
John J. Loscalzo, MD
Medical OncologyHematology Oncology
Highlights
Languages
- English
Gender
MaleAbout John J. Loscalzo
Title
Chief of Hematology and Oncology, Good Samaritan Hospital
Locations
- Oncology, The Cancer Institute at Good Samaritan University Hospital
- 111 Beach Drive, West Islip, NY 11795
- Get Directions
- phone: 631-417-8600
- fax: 631-666-0684
Expertise
Education
- Fellowship: North Shore University Hospital, Hematology/Oncology, 1997
- Residency: North Shore University Hospital, Internal Medicine, 1994
- Medical School: New York Medical College, 1991
Board Certifications
- Hematology: American Board of Internal Medicine, 1998
- Medical Oncology: American Board of Internal Medicine, 1997
Insurance
- Aetna
- Aetna Medicare PPO
- Affinity
- Affinity Essential
- Affinity Exchange
- Affinity Medicaid
- Affinity Medicare
- Agewell
- Agewell Medicare
- American Plan Administrators PPO
- Anthem
- Anthem Child Health Plus
- Anthem Essential Plan 1 & 2
- Anthem Essential Plan 3 & 4
- Anthem Medicaid and Individual
- Anthem Medicare
- Beechstreet
- Blue Cross Mcd Hmo
- Blue Cross Medicaid
- Center Light Hcare
- Center Light Hcare Medicaid
- Center Light Medicare
- Centivo
- Cigna
- Cigna Medicare
- Coventry Health Care
- Elderplan
- Elderplan Medicaid
- Emblem
- Emblem HIP
- Emblem Medicaid
- Emblem Medicare
- Fidelis
- Fidelis Health Exchange
- Fidelis Medicaid
- Fidelis Medicare
- First Health
- GHI
- GHI CBP NY City Employee
- GHI CBP PPO EPO
- GHI HMO
- GHI Medicare Choice PPO/Value Options
- GHI NYS NYC Value Options
- GHI PPO EPO
- HCP Child Health Plus
- Health First
- HEALTH FIRST EP 3&4
- Health First Medicaid
- Health First Medicaid HARP EP 3&4
- Health First Medicare
- HEALTH FIRST RISK EP 3&4 ALT
- Health First Risk Medicaid HARP EP 3&4 Alternate Plan
- Healthsmart Benefit Solutions
- HIP
- HIP Child Health Plus
- HIP Hcare Partners Essent Pl 1&2
- HIP Hcare Partners Essential 3&4
- HIP Hcare Partners HMO
- HIP Hcare Partners Medicaid
- HIP Hcare Partners Medicare HMO
- HIP Hlth Essential Pl 1 & 2
- HIP Hlth Essential Pl 3&4
- HIP HMO POS
- HIP Medicaid
- HIP Medicare HMO
- HIP Medicare PPO
- HIP NY City HMO
- HIP PPO EPO
- HIP Somos Child Health Plus
- HIP Somos Essential Plan 1&2
- HIP Somos Essential Plan 3&4
- HIP Somos Medicaid/HARP
- Humana
- Humana Medicare
- Local
- Local 1 Bricklayers Magnacare
- Local 1102 Magna
- Local 1199 Emp SJH SEIU
- Local 1199 National Benefit Fund
- Local 1205
- Local 1298 Magna
- Local 138 Operating Engineers Magna
- Local 1500
- Local 1964
- Local 210 Retiree Grp Magna
- Local 210 Unity Welfare Fund
- Local 25 Ibew Magna
- Local 272 Welfare Fund Magna
- Local 29 Blasters & Drillers & Minors
- Local 3 Magna
- Local 30 Trust Fund Engineers Magna
- Local 338 Magna
- Local 342 50 Magna
- Local 342 Insurance Trust Magna
- Local 361 Magna Care
- Local 381 Magna
- Local 40 Iron Workers
- Local 463 Health Fund
- Local 522
- Local 66 Magna
- Local 6A Cement And Concrete
- Local 802 Musicians
- Local 803 Ibt Health And Welfare Fund Inc.
