Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. William J Sonstein, MD

Individual provider Specialist · NPI 1669495305

Dr. William J Sonstein, MD is a Neurosurgery in Rockville Centre, New York. Graduated from Temple University School of Medicine in 1991, 35 years ago. Practices with Neurological Surgery Practice of Long Island PLLC, a 14-clinician group and accepts Medicare assignment. Licensed in New York.

Years since qualifying
35
Trained at
Temple University School of Medicine
Licensed in
NY
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

100 Merrick Rd Ste 128 W
Rockville Centre, NY 11570-4800
Phone: (516) 255-9031
Fax: (516) 255-6230
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Specialist (primary) Taxonomy 174400000X · Licence 195202-2 (NY)

Record details

NPI number1669495305
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 25, 2006
Last updated in NPPESJuly 8, 2007

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyNEUROSURGERY
Medical schoolTEMPLE UNIVERSITY SCHOOL OF MEDICINE
Graduated 1991 (35 years in practice)
Group practice Neurological Surgery Practice Of Long Island Pllc — 14 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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