HEIDI KENNEY MARKS
NPI 1659742187
Counselor - Addiction (Substance Use Disorder) in Salt Lake City, UT
NPI Status: Active since October 09, 2015
Contact Information
2001 S STATE ST
ST S2300
SALT LAKE CITY, UT
ZIP 84190
Phone: (385) 468-4738
- Individual
- Female
- Counselor
- Addiction (Substance Use Disorder)
About HEIDI MARKS
This page provides the complete NPI Profile along with additional information for Heidi Marks, a provider established in Salt Lake City, Utah with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1659742187 assigned on October 2015. The practitioner's primary taxonomy code is 101YA0400X with license number 1113273-6018 (UT). The provider is registered as an individual and her NPI record was last updated April 2026.
- NPI
- 1659742187
- Provider Name
- HEIDI KENNEY MARKS
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 2001 S STATE ST ST S2300 SALT LAKE CITY, UT 84190
- Location Phone
- (385) 468-4738
- Mailing Address
- 7601 S REDWOOD RD WEST JORDAN, UT 84084
- Mailing Phone
- (801) 233-8670
- Is Sole Proprietor?
- No
- Enumeration Date
- 10-09-2015
- Last Update Date
- 04-16-2026
- Code Navigator
A Substance Abuse or Addiction Counselor like Heidi Marks advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.
Location Map
Secondary Locations
- 7601 S Redwood Rd
West Jordan, UT 84084
(801) 233-8670
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 Addiction (Substance Use Disorder)
- Taxonomy Code
- 101YA0400X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 1113273-6018
- License State
- UT
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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 1659742187, 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
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.
Other Providers at the Same Location
The following 9 providers are registered at the same or a nearby location.
SALT LAKE CITY, UT 84190
SALT LAKE CITY, UT 84190
SALT LAKE CITY, UT 84190
SALT LAKE CITY, UT 84190
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1659742187, enumerated as an "individual" on October 09, 2015.
The provider is located at 2001 S STATE ST ST S2300 SALT LAKE CITY, UT 84190 and the phone number is (385) 468-4738.
Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).
