IT Services and Managed IT in Nassau County, NY
NetSys runs IT for Nassau County organizations as one managed service: the help desk, Microsoft 365, laptops and phones, security, backups and the carriers and software vendors behind them. Engineers work from our Park Slope office, close most tickets remotely and drive out to Mineola, Garden City, Great Neck or Massapequa when a job needs a person in the room.
The short answer
NetSys delivers IT services and managed IT throughout Nassau County, from Valley Stream and Lake Success to Garden City, Hicksville and Glen Cove. The whole county sits inside our on-site coverage: engineers based at our Brooklyn office resolve most issues remotely first and come to your office for network, hardware and move work. Monitoring and emergency response are 24/7, and people staff the help desk from 4 a.m. to 11 p.m. Eastern, seven days a week. Managed IT is priced per user per month after an assessment, agreements run month to month, and nobody signs a long-term contract.
- One office, in Brooklyn, NY; all of Nassau County is inside our on-site coverage, with Valley Stream and Lake Success roughly 35 to 45 minutes away by car and Hicksville about 50
- Engineers come on site for firewalls, switches, Wi-Fi, wiring closets, new workstations and office moves, after remote troubleshooting
- Monitoring and emergency service run 24/7; the help desk is staffed seven days a week from 4 a.m. to 11 p.m. Eastern time
- Month-to-month agreements and 98% client retention
We’re a member here
We hold membership in the local business organization covering Nassau County, NY, so you can check us out in someone else’s directory instead of taking this page’s word for it. Membership is an affiliation, not an endorsement of our work.
- Farmingdale Chamber of Commerce · Farmingdale, NY
What managed IT covers for a Nassau County organization
A managed agreement gives one team ownership of the whole environment. NinjaOne monitors and patches every server and laptop, IT Glue holds the documentation, and the help desk takes calls and email from your staff. We administer Microsoft 365, Entra ID and Intune, run ThreatDown endpoint detection and response alongside Barracuda email filtering, and back up servers and mailboxes with Datto or Veeam, restoring on a schedule to prove the copies work. Vendor management is part of the plan: when the cable circuit drops or a software vendor ships an update that breaks the front desk, we open the ticket, chase it and tell you when it is fixed. License, domain and warranty renewal dates sit in IT Glue so nothing lapses quietly. Separate pages cover IT support, cybersecurity, network security and disaster recovery for the county; this one describes the managed service that ties them together.
Do engineers come on site in Nassau County, and how long is the drive?
Yes. Every town, city and village in the county is inside the roughly 50-mile radius we serve on site from Park Slope. Outside rush hour, Valley Stream and Lake Success are about 35 to 45 minutes by car, Garden City and Mineola about 45, Hicksville and Massapequa about 50, and Glen Cove or Oyster Bay closer to an hour; the Belt Parkway, the Cross Island and the Long Island Expressway stretch every estimate at peak times. So we fix what we can remotely: a locked account, a copier that stopped scanning, a failed update. Visits are for work that needs a person in the room, such as replacing a firewall, tracing an unlabeled patch panel, surveying Wi-Fi before a lease starts or setting up desks on move weekend. The engineer who arrives already has your documentation open, so the visit starts with the work rather than with questions.
The industries that shape Nassau County IT
Nassau's private economy leans on professional practices. Bureau of Labor Statistics county data put the concentration of legal services jobs at about 2.3 times the national rate, more than 11,000 jobs, and accounting, physician and dental offices and insurance agencies all run above the national average. Healthcare anchors the county: Northwell Health, the state's largest private employer, is headquartered in New Hyde Park, and NYU Langone Hospital-Long Island in Mineola, Mount Sinai South Nassau in Oceanside and the Catholic Health hospitals in Roslyn, Rockville Centre and Bethpage each draw practices around them. The systems differ by trade, from the practice's EHR and billing system to tax and practice-management software, a document management system or a portfolio and CRM platform. The job does not: keep them patched, backed up, reachable from home and documented, and deal with the software vendor so your staff does not have to.
Office corridors, circuits and power
Office space here runs along corridors rather than one downtown: Old Country Road and Stewart Avenue in Garden City and Mineola, RXR Plaza in Uniondale, Marcus Avenue in Lake Success, the Jericho Quadrangle and Jericho Turnpike, and the medical buildings along Northern Boulevard in Great Neck and Manhasset. Cushman & Wakefield put Nassau's office vacancy at 11.2% in the third quarter of 2026, with western Nassau the tightest submarket on Long Island at 8.9%. Many offices sit in older buildings, which often means shared risers, a single cable circuit and a network closet nobody has labeled, so we map those first. Carrier options to check at your address include Optimum Business, Verizon Fios and Lightpath fiber. Power varies as well: PSEG Long Island serves most of the county, while Freeport and Rockville Centre run their own municipal electric systems.
