Carpal Tunnel

Cold Sores

Diverticulitis

Fibromyalgia

Hemorrhoids

Hypothyroidism

Impetigo

Kidney Stones

Pancreatitis

Preeclampsia

Sepsis

Tonsillitis

Ulcerative Colitis

Urinary Tract Infection

Vitiligo

Conditions

CVS Health (formerly Aetna)

Florida Blue / Guidewell

Elevance Health (formerly Anthem)

Blue Cross Blue Shield (BCBS)

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Aflac

Allstate

Centene (Fidelis Care)

HealthFirst

Humana Health

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Medicare

UnitedHealthcare

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Miami, FL

Atlanta, GA

Chicago, IL

Baltimore, MD

Boston, MA

New York, NY

Brooklyn, NY

Houston, TX

Dallas, TX

Philadelphia, PA

Saint Louis, MO

Locations

Annual Physical

Annual Skin Screening

Colonoscopy

Couples Therapy

Dermatology Consultation

Hypnosis

Knee Replacement Surgery

Laser Hair Removal

Lasik Surgery

Liposuction

Marriage Counseling

Nexplanon Insertion

Plastic Surgery

Psychotherapy

Tattoo Removal

Procedures

Addiction Medicine Specialist

Cardiologist

Dermatology is the branch of medicine dealing with the skin. It is a speciality with both medical and surgical aspects. A dermatologist is a specialist medical doctor who manages diseases related to skin, hair, nails, and some cosmetic problems.

Dermatologist

Endocrinologist (Diabetes & Hormones Specialist)

Endocrinologist

Gastroenterologist (Stomach & Bowel Specialist)

Gastroenterologist

General Practitioner

An obstetrician-gynecologist, or OB-GYN, is a healthcare professional that specializes in female reproductive health.

OB/GYN

Ophthalmologist

Optometrist

Orthopedic Surgeon

Otolaryngologist

Pediatrician

Podiatrist

Psychiatrist / Neurologist

Urologist

Specialists

New York Univ Sch of Med, New York Ny

New York University School of Medicine

Mather Hospital

People beware! I would never bring my son to him again. This guy is just there for the paycheck. Speaks to people like they are below him. No care of patient&#039;s needs, at all. Receptionist is a dip-stick and is of no help.

BEWARE!

Dr. Jack Greenwood, MD is a board certified Pediatric Neurologist in Port Jefferson, NY with over 45 years of experience.
  Learn more about Dr. Greenwood, practice locations, insurances accepted, and read reviews on Everyday Health-CARE.

Dr. Jack Greenwood, MD | Pediatric Neurologist in Port Jefferson, NY

Dr. Jack Greenwood, MD

acceptsNewPatients

Aging Brain (Neuropsychological Testing)

Cortical Basal Ganglionic Degeneration (CBGD)

Deep Brain Stimulation

Disturbance of Skin Sensation

Electroencephalogram (EEG)

Evoked Potential Testing

Gait Simulation

Greater Occipital Nerve (GON) Block

Hemifacial Spasm Consultation

Infectious Neurology Consultation

Lumbar Radiculopathy

Nerve Biopsy

Neurological (Botox, IFN, Trigger Point) Injection

Neurology Consultation

Neurology Critical Care Consultation

Neurology Follow Up

Neuropathology Consultation

Neuropathology Follow Up

Neuropsychiatry Consultation

Neuropsychiatry Follow Up

Neuropsychology Evaluation

Neuropsychology Follow Up

Peripheral Biopsy

Phalen's Test

Post-Stroke / Neurology Therapy

Responsive Neurostimulation (RNS)

Sleep Disorder (Post Head Injury)

Stroke Check-up / Prevention

Tilt Table Test

Transcranial Doppler

Transcranial Magnetic Stimulation (TMS)

Vagus Nerve Stimulation (VNS)

Vascular Neurology Consultation

Vascular Neurology Follow Up

Video Nystagmography (VNG)

WADA Test

Dr. Jack Greenwood, MD is a Pediatric Neurologist, who primarily practices in Port Jefferson, NY. He has been practicing for over 45 years and is board certified. Dr. Greenwood graduated from New York University School of Medicine and completed his residency at Mt Sinai Med Ctr, Pediatrics.
  
