Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Neurosurgery

Daniel R. Calnan, MD

Works at hospitals in West Islip, NY · Rockville Centre, NY · Roslyn, NY · New York

Summary

Daniel R. Calnan, MD (Neurosurgery) is listed by Medicare at 3 hospitals in West Islip, NY, Rockville Centre, NY and Roslyn, NY. NPI 1710397492. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Daniel R. Calnan, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

NeurosurgeryPrimary specialty
YesAccepts Medicare assignment
YesOffers telehealth
12Years since medical school (graduated 2014)
Tufts University School Of MedicineMedical school
MaleGender (as listed)
Kimon Bekelis Physician P CGroup practice

Quick answers

Which hospitals does Daniel R. Calnan work at?
Medicare's official clinician data lists Daniel R. Calnan at 3 hospitals: Good Samaritan Hospital Medical Center, Mercy Medical Center and St Francis Hospital - The Heart Center. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Daniel R. Calnan see patients?
Medicare's clinician data lists 1 practice location in Babylon, NY. Call before your visit to confirm the address.
What is Daniel R. Calnan's specialty?
Medicare lists Neurosurgery as the primary specialty.
Does Daniel R. Calnan accept Medicare assignment?
Yes. Medicare's clinician data says Daniel R. Calnan accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
Does Daniel R. Calnan offer telehealth?
Medicare's clinician data says Daniel R. Calnan offers telehealth services. Ask the office which visits can be done by video or phone.
What is the phone number for Daniel R. Calnan?
(631) 482-9977, as listed in official Medicare / NPI Registry data.
What is Daniel R. Calnan's NPI number?
1710397492. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Daniel R. Calnan works

Medicare's Facility Affiliation Data lists Daniel R. Calnan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Daniel R. Calnan is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Daniel R. Calnan as a member of this group (CMS data updated 2026-10-02).

  • Kimon Bekelis Physician P C7 clinicians in the group

Specialties

Find other Neurosurgery doctors in New York →

Other neurosurgeons in New York

Clinicians with the same Medicare primary specialty in New York — not a recommendation.

All neurosurgeons in New York →

Clinician information

CredentialMD
Medical schoolTufts University School Of Medicine
Graduation year2014
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
TelehealthOffers telehealth services
NPI (National Provider Identifier)1710397492
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians