DR. MARK JOSEPH ZERWIC PH.D.
NPI 1073619086
Psychologist - Clinical in Chicago, IL

NPI Status: Active since September 16, 2006

Contact Information

820 S DAMEN AVE
PSYCHOLOGY #116B
CHICAGO, IL
ZIP 60612
Phone: (312) 569-6955
Fax: (312) 569-6296

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  • Individual
  • Male
  • Psychologist
  • Clinical

About MARK ZERWIC

This page provides the complete NPI Profile along with additional information for Mark Zerwic, 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 1073619086 assigned on September 2006. The practitioner's primary taxonomy code is 103TC0700X. The provider is registered as an individual and his NPI record was last updated 19 years ago.

NPI
1073619086
Provider Name
DR. MARK JOSEPH ZERWIC PH.D.
Gender
Male
Entity Type
Individual
Location Address
820 S DAMEN AVE PSYCHOLOGY #116B CHICAGO, IL 60612
Location Phone
(312) 569-6955
Location Fax
(312) 569-6296
Mailing Address
3508 LAWSON RD GLENVIEW, IL 60026
Mailing Phone
(847) 562-0757
Is Sole Proprietor?
No
Enumeration Date
09-16-2006
Last Update Date
07-08-2007
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A clinical psychologist like Mark Zerwic 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.

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 Clinical

Taxonomy Code
103TC0700X
Type
Behavioral Health & Social Service Providers
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.

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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 1073619086, 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 54. The final step is to find the difference between that total and the next multiple of ten (60 - 54 = 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
7
Doubled → 14 → 1 + 4
Pos 4
3
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
0
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 7 → 14 → 5 6 → 12 → 3 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 + 1 + 4 + 3 + 1 + 2 + 1 + 1 + 8 + 0 + 1 + 6 + 24 = 54

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

The next multiple of ten after 54 is 60. The difference is the calculated check digit.

60 - 54 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1073619086.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

General Acute Care Hospital (Critical Access)
820 S DAMEN AVE
CHICAGO, IL 60612
Pharmacist
820 S DAMEN AVE
CHICAGO, IL 60612
Internal Medicine
820 S DAMEN AVE
CHICAGO, IL 60612
Nurse Practitioner
820 S DAMEN AVE
CHICAGO, IL 60612
Clinical Nurse Specialist (Critical Care Medicine)
820 S DAMEN AVE, ROOM 4230
CHICAGO, IL 60612
Nurse Practitioner (Adult Health)
820 S DAMEN AVE, MC 118
CHICAGO, IL 60612
Registered Nurse (Psychiatric/Mental Health, Adult)
820 S DAMEN AVE
CHICAGO, IL 60612
Nurse Practitioner
820 S DAMEN AVE, #118
CHICAGO, IL 60612
Nurse Practitioner (Adult Health)
820 S DAMEN AVE
CHICAGO, IL 60612
Nurse Practitioner
820 S DAMEN AVE, NURSING-118
CHICAGO, IL 60612
Registered Nurse (Psychiatric/Mental Health, Adult)
820 S DAMEN AVE
CHICAGO, IL 60612
Nurse Practitioner
820 S DAMEN AVE, EMPLOYEE HEALTH
CHICAGO, IL 60612
Nurse Anesthetist, Certified Registered
820 S DAMEN AVE, DEPT OF ANESTHESIA
CHICAGO, IL 60612
Nurse Practitioner (Family)
820 S DAMEN AVE, JBVAMC (11F)
CHICAGO, IL 60612
Family Medicine (Adult Medicine)
820 S DAMEN AVE
CHICAGO, IL 60612
Psychologist (Clinical)
820 S DAMEN AVE
CHICAGO, IL 60612
Occupational Therapist (Neurorehabilitation)
820 S DAMEN AVE, PM&R #117
CHICAGO, IL 60612
Optometrist
820 S DAMEN AVE, JESSE BROWN VAMC, 170-F
CHICAGO, IL 60612
Physical Medicine & Rehabilitation
820 S DAMEN AVE, M/C 117, PM&R
CHICAGO, IL 60612
Physical Therapist
820 S DAMEN AVE
CHICAGO, IL 60612

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1073619086, enumerated as an "individual" on September 16, 2006.

The provider is located at 820 S DAMEN AVE PSYCHOLOGY #116B CHICAGO, IL 60612 and the phone number is (312) 569-6955.

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