HEIDI HAMERNIK, PH.D. P.C.
NPI 1023229986
Psychologist - Clinical Child & Adolescent in Skokie, IL

NPI Status: Active since May 24, 2007

Contact Information

8707 SKOKIE BLVD.
STE. 210
SKOKIE, IL
ZIP 60077
Phone: (847) 763-9167
Fax: (847) 763-1301

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  • Organization
  • Psychologist
  • Clinical Child & Adolescent

About HEIDI HAMERNIK, PH.D. P.C.

This page provides the complete NPI Profile along with additional information for Heidi Hamernik, Ph.d. P.c., a provider established in Skokie, Illinois operating as a Psychologist, focusing in clinical child & adolescent . The healthcare provider is registered in the NPI registry with number 1023229986 assigned on May 2007. The practitioner's primary taxonomy code is 103TC2200X. The provider is registered as an organization and their NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Dr. Heidi Beth Hamernik Ph.d. (President, Secretary)

NPI
1023229986
Provider Name
HEIDI HAMERNIK, PH.D. P.C.
Entity Type
Organization
Location Address
8707 SKOKIE BLVD. STE. 210 SKOKIE, IL 60077
Location Phone
(847) 763-9167
Location Fax
(847) 763-1301
Mailing Address
8707 SKOKIE BLVD. STE. 210 SKOKIE, IL 60077
Mailing Phone
(847) 763-9167
Mailing Fax
(847) 763-1301
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-24-2007
Last Update Date
09-11-2025
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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 Child & Adolescent

Taxonomy Code
103TC2200X
Type
Behavioral Health & Social Service Providers
License State
IL
Taxonomy Description
A psychologist who develops and applies scientific knowledge to the delivery of psychological services to infants, toddlers, children and adolescents within their social context. Of particular importance to the specialty of clinical child psychology is an understanding of the basic psychological needs of children and adolescents, and how the family and other social contexts influence the socio-emotional adjustment, cognitive development, behavioral adaptation and health status of children and adolescents.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1103TC0700XBehavioral Health & Social Service Providers

Psychologist
Clinical

(IL)

Group Taxonomy 193400000X MULTIPLE SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

DR. HEIDI BETH HAMERNIK PH.D.

Authorized Official Title
PRESIDENT, SECRETARY
Authorized Official Phone
(847) 763-9167

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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 1023229986, we treat the final digit (6) 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 64. The final step is to find the difference between that total and the next multiple of ten (70 - 64 = 6).

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
2
Doubled → 4
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
9
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
6
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 2 → 4 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 0 + 4 + 3 + 4 + 2 + 1 + 8 + 9 + 1 + 6 + 24 = 64

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

The next multiple of ten after 64 is 70. The difference is the calculated check digit.

70 - 64 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1023229986.

Other Providers at the Same Location


The following 1 provider is registered at the same or a nearby location.

Psychologist
8707 SKOKIE BLVD., STE. 210
SKOKIE, IL 60077

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1023229986, enumerated as an "organization" on May 24, 2007.

The provider is located at 8707 SKOKIE BLVD. STE. 210 SKOKIE, IL 60077 and the phone number is (847) 763-9167.

Psychologist with taxonomy code 103TC2200X and a focus in Clinical Child & Adolescent.