Managed IT Services in Nassau County, New York
NetSys supports Nassau County businesses with managed IT, security and on-site engineering within its New York metro service area. Our headquarters is in Brooklyn. For professional practices and multiple offices, define shared-system ownership, vendor escalation and recovery priorities before comparing quotes.
The short answer
NetSys provides managed IT services in Nassau County to medical and dental groups, law and accounting firms and family businesses from Garden City to Great Neck. Nassau sits inside our Long Island on-site region, so engineers come to your offices when work needs hands. Pricing is per user per month, set by sites, devices and compliance scope.
- Nassau County is part of Long Island, a named NetSys on-site coverage area
- Practice depth: a published seven-location medical case study and a law-office case study
- Free external penetration test, run before you hire us
- 100% of NetSys clients hit by ransomware have fully recovered
- Headquarters: Brooklyn, NY
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
A county built on regulated practices
Nassau's commercial character is dominated by professional practices — medical, dental, legal, accounting — clustered around Garden City, Mineola and the hospital corridor. Those businesses carry regulated data on small headcounts, which is the exact profile that gets hurt worst by ransomware and phishing: enough valuable data to be a target, rarely enough internal IT to be a hard one. Our published medical case study, covering seven connected locations, is the closest analogue in our portfolio.
Multi-site is the normal shape here
Practices on Long Island grow by opening another location rather than by filling a bigger one, and the technology usually does not keep up: separate file stores, separate printers, patient or client records emailed between sites because nothing else connects them. Encrypted site-to-site networking so several offices behave as one managed environment is core to our practice, not a special project.
Who this fits in Nassau County
Medical and dental groups, law and accounting firms, and family-owned businesses that have outgrown a break-fix relationship. If you already have an internal IT person, co-managed IT adds 24/7 coverage and security depth behind them. If you are opening a second or third location, the connectivity and security architecture should be designed once rather than improvised three times.
Towns and neighborhoods we cover around Nassau County, NY
- Garden City
- Mineola
- Hicksville
- Great Neck
- Uniondale
- Jericho
- Westbury
- Syosset
- Manhasset
- Lake Success
- Port Washington
- Glen Cove
- Rockville Centre
- Freeport
- Valley Stream
- Massapequa
- Bethpage
- Oceanside
Examples of our client work
- Healthcare
Home healthcare agency
Mobile device protection for 73 phones and tablets, secure email access, and remote removal of company data from lost devices.
- Healthcare
Outpatient mental health practice
Support for 32 clinician workstations, secure telehealth access, patient record backups, and phishing protection.
- Law firms
Elder law firm
SharePoint document organization for 28 employees, secure client file sharing, email encryption, and employee access controls.
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.
A four-location dental group around Garden City and Mineola
The specific engagements behind this profile are under NDA, so it is written as a generalization rather than a named client. Our published, client-approved outcomes are in case studies.
Four offices, roughly 50 staff, and practice-management software holding patient records at each site with no reliable connection between them. Backups are a local appliance at each location that nobody has restored from. Front-desk staff share a login at two of the sites. The group's owner has read enough about ransomware in healthcare to be worried, and has been told by an insurer that the current arrangements will not renew as they are.
- The free external penetration test at the largest site, establishing the realistic path to patient data and producing a prioritized fix list
- Shared logins eliminated — individual accounts with multifactor authentication, so access to patient records is attributable to a person
- The four sites connected over encrypted site-to-site networking, mirroring the architecture in our published seven-location medical case study
- Managed endpoint detection and response across every workstation, with 24/7 monitoring behind it
- Immutable offline backups replacing the local appliances, with a restore actually performed at one site and timed
- Documentation of controls, access and recovery procedure sufficient to answer the insurer's renewal questions truthfully
Patient records live in one managed environment with attributable access, recovery is a tested procedure with a measured recovery time, and the insurance renewal is answerable from documentation. Engineers travel to the sites when hands are needed; everything else runs remotely.
Services in Nassau County, NY
Industry depth: IT for Healthcare · IT for Law Firms · IT for Accounting Firms
Also from NetSys: small business IT support · 24/7 IT support
Next steps: Plan regional support across Nassau and Suffolk · Plan a handover for your Nassau County offices · Compare support inclusions across users and locations · See the security assessment scope · Take the free cybersecurity assessment · Microsoft 365 management & backup · Depth for law firms · IT support in Great Neck · Managed IT in Garden City · Long Island managed IT plans and pricing · IT support for Long Island offices · IT consulting and projects on Long Island · IT support for Long Island medical practices · IT support for Long Island dental practices · IT support for Long Island law firms · IT support for Long Island accounting firms · IT support for Long Island construction companies · AI automation for Garden City professional firms · Queens business IT and cybersecurity · managed network services and business Wi-Fi
Nearby: Long Island, NY · Great Neck, NY · Garden City, NY · Uniondale, NY · Jericho, NY · Suffolk County, NY · New York City
More in Long Island: Melville, 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, Long Island, Westchester, the Hudson Valley, North Jersey and 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.
