TONJA C. CHRISTOPHER RMHCI
NPI 1821892860
Counselor - Mental Health in Winter Springs, FL

NPI Status: Active since April 01, 2025

Contact Information

4016 GARDEN OAK CT
WINTER SPRINGS, FL
ZIP 32708
Phone: (321) 320-4603

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  • Individual
  • Female
  • Counselor
  • Mental Health

About TONJA CHRISTOPHER

This page provides the complete NPI Profile along with additional information for Tonja Christopher, a provider established in Winter Springs, Florida with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1821892860 assigned on April 2025. The practitioner's primary taxonomy code is 101YM0800X with license number 26273 (FL). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1821892860
Provider Name
TONJA C. CHRISTOPHER RMHCI
Gender
Female
Entity Type
Individual
Location Address
4016 GARDEN OAK CT WINTER SPRINGS, FL 32708
Location Phone
(321) 320-4603
Mailing Address
4016 GARDEN OAK CT WINTER SPRINGS, FL 32708
Is Sole Proprietor?
Yes
Enumeration Date
04-01-2025
Last Update Date
04-15-2025
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A mental health counselor like Tonja Christopher 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.
26273
License State
FL

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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 1821892860, we treat the final digit (0) 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 70. The final step is to find the difference between that total and the next multiple of ten (70 - 70 = 0).

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
8
Unchanged
Pos 3
2
Doubled → 4
Pos 4
1
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
9
Unchanged
Pos 7
2
Doubled → 4
Pos 8
8
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
0
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 2 → 4 8 → 16 → 7 2 → 4 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 4 + 1 + 1 + 6 + 9 + 4 + 8 + 1 + 2 + 24 = 70

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

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

70 - 70 = 0
This NPI is valid
The calculated check digit is 0, which matches the last digit of 1821892860.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1821892860, enumerated as an "individual" on April 01, 2025.

The provider is located at 4016 GARDEN OAK CT WINTER SPRINGS, FL 32708 and the phone number is (321) 320-4603.

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