ISABEL MARCHAND LMSW
NPI 1639023435
Social Worker in Westport, CT
NPI Status: Active since February 26, 2026
Contact Information
1698 POST RD E STE 1A
WESTPORT, CT
ZIP 06880
Phone: (203) 828-0868
- Individual
- Female
- Social Worker
About ISABEL MARCHAND
This page provides the complete NPI Profile along with additional information for Isabel Marchand, a provider established in Westport, Connecticut with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1639023435 assigned on February 2026. The practitioner's primary taxonomy code is 104100000X with license number 11692 (CT). The provider is registered as an individual and her NPI record was last updated February 2026.
- NPI
- 1639023435
- Provider Name
- ISABEL MARCHAND LMSW
- Other Name
- IZZY MARCHAND LMSW
- Other Name Type
- Other Name (5)
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 1698 POST RD E STE 1A WESTPORT, CT 06880
- Location Phone
- (203) 828-0868
- Mailing Address
- 171 HUBBARD PL HAMDEN, CT 06517
- Is Sole Proprietor?
- No
- Enumeration Date
- 02-26-2026
- Last Update Date
- 02-26-2026
- Code Navigator
A social worker like Isabel Marchand helps patients solve and cope with problems in their everyday lives, diagnoses and treats mental, behavioral, and emotional problems. Social workers help in wide range of situations, such as adopting a child, illness, divorce, or unemployment.
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
Social Worker
- Taxonomy Code
- 104100000X
- Type
- Behavioral Health & Social Service Providers
- License No.
- 11692
- License State
- CT
- Taxonomy Description
- A social worker is a person who is qualified by a Social Work degree, and licensed, certified or registered by the state as a social worker to practice within the scope of that license. A social worker provides assistance and counseling to clients and their families who are dealing with social, emotional and environmental problems. Social work services may be rendered to individuals, families, groups, and the public.
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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 1639023435, we treat the final digit (5) 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 65. The final step is to find the difference between that total and the next multiple of ten (70 - 65 = 5).
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 65 is 70. The difference is the calculated check digit.
Other Providers at the Same Location
The following 1 provider is registered at the same or a nearby location.
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1639023435, enumerated as an "individual" on February 26, 2026.
The provider is located at 1698 POST RD E STE 1A WESTPORT, CT 06880 and the phone number is (203) 828-0868.
Social Worker with taxonomy code 104100000X.