Storms, outages and the county's cyber record
Sandy's surge in October 2012 flooded the South Shore, put about nine feet of saltwater into the Bay Park sewage plant in East Rockaway and shut Long Beach Medical Center, whose basement held its electrical and mechanical systems. Tropical Storm Isaias left about 135,000 Nassau outages the morning after it passed in August 2020, by the County Executive's count, and the remnants of Ida brought another federal disaster declaration in September 2021. Attackers have done similar damage. Rockville Centre's school district paid an $88,000 ransom in 2019, while Mineola's district recovered from offline backups. Manhasset's district refused a demand in 2021 and saw stolen files posted online, and in January 2024 an intrusion at a Garden City plastic surgery group exposed records of 161,707 patients. Our designs plan for both kinds of event: UPS runtime, cellular failover, mail and files in Microsoft 365, and backups held off site.
How the first 30 days of managed IT work
Week one is discovery. An engineer visits to inventory the firewall, switches, Wi-Fi, servers and printers, while we collect Microsoft 365 admin access, domain registrar logins and vendor contacts and record them in IT Glue. Week two installs the NinjaOne agent and ThreatDown on every device, turns on multifactor authentication and starts backups, followed by a first test restore. In weeks three and four we fix what discovery found, typically stale accounts, a firewall still on its default admin password or a server with no off-site copy, and we take over the vendor relationships from the outgoing provider. Staff notice three changes: one number and one email address for help, a sign-in prompt on their phones, and a short KnowBe4 phishing course. At the end of the month you receive a written baseline of the environment and a 90-day plan for what comes next, with costs attached.
New York rules that shape a Nassau IT program
Every business that keeps New York residents' private information falls under the SHIELD Act. General Business Law section 899-bb expects reasonable safeguards, and its examples include naming someone to coordinate the program, training staff, binding vendors by contract to protect data and regularly testing key controls; a business already in compliance with HIPAA, the Gramm-Leach-Bliley rules or 23 NYCRR Part 500 counts as compliant. Section 899-aa gives 30 days from discovery to notify affected residents, and the Attorney General, Department of State and State Police must be told as well. Insurance agencies and other DFS licensees also answer to Part 500, which since November 1, 2025 requires multifactor authentication for anyone signing in, with narrower duties for small firms. Medical and dental practices add HIPAA, tax preparers the FTC Safeguards Rule and advisers SEC Regulation S-P. This is general information, not legal advice.
Towns and neighborhoods we cover around Nassau County, NY
- Garden City
- Mineola
- Uniondale
- Hempstead
- Lake Success
- Great Neck
- Manhasset
- Port Washington
- Roslyn
- Westbury
- Jericho
- Syosset
- Hicksville
- Bethpage
- Massapequa
- Rockville Centre
- Valley Stream
- Oceanside
- Long Beach
- Glen Cove
Examples of our client work
- Law firms
Elder law firm
SharePoint document organization for 28 employees, secure client file sharing, email encryption, and employee access controls.
- Accounting firms
Corporate accounting firm
Migration of 2 TB of business data to Azure, secure remote access for 42 employees, and backup and recovery configuration.
- Healthcare
Three-location urgent care group
IT support for 36 workstations, patient data backups, endpoint protection, and secure networking across all three locations.
Client names are withheld. These examples were chosen for the work involved, not for where the client is, so none is presented as a Nassau County, NY client.
Services in Nassau County, NY
Industry depth: IT for Healthcare · IT for Law Firms · IT for Accounting Firms · IT for Dental Practices · Wealth Management · IT for Medical Practices · IT for Urgent Care
Also from NetSys: small business IT support · 24/7 IT support
Next steps: IT support and help desk for Nassau County offices · Cybersecurity services in Nassau County · Network security for Nassau County offices · Backup and disaster recovery in Nassau County · IT support for Nassau County law firms · IT support for Nassau County accounting firms · Healthcare IT support in Nassau County · IT support for Nassau County medical offices · Dental office IT support in Nassau County · Urgent care IT support in Nassau County · IT support for Nassau County wealth managers · Managed IT across Nassau and Suffolk
Nearby: Long Island, NY · Garden City, NY · Mineola, NY · Great Neck, NY · Lake Success, NY · Jericho, NY · Uniondale, NY · Queens, NY · Suffolk County, NY
More in Long Island: Farmingdale, NY · Melville, NY · Hauppauge, NY · Ronkonkoma, NY · Bohemia, NY
Also for Nassau County, NY: Logistics IT Support in Hicksville, NY
NetSys vs. CMIT Solutions
CMIT Solutions ranks on the first page for IT services in Nassau County, NY. Their column below is drawn from their own published pages and links to each source. Ours states what we publish. Put the same questions to both.
