Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 30 days.

ROBERT W REHAK JR. LCSW
NPI 1194708537
Social Worker in Prescott, AZ

Active since November 21, 2005
642 DAMERON DR, HILLSIDE CLINIC, PRESCOTT, AZ 86301(928) 445-5211(928) 776-8484 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: July 19, 2026.

  • Individual
  • Male
  • Social Worker

About ROBERT REHAK

This page provides the complete NPI Profile along with additional information for Robert Rehak, a provider established in Prescott, Arizona with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1194708537 assigned on November 2005. The practitioner's primary taxonomy code is 104100000X with license number LCSW1317 (AZ). The provider is registered as an individual and his NPI record was last updated July 2026.

NPI
1194708537
Provider Name
ROBERT W REHAK JR. LCSW
Gender
Male
Entity Type
Individual
Location Address
642 DAMERON DR HILLSIDE CLINIC PRESCOTT, AZ 86301
Location Phone
(928) 445-5211
Location Fax
(928) 776-8484
Mailing Address
642 DAMERON DR PRESCOTT, AZ 86301
Mailing Phone
(928) 445-5211
Mailing Fax
(928) 776-8484
Is Sole Proprietor?
No
Enumeration Date
11-21-2005
Last Update Date
07-13-2026
Code Navigator

A social worker like Robert Rehak helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.

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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
LCSW1317
License State
AZ
Taxonomy Description
A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.

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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 1194708537, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
1
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
4
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
0
Unchanged
Pos 7
8
Doubled → 16 → 1 + 6
Pos 8
5
Unchanged
Pos 9
3
Doubled → 6
Check
7
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 9 → 18 → 9 7 → 14 → 5 8 → 16 → 7 3 → 6

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 8 + 4 + 1 + 4 + 0 + 1 + 6 + 5 + 6 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1194708537.

Other Providers at the Same Location


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

Clinical Nurse Specialist (Psychiatric/Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Professional)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Professional)
642 DAMERON DR
PRESCOTT, AZ 86301
Pharmacist (Psychiatric)
642 DAMERON DR
PRESCOTT, AZ 86301
Pharmacy Technician
642 DAMERON DR
PRESCOTT, AZ 86301
Pharmacy Technician
642 DAMERON DR
PRESCOTT, AZ 86301
Pharmacy Technician
642 DAMERON DR
PRESCOTT, AZ 86301
Pharmacist (Psychiatric)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Professional)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Social Worker (Clinical)
642 DAMERON DR
PRESCOTT, AZ 86301
Nurse Practitioner (Psychiatric/Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Addiction (Substance Use Disorder))
642 DAMERON DR
PRESCOTT, AZ 86301
Residential Treatment Facility, Emotionally Disturbed Children
642 DAMERON DR
PRESCOTT, AZ 86301
Registered Nurse (Psychiatric/Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Counselor (Professional)
642 DAMERON DR, HILLSIDE CENTER
PRESCOTT, AZ 86301
Counselor (Professional)
642 DAMERON DR, WEST YAVAPAI GUIDANCE CLINIC INC HILLSIDE CD
PRESCOTT, AZ 86301
Registered Nurse (Psychiatric/Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Registered Nurse (Psychiatric/Mental Health)
642 DAMERON DR
PRESCOTT, AZ 86301
Psychiatry & Neurology (Psychiatry)
642 DAMERON DR
PRESCOTT, AZ 86301

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1194708537, enumerated as an "individual" on November 21, 2005.

The provider is located at 642 DAMERON DR HILLSIDE CLINIC PRESCOTT, AZ 86301 and the phone number is (928) 445-5211.

Social Worker with taxonomy code 104100000X.