KARLA ALEXANDRA VITERI BLACKWELL MS, NCC
NPI 1619829793
Counselor - Mental Health in Essex, VT

NPI Status: Active since February 11, 2026

Contact Information

9 SYDNEY DR
ESSEX, VT
ZIP 05452
Phone: (802) 503-3716

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  • Individual
  • Female
  • Counselor
  • Mental Health

About KARLA VITERI BLACKWELL

This page provides the complete NPI Profile along with additional information for Karla Viteri Blackwell, a provider established in Essex, Vermont with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1619829793 assigned on February 2026. The practitioner's primary taxonomy code is 101YM0800X with license number 097.0136376 (VT). The provider is registered as an individual and her NPI record was last updated February 2026.

NPI
1619829793
Provider Name
KARLA ALEXANDRA VITERI BLACKWELL MS, NCC
Other Name
KARLA BLACKWELL MS, NCC
Other Name Type
Professional Name (2)
Gender
Female
Entity Type
Individual
Location Address
9 SYDNEY DR ESSEX, VT 05452
Location Phone
(802) 503-3716
Mailing Address
9 SYDNEY DR ESSEX, VT 05452
Mailing Phone
(802) 503-3716
Is Sole Proprietor?
No
Enumeration Date
02-11-2026
Last Update Date
02-11-2026
Code Navigator

A mental health counselor like Karla Viteri Blackwell 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.
097.0136376
License State
VT

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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 1619829793, we treat the final digit (3) 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 77. The final step is to find the difference between that total and the next multiple of ten (80 - 77 = 3).

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
6
Unchanged
Pos 3
1
Doubled → 2
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
2
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
7
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
Check
3
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 1 → 2 8 → 16 → 7 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 2 + 9 + 1 + 6 + 2 + 1 + 8 + 7 + 1 + 8 + 24 = 77

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

The next multiple of ten after 77 is 80. The difference is the calculated check digit.

80 - 77 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1619829793.

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1619829793, enumerated as an "individual" on February 11, 2026.

The provider is located at 9 SYDNEY DR ESSEX, VT 05452 and the phone number is (802) 503-3716.

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