ALYSSA HENNESSY MSW
NPI 1346098498
Specialist in Brewster, NY
NPI Status: Active since May 13, 2024
Contact Information
400 DOANSBURG RD
BREWSTER, NY
ZIP 10509
Phone: (845) 279-2995
- Individual
- Female
- Specialist
About ALYSSA HENNESSY
This page provides the complete NPI Profile along with additional information for Alyssa Hennessy, a provider established in Brewster, New York with a medical specialization in Specialist. The healthcare provider is registered in the NPI registry with number 1346098498 assigned on May 2024. The practitioner's primary taxonomy code is 174400000X. The provider is registered as an individual and her NPI record was last updated January 2026.
- NPI
- 1346098498
- Provider Name
- ALYSSA HENNESSY MSW
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 400 DOANSBURG RD BREWSTER, NY 10509
- Location Phone
- (845) 279-2995
- Mailing Address
- 400 DOANSBURG RD BREWSTER, NY 10509
- Mailing Phone
- (845) 279-2995
- Is Sole Proprietor?
- No
- Enumeration Date
- 05-13-2024
- Last Update Date
- 01-21-2026
- Code Navigator
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
Specialist
- Taxonomy Code
- 174400000X
- Type
- Other Service Providers
- Taxonomy Description
- An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Secondary Taxonomies
The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.
| No. | Taxonomy Code | Type | Classification / Specialization |
License No. (State) |
|---|---|---|---|---|
| 1 | 104100000X | Behavioral Health & Social Service Providers | Social Worker |
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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 1346098498, 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 72. The final step is to find the difference between that total and the next multiple of ten (80 - 72 = 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.
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.
Step 2: Add all digits plus the NPI constant
Add the transformed values, the unchanged digits, and the constant 24.
Step 3: Find the amount needed to reach the next multiple of 10
The next multiple of ten after 72 is 80. The difference is the calculated check digit.
Other Providers at the Same Location
The following 20 providers are registered at the same or a nearby location.
BREWSTER, NY 10509
BREWSTER, NY 10509
BREWSTER, NY 10509
BREWSTER, NY 10509
BREWSTER, NY 10509
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1346098498, enumerated as an "individual" on May 13, 2024.
The provider is located at 400 DOANSBURG RD BREWSTER, NY 10509 and the phone number is (845) 279-2995.
Specialist with taxonomy code 174400000X.
