MRS. TIFFANI HOLDGATE LPC
NPI 1558142398
Counselor - Mental Health in Charleston, SC

NPI Status: Active since October 09, 2023

Contact Information

21 GAMECOCK AVE STE E
CHARLESTON, SC
ZIP 29407
Phone: (843) 417-0817

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NPPES record last updated: September 22, 2025. Verified against the NPPES registry weekly; last sync: July 12, 2026.

  • Individual
  • Female
  • Counselor
  • Mental Health

About TIFFANI HOLDGATE

This page provides the complete NPI Profile along with additional information for Tiffani Holdgate, a provider established in Charleston, South Carolina with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1558142398 assigned on October 2023. The practitioner's primary taxonomy code is 101YM0800X with license number 11231 (SC). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1558142398
Provider Name
MRS. TIFFANI HOLDGATE LPC
Gender
Female
Entity Type
Individual
Location Address
21 GAMECOCK AVE STE E CHARLESTON, SC 29407
Location Phone
(843) 417-0817
Mailing Address
1307 FORT LAMAR RD CHARLESTON, SC 29412
Is Sole Proprietor?
No
Enumeration Date
10-09-2023
Last Update Date
09-22-2025
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A mental health counselor like Tiffani Holdgate 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.

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

Counselor Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
11231
License State
SC

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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 1558142398, we treat the final digit (8) 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 62. The final step is to find the difference between that total and the next multiple of ten (70 - 62 = 8).

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
5
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
8
Unchanged
Pos 5
1
Doubled → 2
Pos 6
4
Unchanged
Pos 7
2
Doubled → 4
Pos 8
3
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
8
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 5 → 10 → 1 1 → 2 2 → 4 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 0 + 8 + 2 + 4 + 4 + 3 + 1 + 8 + 24 = 62

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

The next multiple of ten after 62 is 70. The difference is the calculated check digit.

70 - 62 = 8
This NPI is valid
The calculated check digit is 8, which matches the last digit of 1558142398.

Other Providers at the Same Location


The following 10 providers are registered at the same or a nearby location.

Physician Assistant
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor (Professional)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor (Professional)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Clinic/Center (Mental Health (Including Community Mental Health Center))
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor (Mental Health)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor (Mental Health)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Social Worker (Clinical)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Counselor (Mental Health)
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407
Marriage & Family Therapist
21 GAMECOCK AVE STE E
CHARLESTON, SC 29407

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1558142398, enumerated as an "individual" on October 09, 2023.

The provider is located at 21 GAMECOCK AVE STE E CHARLESTON, SC 29407 and the phone number is (843) 417-0817.

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