DR. JOHN GAVEND SONNENBERG PHD
NPI 1023090990
Psychologist - Clinical in Chicago, IL

NPI Status: Active since November 16, 2005

Contact Information

1021 W LAWRENCE AVE
CHICAGO, IL
ZIP 60640
Phone: (773) 989-8313
Fax: (773) 989-9692

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  • Individual
  • Male
  • Psychologist
  • Clinical

About JOHN SONNENBERG

This page provides the complete NPI Profile along with additional information for John Sonnenberg, a provider established in Chicago, Illinois with a medical specialization in Psychologist, focusing in clinical . The healthcare provider is registered in the NPI registry with number 1023090990 assigned on November 2005. The practitioner's primary taxonomy code is 103TC0700X with license number 071005109 (IL). The provider is registered as an individual and his NPI record was last updated 11 years ago.

NPI
1023090990
Provider Name
DR. JOHN GAVEND SONNENBERG PHD
Gender
Male
Entity Type
Individual
Location Address
1021 W LAWRENCE AVE CHICAGO, IL 60640
Location Phone
(773) 989-8313
Location Fax
(773) 989-9692
Mailing Address
1021 W LAWRENCE AVE CHICAGO, IL 60640
Mailing Phone
(773) 989-8313
Mailing Fax
(773) 989-9692
Is Sole Proprietor?
No
Enumeration Date
11-16-2005
Last Update Date
03-12-2015
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A clinical psychologist like John Sonnenberg assesses, diagnoses, and treats mental, emotional, and behavioral disorders. Clinical psychologists help people deal with problems ranging from short-term personal issues to severe, chronic conditions. Clinical psychologists interview patients, give diagnostic tests, provide psychotherapy and design behavior modification programs to help patients.

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Specialty - Primary Taxonomy

The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.

Classification

Psychologist Clinical

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
License No.
071005109
License State
IL
Taxonomy Description
A psychologist who provides continuing and comprehensive mental and behavioral health care for individuals and families; consultation to agencies and communities; training, education and supervision; and research-based practice. It is a specialty in breadth -- one that is broadly inclusive of severe psychopathology -- and marked by comprehensiveness and integration of knowledge and skill from a broad array of disciplines within and outside of psychology proper. The scope of clinical psychology encompasses all ages, multiple diversities and varied systems.

Reviews for DR. JOHN GAVEND SONNENBERG PHD

  • 5 out of 5 stars - Review by DARRYL on October 30, 2023

    NEEDLE IN A HAYSTACK

  • NPI NPI Number Validation

    How NPI Validation Works

    The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

    To verify the NPI 1023090990, we treat the final digit (0) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 60. The final step is to find the difference between that total and the next multiple of ten (60 - 60 = 0).

    Digit-by-digit view

    Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

    Pos 1
    1
    Doubled → 2
    Pos 2
    0
    Unchanged
    Pos 3
    2
    Doubled → 4
    Pos 4
    3
    Unchanged
    Pos 5
    0
    Doubled → 0
    Pos 6
    9
    Unchanged
    Pos 7
    0
    Doubled → 0
    Pos 8
    9
    Unchanged
    Pos 9
    9
    Doubled → 18 → 1 + 8
    Check
    0
    Target digit
    Regular digit Doubled digit Check digit

    Step 1: Double every other digit from the right

    Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

    1 → 2 2 → 4 0 → 0 0 → 0 9 → 18 → 9

    Step 2: Add all digits plus the NPI constant

    Add the transformed values, the unchanged digits, and the constant 24.

    2 + 0 + 4 + 3 + 0 + 9 + 0 + 9 + 1 + 8 + 24 = 60

    Step 3: Find the amount needed to reach the next multiple of 10

    The next multiple of ten after 60 is 60. The difference is the calculated check digit.

    60 - 60 = 0
    This NPI is valid
    The calculated check digit is 0, which matches the last digit of 1023090990.

    Other Providers at the Same Location


    The following 4 providers are registered at the same or a nearby location.

    Nurse Practitioner (Psychiatric/Mental Health)
    1021 W LAWRENCE AVE
    CHICAGO, IL 60640
    Psychologist (Clinical)
    1021 W LAWRENCE AVE
    CHICAGO, IL 60640
    Clinic/Center (Mental Health (Including Community Mental Health Center))
    1021 W LAWRENCE AVE
    CHICAGO, IL 60640
    Counselor (Professional)
    1021 W LAWRENCE AVE
    CHICAGO, IL 60640

    Frequently Asked Questions

    The NPI number assigned to this healthcare provider is 1023090990, enumerated as an "individual" on November 16, 2005.

    The provider is located at 1021 W LAWRENCE AVE CHICAGO, IL 60640 and the phone number is (773) 989-8313.

    Psychologist with taxonomy code 103TC0700X and a focus in Clinical.