DESERT WILLOW THERAPY, LLC
NPI 1366379745
Counselor - Mental Health in Tempe, AZ

NPI Status: Active since May 07, 2026

Contact Information

918 S MILL AVE
TEMPE, AZ
ZIP 85281
Phone: (623) 282-4446

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  • Organization
  • Counselor
  • Mental Health

About DESERT WILLOW THERAPY, LLC

This page provides the complete NPI Profile along with additional information for Desert Willow Therapy, Llc, a provider established in Tempe, Arizona operating as a Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1366379745 assigned on May 2026. The practitioner's primary taxonomy code is 101YM0800X. The provider is registered as an organization and their NPI record was last updated May 2026. 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 Sarah Hartung Lpc, Rdt/bct (Psychotherapist)

NPI
1366379745
Provider Name
DESERT WILLOW THERAPY, LLC
Entity Type
Organization
Location Address
918 S MILL AVE TEMPE, AZ 85281
Location Phone
(623) 282-4446
Mailing Address
3709 S DENNIS DR TEMPE, AZ 85282
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
05-07-2026
Last Update Date
05-07-2026
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A mental health counselor like Desert Willow Therapy, Llc provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers

Group Taxonomy 193400000X 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

SARAH HARTUNG LPC, RDT/BCT

Authorized Official Title
PSYCHOTHERAPIST
Authorized Official Phone
(623) 282-4446

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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 1366379745, we treat the final digit (5) 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 75. The final step is to find the difference between that total and the next multiple of ten (80 - 75 = 5).

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
3
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
6
Unchanged
Pos 5
3
Doubled → 6
Pos 6
7
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
Unchanged
Pos 9
4
Doubled → 8
Check
5
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 6 → 12 → 3 3 → 6 9 → 18 → 9 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 3 + 1 + 2 + 6 + 6 + 7 + 1 + 8 + 7 + 8 + 24 = 75

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

The next multiple of ten after 75 is 80. The difference is the calculated check digit.

80 - 75 = 5
This NPI is valid
The calculated check digit is 5, which matches the last digit of 1366379745.

Other Providers at the Same Location


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

Advanced Practice Midwife
918 S MILL AVE
TEMPE, AZ 85281

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1366379745, enumerated as an "organization" on May 07, 2026.

The provider is located at 918 S MILL AVE TEMPE, AZ 85281 and the phone number is (623) 282-4446.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.