Dr. Greenwood is fluent in English and French,  and is currently seeing new patients. Dr. Greenwood’s practice accepts Medicaid, Medicare, UnitedHealthcare and other major insurance plans. To book an appointment or to confirm insurance options, please call Dr. Greenwood’s office at (631) 474-0444.

National Provider Identifier (NPI)

English

French

Pediatric Neurologist

Neurologist

Humana Health 

Washington DC, DC

An orthopedic surgeon has specialization in preserving, investigating, and restoring the form and function of the extremities, spine, and related structures through medical, surgical, and physical methods. They care for patients with musculoskeletal issues, including congenital deformities, trauma, infections, tumors, metabolic disturbances, and degenerative diseases affecting the spine, hands, feet, knees, hips, shoulders, and elbows in both children and adults. Additionally, orthopedic surgeons address primary and secondary muscular problems and the impact of central or peripheral nervous system lesions on the musculoskeletal system.

An obstetrician/gynecologist has specialized knowledge, skills, and expertise in the medical and surgical management of the female reproductive system and related disorders. This physician acts as a consultant to other healthcare providers while also serving as a primary care physician for women, addressing their unique health needs throughout various stages of life.

Obstetrician / Gynecologist (OBGYN)

A pediatrician focuses on the physical, emotional, and social health of children from birth through young adulthood. Their care includes a wide range of health services, from preventive healthcare to diagnosing and treating acute and chronic diseases. Pediatricians consider the biological, social, and environmental influences on a child's development, as well as how diseases and dysfunctions can impact growth and overall development.


Dermatologists are medical professionals trained to diagnose and treat a wide range of skin conditions in both children and adults, including skin cancers, melanomas, and other tumors. They also manage disorders of the mouth, external genitalia, hair, and nails, and are skilled in treating conditions like dermatitis, allergic reactions, and skin manifestations of systemic diseases. Dermatologists receive specialized training in dermatopathology and dermatologic surgical techniques, and address cosmetic issues such as hair loss and scarring. Additionally, they use laboratory methods to diagnose immune-related skin disorders, often collaborating with immunohematologists for expert consultation and targeted therapies.

An internist specializing in disorders of the endocrine glands, including the thyroid and adrenal glands. This specialist also manages a range of conditions such as diabetes, metabolic and nutritional disorders, obesity, pituitary disorders, and menstrual and sexual health issues.

An internist focused on diagnosing and treating disorders of the digestive system, encompassing the stomach, intestines, liver, and gallbladder. This specialist manages conditions like abdominal pain, ulcers, diarrhea, cancer, and jaundice, and performs intricate diagnostic and therapeutic procedures using endoscopes to examine internal organs.

Dr. Jack Greenwood, MD

Pediatric Neurologist

Neurologist

45 Years of Experience

45 Years of Experience

Ratings & Reviews

Connect with DR. Greenwood

120 N Country Rd

Doctors by Category

Specialists

Addiction Medicine Specialist

Cardiologist

Dermatologist

Endocrinologist

Gastroenterologist

General Practitioner

OB/GYN

Ophthalmologist

Optometrist

Orthopedic Surgeon

Otolaryngologist

Pediatrician

Podiatrist

Psychiatrist / Neurologist

Urologist

Conditions

Carpal Tunnel

Cold Sores

Diverticulitis

Fibromyalgia

Hemorrhoids

Hypothyroidism

Impetigo

Kidney Stones

Pancreatitis

Preeclampsia

Sepsis

Tonsillitis

Ulcerative Colitis

Urinary Tract Infection

Vitiligo

Procedures

Annual Physical

Annual Skin Screening

Colonoscopy

Couples Therapy

Dermatology Consultation

Hypnosis

Knee Replacement Surgery

Laser Hair Removal

Lasik Surgery

Liposuction

Marriage Counseling

Nexplanon Insertion

Plastic Surgery

Psychotherapy

Tattoo Removal

Locations

Los Angeles, CA

San Diego, CA

San Francisco, CA

Washington, DC

Miami, FL

Atlanta, GA

Chicago, IL

Baltimore, MD

Boston, MA

New York, NY

Brooklyn, NY

Houston, TX

Dallas, TX

Philadelphia, PA

Saint Louis, MO

Insurances

CVS Health (formerly Aetna)

Florida Blue / Guidewell

Elevance Health (formerly Anthem)

Blue Cross Blue Shield (BCBS)

Cigna

Aflac