DR. GARY B WALLS PH.D.
NPI 1427144419
Psychologist in Chicago, IL

NPI Status: Active since October 05, 2006

Contact Information

30 N MICHIGAN AVE
#718
CHICAGO, IL
ZIP 60602
Phone: (312) 802-7261

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  • Individual
  • Male
  • Psychologist

About GARY WALLS

This page provides the complete NPI Profile along with additional information for Gary Walls, a provider established in Chicago, Illinois with a medical specialization in Psychologist. The healthcare provider is registered in the NPI registry with number 1427144419 assigned on October 2006. The practitioner's primary taxonomy code is 103T00000X. The provider is registered as an individual and his NPI record was last updated 18 years ago.

NPI
1427144419
Provider Name
DR. GARY B WALLS PH.D.
Gender
Male
Entity Type
Individual
Location Address
30 N MICHIGAN AVE #718 CHICAGO, IL 60602
Location Phone
(312) 802-7261
Mailing Address
30 N MICHIGAN AVE #718 CHICAGO, IL 60602
Mailing Phone
(312) 802-7261
Is Sole Proprietor?
Yes
Enumeration Date
10-05-2006
Last Update Date
04-19-2008
Code Navigator

A psychologist like Gary Walls studies cognitive, emotional, social processes and behavior by observing, interpreting, and recording how people relate to one another and to their environments. Psychologists gather information and evaluate behavior through controlled laboratory experiments, psychoanalysis, psychotherapy or through personality, performance, aptitude, or intelligence tests, and use this information when testing theories in their research or when treating patients.

Location Map

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

Taxonomy Code
103T00000X
Type
Behavioral Health & Social Service Providers
License State
IL
Taxonomy Description
A psychologist is an individual who is licensed to practice psychology which is defined as the observation, description, evaluation, interpretation, and modification of human behavior by the application of psychological principles, methods, and procedures, for the purpose of preventing or eliminating symptomatic, maladaptive, or undesired behavior and of enhancing interpersonal relationships, work and life adjustment, personal effectiveness, behavioral health, and mental health. The practice of psychology includes, but is not limited to, psychological testing and the evaluation or assessment of personal characteristics, such as intelligence, personality, abilities, interests, aptitudes, and neuropsychological functioning; counseling, psychoanalysis, psychotherapy, hypnosis, biofeedback, and behavior analysis and therapy; diagnosis and treatment of mental and emotional disorder or disability, alcoholism and substance abuse, disorders of habit or conduct, as well as of the psychological aspects of physical illness, accident, injury, or disability; and psycheducational evaluation, therapy, remediation, and consultation. Psychological services may be rendered to individuals, families, groups and the public.

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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 1427144419, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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
4
Unchanged
Pos 3
2
Doubled → 4
Pos 4
7
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
4
Doubled → 8
Pos 8
4
Unchanged
Pos 9
1
Doubled → 2
Check
9
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 1 → 2 4 → 8 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 4 + 7 + 2 + 4 + 8 + 4 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1427144419.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Psychiatry & Neurology (Psychiatry)
30 N MICHIGAN AVE, STE 501
CHICAGO, IL 60602
Psychologist (Psychoanalysis)
30 N MICHIGAN AVE, SUITE 1900
CHICAGO, IL 60602
Obstetrics & Gynecology
30 N MICHIGAN AVE, SUITE 1410
CHICAGO, IL 60602
Counselor (Professional)
30 N MICHIGAN AVE, #917
CHICAGO, IL 60602
Counselor (Mental Health)
30 N MICHIGAN AVE, SUITE 1516
CHICAGO, IL 60602
Marriage & Family Therapist
30 N MICHIGAN AVE, SUITE 1514
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 506
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1922
CHICAGO, IL 60602
Dentist (General Practice)
30 N MICHIGAN AVE, STE. 1821
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1212
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1206
CHICAGO, IL 60602
Podiatrist
30 N MICHIGAN AVE, SUITE 1229
CHICAGO, IL 60602
Social Worker (Clinical)
30 N MICHIGAN AVE, SUITE 1618
CHICAGO, IL 60602
Counselor (Professional)
30 N MICHIGAN AVE, SUITE 1819
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1828
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1018
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, SUITE 1103
CHICAGO, IL 60602
Psychiatry & Neurology (Psychiatry)
30 N MICHIGAN AVE, STE 1909
CHICAGO, IL 60602
Psychologist (Clinical)
30 N MICHIGAN AVE, STE 1001
CHICAGO, IL 60602

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1427144419, enumerated as an "individual" on October 05, 2006.

The provider is located at 30 N MICHIGAN AVE #718 CHICAGO, IL 60602 and the phone number is (312) 802-7261.

Psychologist with taxonomy code 103T00000X.