| The NetSys Group | CMIT Solutions | |
|---|---|---|
| Agreement | Month to month. Leave any time, no early-exit penalty. | The CMIT Solutions of Las Vegas office publishes an FAQ page stating 12-month standard agreements with month-to-month renewal, no multi-year lock-in, and 30 days' written notice to terminate. (cmitsolutions.com) |
| What the monthly fee covers | One agreement: AI services, cybersecurity, managed IT with help desk, PAM, PIM and disaster recovery planning. | The corporate IT services index page lists fourteen service lines: Managed AI, Managed Detection and Response (MDR), Cybersecurity, IT Support, Managed Services, Productivity Applications, Cloud Services, IT Network Support Services, Compliance, CMMC Compliance, Data Backup and Recovery Services, Unified Communications, IT Guidance, and IT Procurement. (cmitsolutions.com) |
| Privileged access and credentials | PAM and PIM in the base agreement, each with a published service page describing the work. | Privileged access management is described on the domain within an educational blog article's table of cybersecurity solution categories, in the Access Control and Authentication section. (cmitsolutions.com) |
| AI and automation | In-house practice led by Jamie Baum: readiness assessments, Copilot rollouts, custom agents and workflow automation. | The corporate Managed AI Solutions page describes an AI practice covering shadow-AI discovery, selection of business-grade AI tools, acceptable use policy development, access controls for sensitive data, logging of AI tool usage for compliance visibility, and integration with applications including Microsoft 365, Google Workspace and Slack; the page attributes delivery to a nationwide network of 900+ IT and cybersecurity professionals. (cmitsolutions.com) |
| Disaster recovery | A written plan plus restores that are performed and timed. More than 30 ransomware incidents handled in three years, every one recovered. | The corporate data backup page distinguishes data backup from disaster recovery services, describes backup frequency as based on Recovery Point Objective (RPO), includes a monthly backup testing service description, and describes cloud failover environments that allow employees to work while primary systems are restored. (cmitsolutions.com) |
| Who answers | A NetSys engineer, plus a named account manager who gives you a real cell number. | The corporate IT support page states support is available 24/7 through online chat, phone, email and text, that most issues are resolved remotely with on-site support when required, and that the customer selects the response time period. (cmitsolutions.com) |
| Response commitments | Written into the agreement rather than implied on the website. | The corporate service-packages page describes three support tiers: time-and-materials hourly fees for remote and on-site support; unlimited remote support with time-and-materials on-site; and unlimited 24/7/365 live help desk with priority on-site support. (cmitsolutions.com) |
| Proof before you commit | The free assessment is a remote external penetration test, limited to the information available to NetSys and the external scope we agree with you. | The Nassau office Manhasset page publishes an AI Readiness Self-Assessment described as free and taking five minutes, scored across Productivity, Security, Tools & Integration, Automation, and Team Culture, followed by a free 30-minute AI strategy call. (cmitsolutions.com) |
| Where they are | One office, in Brooklyn. On-site across New York City, Nassau and western Suffolk, Westchester, Rockland, North and Central Jersey, the northern Jersey Shore and lower Fairfield County, CT, with remote managed IT nationwide. | The Nassau, NY office page describes the local office as part of a North American network of more than 250 locations, lists a local address at 640 Broadway, Massapequa, NY 11758, and lists service areas including Albertson, Great Neck, Jericho, Manhasset, Port Washington, Syosset, and Woodbury. (cmitsolutions.com) |
CMIT Solutions appears here because it ranked on the first page of search results for IT services in Nassau County, NY when we checked in September 2026. Everything in their column is drawn from pages published on https://cmitsolutions.com/ and links to the source. Where we could not find something published we say so, which means we did not find it, not that it does not exist. We make no claim about the quality of their service. All trademarks belong to their owners and no affiliation or endorsement is implied.
Also ranking for IT services in Nassau County, NY: WheelHouse IT · smartIT · Computero.
