Insights

Strong Industry Presence Mountainside operates as a leading provider of chemical dependency treatment with multiple locations across Connecticut, New York, and New Jersey, along with virtual services in Massachusetts, indicating a broad regional footprint and diversified service delivery channels.

Recognition & Partnerships The organization has received official recognition as a Recovery-Friendly Workplace from Connecticut state authorities and actively partners with hospitals and academic institutions such as Southampton Hospital and Stony Brook University, demonstrating potential for collaboration on corporate wellness programs and training initiatives.

Financial Stability With recent revenue estimates between $50 million and $100 million, Mountainside shows solid financial health, making it an attractive client for premium mental health and addiction treatment solutions, as well as possible expansion funding inquiries.

Commitment to Innovation Mountainside's use of digital tools and engagement with community organizations for scholarships and awareness efforts suggest openness to innovative service models, technology-based engagement, and telehealth solutions—opportunities for technology providers.

Growing Industry Demand Given the increasing focus on mental health and substance use treatment, particularly in a post-pandemic context, Mountainside’s active partnerships, recognition, and regional expansion make it a promising prospect for organizations offering new treatment modalities, adjunct services, or funding programs.

Mountainside Tech Stack

Mountainside uses 8 technology products and services including AppNexus, Statamic, jQuery, and more. Explore Mountainside's tech stack below.

  • AppNexus
    Advertising
  • Statamic
    Content Management System
  • jQuery
    Javascript Libraries
  • LiveAgent
    Live Chat
  • Envoy
    Load Balancers
  • Cisco Meraki
    Network Hardware
  • iOS
    Programming Languages
  • Bootstrap
    UI Frameworks

Mountainside's Email Address Formats

Mountainside uses at least 1 format(s):
Mountainside Email FormatsExamplePercentage
First.Last@mountainside.comJohn.Doe@mountainside.com
81%
FLast@mountainside.comJDoe@mountainside.com
12%
Last@mountainside.comDoe@mountainside.com
5%
First.Middle@mountainside.comJohn.Michael@mountainside.com
2%

Frequently Asked Questions

Where is Mountainside's headquarters located?

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Mountainside's main headquarters is located at 187 South Canaan Rd, Canaan, Connecticut 06018, US. The company has employees across 3 continents, including North AmericaAfricaAsia.

What is Mountainside's phone number?

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You can contact Mountainside's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Mountainside's official website and social media links?

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Mountainside's official website is mountainside.com and has social profiles on LinkedIn.

What is Mountainside's SIC code NAICS code?

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Mountainside's SIC code is 7011 - Hotels and Motels NAICS code is 62133 - Offices of Mental Health Practitioners (except Physicians).

How many employees does Mountainside have currently?

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As of October 2025, Mountainside has approximately 280 employees across 3 continents, including North AmericaAfricaAsia. Key team members include Chief Executive Officer: A. L. R. B.Chief Executive Officer: B. B.Chief Operating Officer: C. M.. Explore Mountainside's employee directory with LeadIQ.

What industry does Mountainside belong to?

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Mountainside operates in the Mental Health Care industry.

What technology does Mountainside use?

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Mountainside's tech stack includes AppNexusStatamicjQueryLiveAgentEnvoyCisco MerakiiOSBootstrap.

What is Mountainside's email format?

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Mountainside's email format typically follows the pattern of First.Last@mountainside.com. Find more Mountainside email formats with LeadIQ.

When was Mountainside founded?

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Mountainside was founded in 1998.
Mountainside

Mountainside

Mental Health CareUnited States201-500 Employees

At Mountainside Treatment Center, a nationally acclaimed drug addiction treatment and alcohol rehabilitation center, we believe that you can make a difference no matter the position you hold. Each employee plays an important role in caring for clients, giving them a unique and positive experience during their stay. 

Founded in 1998, Mountainside is a leading provider of chemical dependency treatment services. 

We have locations in Connecticut (Canaan and Wilton), New York (Manhattan, Chappaqua and Huntington) and New Jersey (Ramsey). We also serve Massachusetts virtually.

More about our company can be found at http://mtsi.de/treatment. You may also call 888-510-8852 (toll-free).

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CONNECT WITH MOUNTAINSIDE:
 
Facebook: http://www.facebook.com/mountainsidetreatment
Instagram: http://www.instagram.com/mountainsidect
Twitter: http://www.twitter.com/mountainside

Section iconCompany Overview

Headquarters
187 South Canaan Rd, Canaan, Connecticut 06018, US
Phone number
SIC Code
7011 - Hotels and Motels
NAICS Code
62133 - Offices of Mental Health Practitioners (except Physicians)
Founded
1998
Employees
201-500

Section iconFunding & Financials

  • $25M$50M

    Mountainside's revenue is estimated to be in the range of $25M$50M

Section iconFunding & Financials

  • $25M$50M

    Mountainside's revenue is estimated to be in the range of $25M$50M

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