HALEY ELISABETH KROLL
NPI 1235019381
Counselor - Mental Health in Herndon, VA

NPI Status: Active since September 08, 2025

Contact Information

1043 STERLING RD STE 203
HERNDON, VA
ZIP 20170
Phone: (516) 493-8693

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  • Individual
  • Female
  • Counselor
  • Mental Health

About HALEY KROLL

This page provides the complete NPI Profile along with additional information for Haley Kroll, a provider established in Herndon, Virginia with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1235019381 assigned on September 2025. The practitioner's primary taxonomy code is 101YM0800X with license number 0704015498 (VA). The provider is registered as an individual and her NPI record was last updated one year ago. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization.

NPI
1235019381
Provider Name
HALEY ELISABETH KROLL
Gender
Female
Entity Type
Individual
Location Address
1043 STERLING RD STE 203 HERNDON, VA 20170
Location Phone
(516) 493-8693
Mailing Address
2251 EISENHOWER AVE APT 510 ALEXANDRIA, VA 22314
Mailing Phone
(516) 493-8693
Is Sole Proprietor?
Yes
Enumeration Date
09-08-2025
Last Update Date
09-08-2025
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A mental health counselor like Haley Kroll 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
License No.
0704015498
License State
VA

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.

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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 1235019381, we treat the final digit (1) 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 59. The final step is to find the difference between that total and the next multiple of ten (60 - 59 = 1).

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
2
Unchanged
Pos 3
3
Doubled → 6
Pos 4
5
Unchanged
Pos 5
0
Doubled → 0
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
3
Unchanged
Pos 9
8
Doubled → 16 → 1 + 6
Check
1
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 3 → 6 0 → 0 9 → 18 → 9 8 → 16 → 7

Step 2: Add all digits plus the NPI constant

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

2 + 2 + 6 + 5 + 0 + 1 + 1 + 8 + 3 + 1 + 6 + 24 = 59

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

The next multiple of ten after 59 is 60. The difference is the calculated check digit.

60 - 59 = 1
This NPI is valid
The calculated check digit is 1, which matches the last digit of 1235019381.

Other Providers at the Same Location


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

Counselor (Mental Health)
1043 STERLING RD STE 203
HERNDON, VA 20170

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1235019381, enumerated as an "individual" on September 08, 2025.

The provider is located at 1043 STERLING RD STE 203 HERNDON, VA 20170 and the phone number is (516) 493-8693.

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