We would like to welcome Mark Ortiz, PA, and Sarah Conway, NP, to our practice!  Mark started in June 2022 and Sarah started in August 2022, and they can both treat patients with any neurologic issue.  To learn more about Mark and Sarah, please visit Our Providers page.

We manage a wide variety of neurologic ailments, with the treatment plan tailored towards each patient's needs.  


To learn more about each of our providers, please click HERE.

Health Insurance

New Patients

Appointment Request

Office Hours

Monday:  10:00 - 6:30 pm

Tuesday:  9:00 - 4:30 pm

Wednesday:  9:00 - 4:00 pm

Thursday:  9:00 - 5:00 pm

Friday:  9:00 - 1:00 pm

Saturday:  closed

Sunday:  closed


We are closed daily for lunch from 12:15 - 1:15 pm.

  • Adult & Adolescent Neurology
  • Sleep Medicine and Sleep Studies
  • EMG & Nerve Conduction Studies
  • Routine EEG and Ambulatory EEG
  • BOTOX® for chronic migraines
  • Trigger Point Injections & Nerve Blocks
  • Transcranial/Carotid Dopplers

Our Services

Please call 631-737-0055 during our regular business hours to schedule an appointment.

Dr. Todd J. Maltese

Eun Ah Helms, RPA-C
Mark Ortiz, RPA-C
Sarah Conway, NP

650 Hawkins Avenue, Suite 7

Ronkonkoma, NY  11779

Phone:  (631) 737-0055

Fax:  (631) 737-0076

Most new patients can be seen within 1-2 weeks.  Please call today to check our availability.

As a healthcare facility treating patients who can be immunocompromised, we

STILL require masks for all patients and staff.  Thank you for your cooperation!

(updated 11/2022)

Testimonials

Contact Us

Clinic Information

Meet the Providers

In June 2016, we modernized our practice with a completely electronic medical records system.  To access your electronic health records, please visit our Patient Portal by clicking HERE.

We accept most major insurance plans.  Click HERE for a list of the insurances that we accept.

Call Us:  631-737-0055

Mid-Suffolk Neurology & Sleep Medicine