ho Lee, PA-C
• Christie L. Leensvaart, ATC
• Legends Wound Care LLC
• Claudia Lehene, MS, PA-C
• Kristina Alana Lehrfield
• Danielle Jean Lemon, OT
• Morgan Lempko

• Clinical Psychologist in Skokie, IL
• Providers in Skokie, IL by specialty
• Clinical Psychologist in Illinois

• NPPES NPI Registry (CMS): identity, addresses, specialties, licenses, identifiers and endpoints. Last updated by the provider on Sep 29, 2026; self-reported and not verified by CMS. Specialty names from the NUCC taxonomy.
• Medicare enrollment (CMS PECOS): enrollments, PAC IDs and benefit reassignments; Order and Referring.
• Medicare Care Compare (CMS): clinician profile, group practices, facility affiliations, MIPS scores and star ratings.
• National Provider Directory (CMS): practice roles, locations, licenses, networks and endpoints.

Verify at the official NPI Registry.