ELIZABETH CALABRESI
NPI 1801520994
Counselor in Cambridge, MA
NPI Status: Active since July 13, 2022
Contact Information
44 1/2 WARREN ST
CAMBRIDGE, MA
ZIP 02141
Phone: (401) 743-4690
- Individual
- Female
- Counselor
About ELIZABETH CALABRESI
This page provides the complete NPI Profile along with additional information for Elizabeth Calabresi, a provider established in Cambridge, Massachusetts with a medical specialization in Counselor. The healthcare provider is registered in the NPI registry with number 1801520994 assigned on July 2022. The practitioner's primary taxonomy code is 101Y00000X with license number 231066 (MA). The provider is registered as an individual and her NPI record was last updated April 2026.
- NPI
- 1801520994
- Provider Name
- ELIZABETH CALABRESI
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 44 1/2 WARREN ST CAMBRIDGE, MA 02141
- Location Phone
- (401) 743-4690
- Mailing Address
- 44 1/2 WARREN ST CAMBRIDGE, MA 02141
- Mailing Phone
- (401) 743-4690
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 07-13-2022
- Last Update Date
- 04-27-2026
- 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
Counselor
- Taxonomy Code
- 101Y00000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 231066
- License State
- MA
- 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.
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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 1801520994, we treat the final digit (4) 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 56. The final step is to find the difference between that total and the next multiple of ten (60 - 56 = 4).
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 56 is 60. The difference is the calculated check digit.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1801520994, enumerated as an "individual" on July 13, 2022.
The provider is located at 44 1/2 WARREN ST CAMBRIDGE, MA 02141 and the phone number is (401) 743-4690.
Counselor with taxonomy code 101Y00000X.
