JOSEPH MANUEL GANDARILLAS JR.
NPI 1497555809
Counselor - Mental Health in Montclair, NJ

NPI Status: Active since March 14, 2025

Contact Information

325 CLAREMONT AVE STE 5
MONTCLAIR, NJ
ZIP 07042
Phone: (973) 768-6953

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  • Individual
  • Male
  • Counselor
  • Mental Health

About JOSEPH GANDARILLAS

This page provides the complete NPI Profile along with additional information for Joseph Gandarillas, a provider established in Montclair, New Jersey with a medical specialization in Counselor, focusing in mental health . The healthcare provider is registered in the NPI registry with number 1497555809 assigned on March 2025. The practitioner's primary taxonomy code is 101YM0800X with license number 37PC01123700 (NJ). The provider is registered as an individual and his NPI record was last updated one year ago.

NPI
1497555809
Provider Name
JOSEPH MANUEL GANDARILLAS JR.
Gender
Male
Entity Type
Individual
Location Address
325 CLAREMONT AVE STE 5 MONTCLAIR, NJ 07042
Location Phone
(973) 768-6953
Mailing Address
207 WALNUT ST MONTCLAIR, NJ 07042
Mailing Phone
(973) 768-6953
Is Sole Proprietor?
No
Enumeration Date
03-14-2025
Last Update Date
03-14-2025
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A mental health counselor like Joseph Gandarillas 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

Secondary Locations

  • 245C Nassau St
    Princeton, NJ 08540
    (609) 375-8727

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.
37PC01123700
License State
NJ

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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 1497555809, 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
4
Unchanged
Pos 3
9
Doubled → 18 → 1 + 8
Pos 4
7
Unchanged
Pos 5
5
Doubled → 10 → 1 + 0
Pos 6
5
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
8
Unchanged
Pos 9
0
Doubled → 0
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 5 → 10 → 1 5 → 10 → 1 0 → 0

Step 2: Add all digits plus the NPI constant

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

2 + 4 + 1 + 8 + 7 + 1 + 0 + 5 + 1 + 0 + 8 + 0 + 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 1497555809.

Other Providers at the Same Location


The following 4 providers are registered at the same or a nearby location.

Social Worker (Clinical)
325 CLAREMONT AVE STE 5
MONTCLAIR, NJ 07042
Psychologist (Clinical)
325 CLAREMONT AVE STE 5
MONTCLAIR, NJ 07042
Clinic/Center (Mental Health (Including Community Mental Health Center))
325 CLAREMONT AVE STE 5
MONTCLAIR, NJ 07042
Counselor (Mental Health)
325 CLAREMONT AVE STE 5
MONTCLAIR, NJ 07042

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1497555809, enumerated as an "individual" on March 14, 2025.

The provider is located at 325 CLAREMONT AVE STE 5 MONTCLAIR, NJ 07042 and the phone number is (973) 768-6953.

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