Neurologist | Child Neurology | 52+ years experience

Dr. Jack M Greenwood, MD

120 N Country Rd, Port Jefferson, New York, 11777-2604

About Dr. Jack M Greenwood

Dr. Jack M Greenwood is a neurologist based in Port Jefferson, New York with 52 years of experience in Child Neurology. He completed his graduation from New York University School Of Medicine in 1974. He accepts the Medicare-approved amount. Patients will not be billed for any more than the Medicare deductible and coinsurance. Active license number of Dr. Jack M Greenwood is 124686 for Child Neurology in New York. His current practice location is 120 N Country Rd, Port Jefferson. Patients can reach him at 631-474-0444 or can fax him at 631-928-8605. Dr. Jack M Greenwood is MD in Child Neurology and his NPI number (Unique professional ID assigned by NPPES) is 1851396865.

Dr. Jack M Greenwood specializes in neurology with special skills in diagnosis and treatment of neurologic disorders of the neonatal period, infancy, early childhood, and adolescence.

Practice Information

Dr. Jack M Greenwood speciality, credentials, practice address, contact phone number and fax are as below. Patients can call on the below given phone number for appointment.

Provider Name Dr. Jack M Greenwood
Specialization Child Neurology
Credentials MD
Accepts Medicare Assignment Yes
Experience 52+ years
Medical School Attended New York University School Of Medicine
Graduation Year 1974
Gender Male
Practice Address: 120 N Country Rd,
Port Jefferson, NY - 11777-2604
Fax 631-928-8605

Professional Identification Codes

NPI number stands for National Provider Identifier which is a unique 10-digit identification number issued to health care providers in the United States by the Centers for Medicare and Medicaid Services (CMS). NPI details are as mentioned below.

PAC ID 9436058674
Enrollment ID I20040107000130
NPI Number1851396865
NPI Enumeration Date: 16 Jun, 2005
NPI Last Update On: 02 Apr, 2008

Medical Licenses:

Healthcare professionals can hold one or more medical licenses for different specialities in the same state or different states. Related medical licenses for Dr. Jack M Greenwood are as mentioned below.

License NumberSpecializationStateStatus
124686Child Neurology New YorkPrimary

Other Medical Identifiers

Other legacy medical identifiers associated with Dr. Jack M Greenwood such as Medicaid, Medicare PIN, NSC, UPIN etc. are mentioned as below.
IdentifierTypeStateIssuer
00664526MedicaidNew York

Mailing Address

Business mailing address can be used for mailing purpose only, for visiting purpose patients need to refer above mentioned Practice address.

Dr. Jack M Greenwood
120 N Country Rd,
Port Jefferson, NY - 11777-2604
Phone: 631-474-0444
Fax: 631-928-8605

Book an Appointment with Dr. Jack M Greenwood

To schedule an appointment, contact Dr. Jack M Greenwood at 120 N Country Rd, Port Jefferson, New York or call on below stated phone number.

Call to Book an Appointment

Frequently Asked Questions

Below are some commonly asked questions about Dr. Jack M Greenwood:

Dr. Jack M Greenwood is a neurologist specializing in Child Neurology. He specializes in neurology with special skills in diagnosis and treatment of neurologic disorders of the neonatal period, infancy, early childhood, and adolescence.

Dr. Jack M Greenwood completed his education (MD) from New York University School Of Medicine in 1974.

Dr. Jack M Greenwood has approximately 52 years of experience in Child Neurology.

Yes, Dr. Jack M Greenwood accepts Medicare assignment, meaning the provider participates in Medicare and accepts Medicare-approved amounts for eligible services.

Yes, Dr. Jack M Greenwood is currently accepting new patients. To schedule an appointment, contact the office directly and schedule an appointment.

Dr. Jack M Greenwood practices at 120 N Country Rd, Port Jefferson, New York, 11777-2604.

To schedule an appointment with Dr. Jack M Greenwood, please contact the office at 631-474-0444.

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**Data of this site is collected from Medicare & Medicaid Services (CMS) and NPPES. Last updated on 14 September, 2026.