Comparing us with other Nassau County, NY providers
We researched every firm below from what it publishes about itself, and each page says plainly when they are the better fit.
Nassau County, NY FAQs
Who provides IT services and managed IT in Nassau County?
NetSys does. We are an IT company founded in 1998 with one office, in Park Slope, Brooklyn, and every part of Nassau County is inside the area our engineers cover in person. We run monitoring and patching, the help desk, Microsoft 365, security, backups and networks, and we manage the vendors behind them. Our engineers hold degrees in electrical engineering, electronics engineering and computer science and are certified in Cisco and Microsoft. Each client gets a dedicated account manager with a real cell number, and agreements run month to month.
Do you provide on-site IT support in Nassau County?
Yes. Engineers drive from Brooklyn to offices anywhere in the county, from Valley Stream and Long Beach to Port Washington, Jericho and Massapequa, when the work needs hands: network equipment, cabling, new workstations, a conference room or an office move. Most tickets are closed remotely first because that is faster for your staff. Ransomware, a down server, a dead internet circuit or email that will not send goes straight to your dedicated engineer, who decides whether a visit is the quickest fix.
How much do managed IT services cost in Nassau County?
Managed IT is priced per user per month after we assess your environment, and there is no rate card, because scope sets the number. The fee moves with the number of users and devices, servers still running in the office, how many locations you have, compliance evidence such as a HIPAA risk analysis or Part 500 certification support, and how often your offices need a visit. One-time projects, like a Microsoft 365 migration or a move from Mineola to Garden City, are quoted separately after scoping. There is no long-term contract.
What is included in a managed IT plan for a Nassau County business?
The plan includes the help desk, continuous monitoring and patching, Microsoft 365 and Entra ID administration, Intune device management, ThreatDown endpoint detection and response, Barracuda email filtering, KnowBe4 phishing training, Keeper password management and Datto or Veeam backups with scheduled test restores. It also covers the firewall, switches and Wi-Fi at each office, documentation in IT Glue and vendor management for the carrier, the copier company and your line-of-business software. A quarterly review keeps hardware refresh dates and the next year's budget on paper.
Is NetSys an IT company based in Nassau County?
No. Our only office is at 1 Prospect Park SW, Suite 6E, Brooklyn, NY 11215, and our main line is 845-203-3914. Nassau County is a service area, not a branch: engineers travel out from Park Slope for on-site work, and everything else runs remotely through NinjaOne, Microsoft 365 and our help desk. A visit is booked like any appointment, with the engineer bringing the parts and documentation your office needs.
What response times do Nassau County managed clients get?
The written commitments on our managed IT and help desk pages apply here. Critical issues get a phone response within ten minutes and a remote response within thirty. Standard issues get a phone response within thirty minutes and a remote response within an hour. Severe problems, such as ransomware, systems down, no internet or email down, skip the queue and reach your dedicated engineer. If the fix needs hands, the visit is arranged once remote triage shows what to bring.
Can you replace our current IT provider without disrupting the office?
Yes, and the order matters. We first collect administrator access to Microsoft 365, the firewall, the domain registrar and any servers, confirm the backups restore, and gather contracts for the circuit, phones and software. The outgoing provider's tools come off only after ours are installed and reporting, so there is no gap in monitoring. Staff get a short note with the new help desk number before the switch. For an office of 10 to 50 people the handover is usually planned over two to four weeks, with the cutover itself scheduled outside working hours.
Do you work with medical, legal and accounting practices in Nassau County?
Yes. Those are the trades that dominate the county, and each has its own Nassau page: healthcare groups, physician offices, urgent care, dental, law firms, accounting firms and wealth managers. The safeguards change with the rules, HIPAA for practices, New York's Rule 1.6(c) for lawyers and the FTC Safeguards Rule for tax preparers, but the method stays the same. We manage the platform each application runs on and work with its vendor on application faults, rather than posing as that vendor's support desk.
What happens if ransomware hits a Nassau County office we manage?
The affected devices are isolated, your dedicated engineer takes over and we restore from backups that ransomware cannot alter. NetSys has handled more than 30 ransomware incidents in the past three years and recovered every one fully, and clients who already had a disaster recovery plan were working again within 24 hours. That is why the plan includes immutable backup copies, an off-site replica and a written recovery order for your systems, tested before anything goes wrong.
Put every office, account and vendor under one accountable team.
Tell us how many people and locations you have and what still runs in the back room. An engineer will walk you through what changes in the first 30 days.