MATTHEW A BELLARD CAC
NPI 1598601619
Counselor - Addiction (Substance Use Disorder) in Bridgeport, CT

NPI Status: Active since April 29, 2026

Contact Information

399 MILL HILL AVE
BRIDGEPORT, CT
ZIP 06610
Phone: (203) 384-9301

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  • Individual
  • Male
  • Counselor
  • Addiction (Substance Use Disorder)

About MATTHEW BELLARD

This page provides the complete NPI Profile along with additional information for Matthew Bellard, a provider established in Bridgeport, Connecticut with a medical specialization in Counselor, focusing in addiction (substance use disorder) . The healthcare provider is registered in the NPI registry with number 1598601619 assigned on April 2026. The practitioner's primary taxonomy code is 101YA0400X. The provider is registered as an individual and his NPI record was last updated April 2026.

NPI
1598601619
Provider Name
MATTHEW A BELLARD CAC
Gender
Male
Entity Type
Individual
Location Address
399 MILL HILL AVE BRIDGEPORT, CT 06610
Location Phone
(203) 384-9301
Mailing Address
399 MILL HILL AVE BRIDGEPORT, CT 06610
Mailing Phone
(203) 384-9301
Is Sole Proprietor?
Yes
Enumeration Date
04-29-2026
Last Update Date
04-29-2026
Code Navigator

A Substance Abuse or Addiction Counselor like Matthew Bellard advices patients who experience alcoholism, drug addiction, eating disorders, mental health issues, or other mental or behavioral problems. Substance Abuse counselors provide treatment and support to help clients recover from addiction or modify problem behaviors. Many counselors incorporate the principles of 12-step programs, such as Alcoholics Anonymous (AA). They educate clients how to cope with stress and life’s issues in ways that help them recover. Counselors also help patients improve their personal relationships and find ways to discuss their addiction or other problems with family and friends.

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 Addiction (Substance Use Disorder)

Taxonomy Code
101YA0400X
Type
Behavioral Health & Social Service Providers
License State
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 1598601619, 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 61. The final step is to find the difference between that total and the next multiple of ten (70 - 61 = 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
5
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
8
Unchanged
Pos 5
6
Doubled → 12 → 1 + 2
Pos 6
0
Unchanged
Pos 7
1
Doubled → 2
Pos 8
6
Unchanged
Pos 9
1
Doubled → 2
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 9 → 18 → 9 6 → 12 → 3 1 → 2 1 → 2

Step 2: Add all digits plus the NPI constant

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

2 + 5 + 1 + 8 + 8 + 1 + 2 + 0 + 2 + 6 + 2 + 24 = 61

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

The next multiple of ten after 61 is 70. The difference is the calculated check digit.

70 - 61 = 9
This NPI is valid
The calculated check digit is 9, which matches the last digit of 1598601619.

Other Providers at the Same Location


The following 14 providers are registered at the same or a nearby location.

Clinic/Center (Adult Mental Health)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Psychiatry & Neurology (Psychiatry)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Clinical Nurse Specialist (Psychiatric/Mental Health)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Counselor (Professional)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Counselor (Addiction (Substance Use Disorder))
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Counselor (Addiction (Substance Use Disorder))
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Nurse Practitioner (Family)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Counselor (Addiction (Substance Use Disorder))
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Nurse Practitioner (Family)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Social Worker
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Social Worker (Clinical)
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Family Medicine
399 MILL HILL AVE
BRIDGEPORT, CT 06610
Licensed Practical Nurse
399 MILL HILL AVE, 399 MILL HILL AVE
BRIDGEPORT, CT 06610
Nurse Practitioner (Psychiatric/Mental Health)
399 MILL HILL AVE
BRIDGEPORT, CT 06610

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1598601619, enumerated as an "individual" on April 29, 2026.

The provider is located at 399 MILL HILL AVE BRIDGEPORT, CT 06610 and the phone number is (203) 384-9301.

Counselor with taxonomy code 101YA0400X and a focus in Addiction (Substance Use Disorder).