Service pages for Nassau County, NY
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
What should a multi-office Nassau practice include in its IT scope?
Document each office’s users, connection, equipment and application dependencies, then identify the accounts and files shared between locations. Agree who handles vendor escalation, maintenance and restore testing. Where offices belong to separate entities, access and data boundaries should be explicit.
How should we plan a provider change without replacing everything?
Review the current environment, backups, administrator access and contracts before proposing hardware or cloud changes. Decide what can be supported as it stands and what needs a separately planned project. Agree the handover order, staff communication and validation steps around normal operations.
Do you serve Long Island and Nassau County?
Yes. Nassau County is part of Long Island, one of our named on-site coverage areas, so engineers travel to Long Island for work needing hands: network and server work, and the discovery session that opens a managed relationship. The free external penetration test runs remotely before either. Our office is in Brooklyn, and Nassau is inside the area we already cover.
Do you have experience with medical and dental practices?
Yes, and it is published rather than asserted. Our medical case study covers a practice running seven locations connected in real time over an encrypted VPN mesh, and we maintain a dedicated medical compliance practice. Regulated-data environments — where access has to be attributable, backups have to be provably restorable, and downtime has direct patient impact — are a core part of the work rather than an adjacent one.
Can you connect several Nassau County offices together?
Yes, and on Long Island it is usually the first thing worth fixing. Encrypted site-to-site networking makes several locations behave as one managed environment with one set of permissions, which removes the habit of emailing records between offices because nothing else connects them. Our published medical case study runs seven locations on exactly that architecture.
What happens if we get hit by ransomware?
The honest answer is that the outcome is decided before the attack, by whether your backups are immutable and whether anyone has actually restored from them. Every NetSys client hit by ransomware has fully recovered — a 100% record — and that record rests on tested restores rather than luck. We put immutable offline backups in place, run and document a real restore, and write down the recovery-time objective so you know the answer before you need it.
Do you require a long-term contract?
No — every NetSys agreement is month to month, on Long Island as everywhere else. We keep clients by performing rather than by locking them in; retention runs 98%.
What does managed IT in Nassau County include?
A full IT department without the headcount: a helpdesk your staff can call, 24/7 monitoring and patching across every server and workstation, the security stack behind it — multifactor authentication, managed endpoint detection and response, email filtering, DNS protection, immutable backups — plus Microsoft 365 and cloud administration, vendor management with your ISP and software providers, and on-site engineer dispatch when something needs hands. You get a dedicated account manager rather than a ticket queue.
How much do managed IT services cost in Nassau County?
Nassau County managed IT is priced per user per month, with no published rate card. The quote follows the number of offices, devices and servers, HIPAA or other compliance work, and the on-site time you need. Site buildouts and migrations are separate projects, and agreements run month to month.
Is NetSys an IT company based in Nassau County?
No. We are an IT company headquartered in Brooklyn, at 1 Prospect Park SW, Suite 6E, with a main line of 845-203-3914. Nassau County is a service area rather than a branch, and it sits inside our Long Island on-site region, so engineers travel to Mineola, Hicksville or Great Neck when work needs hands.
What response times do Nassau County clients get?
The same written commitments every managed client gets. The response table on our managed IT services page lists phone, remote and on-site times by severity, and the on-site figure for your offices follows the tier in your agreement. Most tickets are resolved remotely before anyone needs to drive out.
Do managed IT services in Nassau County cover HIPAA for medical and dental practices?
They cover the technical safeguards: individual logins with multifactor authentication, encryption, audit logging, managed endpoint protection and backups with tested restores, documented for your risk analysis. Compliance with HIPAA (45 CFR Parts 160 and 164) remains the practice's own responsibility. This is general information, not legal advice.
Can we buy cybersecurity in Nassau County without full managed IT?
Yes. Security work can be scoped on its own, such as a penetration test, a security assessment or a vCISO engagement. Our Nassau County cybersecurity services page describes that scope, while managed IT clients get the core security stack, from multifactor authentication to immutable backups, inside their agreement.
Bring each office into a clear support agreement.
Tell us your Nassau locations, shared applications and current support arrangement. Request a call to discuss responsibilities, on-site work and recovery requirements.