MR. DAVID WALENCZYK LMFT
NPI 1588935357
Counselor - Mental Health in Norwalk, CT

NPI Status: Active since January 25, 2012

Contact Information

20 N MAIN ST
3RD FLOOR
NORWALK, CT
ZIP 06854
Phone: (203) 838-6508
Fax: (203) 852-7021

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  • Individual
  • Male
  • Counselor
  • Mental Health

About DAVID WALENCZYK

This page provides the complete NPI Profile along with additional information for David Walenczyk, a provider established in Norwalk, Connecticut with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1588935357 assigned on January 2012. The practitioner's primary taxonomy code is 101YM0800X with license number 000620 (CT). The provider is registered as an individual and his NPI record was last updated 12 years ago.

NPI
1588935357
Provider Name
MR. DAVID WALENCZYK LMFT
Gender
Male
Entity Type
Individual
Location Address
20 N MAIN ST 3RD FLOOR NORWALK, CT 06854
Location Phone
(203) 838-6508
Location Fax
(203) 852-7021
Mailing Address
20 N MAIN ST 3RD FLOOR NORWALK, CT 06854
Mailing Phone
(203) 838-6508
Mailing Fax
(203) 852-7021
Is Sole Proprietor?
No
Enumeration Date
01-25-2012
Last Update Date
12-22-2014
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A mental health counselor like David Walenczyk provides treatment to individuals, families, couples, and groups for mental and emotional health issues and relationship problems. Mental health counselors treat clients with a variety of conditions, including anxiety, depression, grief, low self-esteem, stress, and suicidal impulses.

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 Mental Health

Taxonomy Code
101YM0800X
Type
Behavioral Health & Social Service Providers
License No.
000620
License State
CT

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)
1101YA0400XBehavioral Health & Social Service Providers

Counselor
Addiction (Substance Use Disorder)

000620 (CT)

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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 1588935357, we treat the final digit (7) 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 63. The final step is to find the difference between that total and the next multiple of ten (70 - 63 = 7).

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
5
Unchanged
Pos 3
8
Doubled → 16 → 1 + 6
Pos 4
8
Unchanged
Pos 5
9
Doubled → 18 → 1 + 8
Pos 6
3
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
3
Unchanged
Pos 9
5
Doubled → 10 → 1 + 0
Check
7
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 8 → 16 → 7 9 → 18 → 9 5 → 10 → 1 5 → 10 → 1

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 6 + 8 + 1 + 8 + 3 + 1 + 0 + 3 + 1 + 0 + 24 = 63

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

The next multiple of ten after 63 is 70. The difference is the calculated check digit.

70 - 63 = 7
This NPI is valid
The calculated check digit is 7, which matches the last digit of 1588935357.

Other Providers at the Same Location


The following 8 providers are registered at the same or a nearby location.

Dentist (Oral and Maxillofacial Surgery)
20 N MAIN ST
SOUTH NORWALK, CT 06854
Dentist (General Practice)
20 N MAIN ST
NORWALK, CT 06854
Social Worker (Clinical)
20 N MAIN ST
NORWALK, CT 06854
Counselor (Addiction (Substance Use Disorder))
20 N MAIN ST, 3RD FLOOR
NORWALK, CT 06854
Clinic/Center (Methadone)
20 N MAIN ST
NORWALK, CT 06854
Clinic/Center (Primary Care)
20 N MAIN ST
NORWALK, CT 06854
Clinic/Center (Adult Mental Health)
20 N MAIN ST
NORWALK, CT 06854
Clinic/Center (Rehabilitation, Substance Use Disorder)
20 N MAIN ST
NORWALK, CT 06854

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1588935357, enumerated as an "individual" on January 25, 2012.

The provider is located at 20 N MAIN ST 3RD FLOOR NORWALK, CT 06854 and the phone number is (203) 838-6508.

Counselor with taxonomy code 101YM0800X and a focus in Mental Health.