REBECCA LYNN GEIGER WALLEN LMSW
NPI 1730999699
Social Worker in New Haven, CT

NPI Status: Active since January 11, 2025

Contact Information

55 LOCK ST
NEW HAVEN, CT
ZIP 06511
Phone: (203) 432-2000

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  • Individual
  • Female
  • Social Worker

About REBECCA WALLEN

This page provides the complete NPI Profile along with additional information for Rebecca Wallen, a provider established in New Haven, Connecticut with a medical specialization in Social Worker. The healthcare provider is registered in the NPI registry with number 1730999699 assigned on January 2025. The practitioner's primary taxonomy code is 104100000X with license number 10700 (CT). The provider is registered as an individual and her NPI record was last updated one year ago.

NPI
1730999699
Provider Name
REBECCA LYNN GEIGER WALLEN LMSW
Gender
Female
Entity Type
Individual
Location Address
55 LOCK ST NEW HAVEN, CT 06511
Location Phone
(203) 432-2000
Mailing Address
55 LOCK ST NEW HAVEN, CT 06511
Mailing Phone
(203) 432-2000
Is Sole Proprietor?
Yes
Enumeration Date
01-11-2025
Last Update Date
01-11-2025
Code Navigator

A social worker like Rebecca Wallen 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.

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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

Social Worker

Taxonomy Code
104100000X
Type
Behavioral Health & Social Service Providers
License No.
10700
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.

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)
1104100000XBehavioral Health & Social Service Providers

Social Worker

SW136985 (PA)

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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 1730999699, 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 81. The final step is to find the difference between that total and the next multiple of ten (90 - 81 = 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
7
Unchanged
Pos 3
3
Doubled → 6
Pos 4
0
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
9
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
6
Unchanged
Pos 9
9
Doubled → 18 → 1 + 8
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 3 → 6 9 → 18 → 9 9 → 18 → 9 9 → 18 → 9

Step 2: Add all digits plus the NPI constant

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

2 + 7 + 6 + 0 + 1 + 8 + 9 + 1 + 8 + 6 + 1 + 8 + 24 = 81

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

The next multiple of ten after 81 is 90. The difference is the calculated check digit.

90 - 81 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1730999699.

Other Providers at the Same Location


The following 20 providers are registered at the same or a nearby location.

Internal Medicine (Nephrology)
55 LOCK ST, YALE HEALTH
NEW HAVEN, CT 06511
Internal Medicine
55 LOCK ST
NEW HAVEN, CT 06511
Nurse Practitioner (Adult Health)
55 LOCK ST
NEW HAVEN, CT 06511
Psychiatry & Neurology (Neurology)
55 LOCK ST
NEW HAVEN, CT 06511
Nurse Practitioner (Pediatrics)
55 LOCK ST
NEW HAVEN, CT 06511
Nurse Practitioner (Family)
55 LOCK ST, OBSTETRICS AND GYNECOLOGY, 2ND FLOOR
NEW HAVEN, CT 06511
Pharmacist (Pharmacist Clinician (PhC)/ Clinical Pharmacy Specialist)
55 LOCK ST
NEW HAVEN, CT 06511
Clinic/Center
55 LOCK ST
NEW HAVEN, CT 06511
Internal Medicine
55 LOCK ST, YALE HEALTH
NEW HAVEN, CT 06511
Pediatrics
55 LOCK ST
NEW HAVEN, CT 06511
Pediatrics
55 LOCK ST
NEW HAVEN, CT 06511
Physician Assistant (Medical)
55 LOCK ST
NEW HAVEN, CT 06511
Pharmacist
55 LOCK ST
NEW HAVEN, CT 06511
Registered Nurse
55 LOCK ST
NEW HAVEN, CT 06511
Registered Nurse
55 LOCK ST
NEW HAVEN, CT 06511
Registered Nurse
55 LOCK ST
NEW HAVEN, CT 06511
Pharmacist
55 LOCK ST
NEW HAVEN, CT 06511
Nurse Practitioner (Family)
55 LOCK ST
NEW HAVEN, CT 06511
Physician Assistant
55 LOCK ST
NEW HAVEN, CT 06511
Internal Medicine
55 LOCK ST
NEW HAVEN, CT 06511

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1730999699, enumerated as an "individual" on January 11, 2025.

The provider is located at 55 LOCK ST NEW HAVEN, CT 06511 and the phone number is (203) 432-2000.

Social Worker with taxonomy code 104100000X.