RIVIERE MENTAL HEALTH GROUP LLC
NPI 1801745443
Psychiatry & Neurology - Psychiatry in Montclair, NJ

NPI Status: Active since January 27, 2026

Contact Information

28 VALLEY RD
MONTCLAIR, NJ
ZIP 07042
Phone: (973) 981-0441
Fax: (973) 561-3091

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  • Organization
  • Psychiatry & Neurology
  • Psychiatry

About RIVIERE MENTAL HEALTH GROUP LLC

This page provides the complete NPI Profile along with additional information for Riviere Mental Health Group Llc, a provider established in Montclair, New Jersey operating as a Psychiatry & Neurology, focusing in psychiatry . The healthcare provider is registered in the NPI registry with number 1801745443 assigned on January 2026. The practitioner's primary taxonomy code is 2084P0800X. The provider is registered as an organization and their NPI record was last updated January 2026. The organization operates as a Single Specialty Group with one or more individual practitioners, all of who practice with the same area of specialization. The authorized official of this NPI record is Natasha S Lopez Pmhnp (Owner)

NPI
1801745443
Provider Name
RIVIERE MENTAL HEALTH GROUP LLC
Entity Type
Organization
Location Address
28 VALLEY RD MONTCLAIR, NJ 07042
Location Phone
(973) 981-0441
Location Fax
(973) 561-3091
Mailing Address
28 VALLEY RD STE 1 MONTCLAIR, NJ 07042
Mailing Phone
(973) 981-0441
Is Sole Proprietor?
No
Is Organization Subpart?
No
Enumeration Date
01-27-2026
Last Update Date
01-27-2026
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A psychiatrist like Riviere Mental Health Group Llc are primary mental health physicians diagnose and treat mental illnesses through psychotherapy, psychoanalysis, hospitalization and medication. Psychiatrist help patients find solutions through changes in their behavioral patterns, explorations of experiences, group and family therapy.

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

Psychiatry & Neurology Psychiatry

Taxonomy Code
2084P0800X
Type
Allopathic & Osteopathic Physicians
Taxonomy Description
A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Group Taxonomy 193400000X SINGLE SPECIALTY GROUP

This provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.

Authorized Official

The authorized official is the designated individual with the legal authority to make changes to the provider’s official NPI record. For organizations, the authorized official must be a general partner, chairman of the board, CEO, CFO or a direct owner holding at least a 5 percent stake in the medical organization.

Authorized Official Name

NATASHA S LOPEZ PMHNP

Authorized Official Title
OWNER
Authorized Official Phone
(973) 981-0441

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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 1801745443, we treat the final digit (3) 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 57. The final step is to find the difference between that total and the next multiple of ten (60 - 57 = 3).

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
8
Unchanged
Pos 3
0
Doubled → 0
Pos 4
1
Unchanged
Pos 5
7
Doubled → 14 → 1 + 4
Pos 6
4
Unchanged
Pos 7
5
Doubled → 10 → 1 + 0
Pos 8
4
Unchanged
Pos 9
4
Doubled → 8
Check
3
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 0 → 0 7 → 14 → 5 5 → 10 → 1 4 → 8

Step 2: Add all digits plus the NPI constant

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

2 + 8 + 0 + 1 + 1 + 4 + 4 + 1 + 0 + 4 + 8 + 24 = 57

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

The next multiple of ten after 57 is 60. The difference is the calculated check digit.

60 - 57 = 3
This NPI is valid
The calculated check digit is 3, which matches the last digit of 1801745443.

Other Providers at the Same Location


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

Home Health
28 VALLEY RD
MONTCLAIR, NJ 07042
Registered Nurse (Home Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
In Home Supportive Care
28 VALLEY RD
MONTCLAIR, NJ 07042
In Home Supportive Care
28 VALLEY RD, SUITE 1 PMB #244
MONTCLAIR, NJ 07042
Psychologist (Clinical)
28 VALLEY RD
MONTCLAIR, NJ 07042
Nurse Practitioner (Psychiatric/Mental Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
Secured Medical Transport (VAN)
28 VALLEY RD
MONTCLAIR, NJ 07042
Clinic/Center
28 VALLEY RD
MONTCLAIR, NJ 07042
Nurse Practitioner (Adult Health)
28 VALLEY RD, SUITE 1, OFFICE #148
MONTCLAIR, NJ 07042
Nurse Practitioner (Psychiatric/Mental Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
Nurse Practitioner (Psychiatric/Mental Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
Counselor (Mental Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
Counselor (Mental Health)
28 VALLEY RD
MONTCLAIR, NJ 07042
Internal Medicine
28 VALLEY RD
MONTCLAIR, NJ 07042

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1801745443, enumerated as an "organization" on January 27, 2026.

The provider is located at 28 VALLEY RD MONTCLAIR, NJ 07042 and the phone number is (973) 981-0441.

Psychiatry & Neurology with taxonomy code 2084P0800X and a focus in Psychiatry.