KATHRYN OSULLIVAN
NPI 1154259539
Counselor in Shelburne, VT

NPI Status: Active since May 13, 2026

Contact Information

5138 SHELBURNE RD STE 12
SHELBURNE, VT
ZIP 05482
Phone: (518) 538-2424

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  • Individual
  • Female
  • Counselor

About KATHRYN OSULLIVAN

This page provides the complete NPI Profile along with additional information for Kathryn Osullivan, a provider established in Shelburne, Vermont with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1154259539 assigned on May 2026. The practitioner's primary taxonomy code is 101Y00000X. The provider is registered as an individual and her NPI record was last updated May 2026. 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
1154259539
Provider Name
KATHRYN OSULLIVAN
Gender
Female
Entity Type
Individual
Location Address
5138 SHELBURNE RD STE 12 SHELBURNE, VT 05482
Location Phone
(518) 538-2424
Mailing Address
56 MORELLEN LN APT 1 COLCHESTER, VT 05446
Mailing Phone
(518) 538-2424
Is Sole Proprietor?
Yes
Enumeration Date
05-13-2026
Last Update Date
05-13-2026
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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

Taxonomy Code
101Y00000X
Type
Behavioral Health & Social Service Providers
License State
VT
Taxonomy Description
A provider who is trained and educated in the performance of behavior health services through interpersonal communications and analysis. Training and education at the specialty level usually requires a master's degree and clinical experience and supervision for licensure or certification.

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 1154259539, we treat the final digit (9) 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 9).

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

Step 2: Add all digits plus the NPI constant

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

2 + 1 + 1 + 0 + 4 + 4 + 5 + 1 + 8 + 5 + 6 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1154259539.

Other Providers at the Same Location


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

Social Worker (Clinical)
5138 SHELBURNE RD STE 12
SHELBURNE, VT 05482

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1154259539, enumerated as an "individual" on May 13, 2026.

The provider is located at 5138 SHELBURNE RD STE 12 SHELBURNE, VT 05482 and the phone number is (518) 538-2424.

Counselor with taxonomy code 101Y00000X.