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In West Islip, Dr. Daniel M. Birk works as a neurosurgeon at Nitin Mariwalla MD PLLC.

He graduated from Columbia University College of Physicians and Surgeons in 2010, which means 16 years have passed since medical school.

You'll find Dr. Birk at 1000 Montauk Hwy, West Islip, NY 11795. Call (631) 500-9400 to schedule. Other listed locations: 1175 Montauk Hwy Suite 3, West Islip, NY 11795; 160 Old Country Rd, Riverhead, NY 11901. 12 clinicians bill Medicare through Nitin Mariwalla MD PLLC, so it is a group practice rather than a solo office. He accepts Medicare assignment — useful to know if you are on traditional Medicare.

Hospital affiliations on file with Medicare: St. Catherine of Siena Hospital, St. Charles Hospital and John T Mather Memorial Hospital of Port Jefferson.

Reviews here come only from patients. If you've seen Dr. Birk, add yours.

Key facts

Specialty
Neurosurgeon
Credentials
MD
Practice
Nitin Mariwalla MD PLLC
Address
1000 Montauk Hwy, West Islip, NY 11795
Phone
(631) 500-9400
Other locations
1175 Montauk Hwy Suite 3, West Islip, NY 11795; 160 Old Country Rd, Riverhead, NY 11901
Medical school
Columbia University College of Physicians and Surgeons (2010)
Hospital affiliations
St. Catherine of Siena Hospital, St. Charles Hospital, John T Mather Memorial Hospital of Port Jefferson
Medicare assignment
Accepts
NPI number
1578880274
NY license no.
287264

Medicare, Medicaid and hospitals

Medicare patients (2024)
110 people with traditional Medicare, average age 73
Most common services billed to Medicare
  • Partial removal of spine bone with release of lower spinal cord and/or nerves, 1 segment
Procedures on Medicare Care Compare
  • Spinal fusion 83 procedures
  • Laminectomy or laminotomy (partial removal of spine bones) 19 procedures
Hospital pages
John T Mather Memorial Hospital of Port Jefferson · St. Catherine of Siena Hospital · St. Charles Hospital

Medicare figures cover people with traditional (fee-for-service) Medicare only; services billed for fewer than 11 patients are not published.

Comparing neurosurgeons? See 9 in West Islip or 48 across Long Island.

Other neurosurgeons in West Islip

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Frequently Asked Questions

With Nitin Mariwalla MD PLLC, at 1000 Montauk Hwy, West Islip, NY 11795.

Call the office at (631) 500-9400.

Yes — Dr. Birk accepts Medicare assignment, taking the Medicare-approved amount as full payment for covered services.

St. Catherine of Siena Hospital, St. Charles Hospital and John T Mather Memorial Hospital of Port Jefferson.

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