- Local 804
- Local 806 Bridge Painters - Alicare
- Local 810
- Local 810 Union Wire Metal
- Local 812 Magna
- Local 888 Magna
- Magna Direct Plus
- Magna Preferred PPO
- Medicaid
- Medicaid Out Of State
- Medicare
- Medicare Railroad
- Meritain Health
- Meritain Health Aetna PPO
- Molina
- Molina Exchange
- Molina Medicaid
- Multiplan
- Optum Health/Blue Cross
- Oscar
- Oscar Health Exchange
- Other Medicaid
- Other Medicare
- Oxford
- Oxford Bh
- Oxford Medicare
- Partners Health Plan
- Partners Health Plan Medicare
- Secure Horizon Mcr Complete PPO
- Three Rivers
- Three Rivers Provider Network
- UMR
- UMR UHC Salt Lake City
- United HC Choice Plus POS
- United HC Community Child Health Plus
- United HC Community Medicaid
- United HC Essential Pl 1 & 2
- United HC Essential Pl 3&4
- United HC Exchange
- United HC HMO POS
- United HC Medicare HMO
- United HC Medicare PPO
- United HC Narrow Network
- United Hc Nexus ACO R
- United HC NexusACO OA
- United HC PPO
- United HC PPO Empire Plan
- United HC PPO EPO Indemnity
- United HC Speech
- United Health Plus PPO
- United Healthcare
- United Healthcare Medicaid
- United Healthcare Medicare
- United Healthcare Mpn
- VNS Choice
- Vns Choice Medicare Replacement
- Wellcare
- Wellcare Medicaid
- Wellcare Medicare
- World Trade Ctr Fund
Ratings & Reviews
4.9 out of 5
225 ratings, 36 reviewsThe Patient Satisfaction Rating is an average of all responses to the care provider related questions shown below from our survey. Patients that are treated in outpatient or hospital environments may receive different surveys, and the volume of responses will vary by question.
- 5 out of 5 starsReviewed on 1/28/2026
Dr. Loscalzo is an excellent doctor who truly cares about you. He explains every thing so that you can understand what is going to happen and he listens to your questions and tries to give you good answers.
- 5 out of 5 starsReviewed on 1/9/2026
The best
- 5 out of 5 starsReviewed on 1/6/2026
Dr. Loscalzo is always informative and compassionate. He is an asset to the hospital. Some of the other care providers should take a lesson from him.
- 5 out of 5 starsReviewed on 12/5/2025
It's always a pleasure to meet with Dr. Loscalzo. He is the quintessential doctor. I'm normally averse to doctor visits but I move with intention for my visits wit Dr. Loscalzo.
- 5 out of 5 starsReviewed on 11/28/2025
Dr. Loscalzo is a very caring doctor and one that I look forward to seeing every 3 months. I have been going to this practice, before it was taken over by CHS, 35 years. Always great!
- 5 out of 5 starsReviewed on 11/8/2025
Dr Loscalzo is very professional, kind and considerate to what his patients (I) experience. He listens and answers any/all questions, whether asked by me or who is accompanying me to my appointment(s). Recently, another provider reached out to Dr Loscalzo regarding my recent scans, wanting to perform a procedure "I can do." Dr Loscalzo shared this with me and as I sat there fearful he was going to suggest the same, he pleasantly said he told the provider, this is not in my patients best interest at this time. I am ever grateful, that he looks at the full picture and has my health and longevity as a priority.
- 5 out of 5 starsReviewed on 11/8/2025
Dr. Loscalzo is wonderful. He make sure I understand the issue and the treatment.
- 5 out of 5 starsReviewed on 11/7/2025
Excellent! Explained everything in words I could understand. Before I arrived, he had already communicated with my PCP, Gastroenterologist and Urologist Well, Done DR. L
- 5 out of 5 starsReviewed on 11/3/2025
I could not survive without Dr. Loscalzo! He always explains and listens to me!
- 5 out of 5 starsReviewed on 10/29/2025
Dr Loscalzo has been my doctor for 8 years. He is the best. So upbeat
- 5 out of 5 starsReviewed on 10/24/2025
Dr. Loscalzo excellent
- 5 out of 5 starsReviewed on 10/17/2025
Dr Loscalzo is so professional, kind and understanding. Explains everything ti my understanding
- 5 out of 5 starsReviewed on 9/26/2025
He is fantastic, thorough and professional. I trust him completely! Great man.
- 5 out of 5 starsReviewed on 9/26/2025
Dr. Loscalzo is a wonderful and caring doctor. I have been his patient for many years.
- 5 out of 5 starsReviewed on 9/12/2025
Dr John Loscalzo is always very courteous, respectful, professional and caring!
- 5 out of 5 starsReviewed on 9/10/2025
Dr. Was so nice and accommodating
- 5 out of 5 starsReviewed on 9/2/2025
Good experience. Dr. Loscalzo has been my dr. for years now. When I have an appointment with him it relaxing and casual like talking to a friend.
- 5 out of 5 starsReviewed on 8/30/2025
Always all good
- 5 out of 5 starsReviewed on 8/24/2025
One of the best experiences
- 5 out of 5 starsReviewed on 8/11/2025
Dr Loscalzo is the ultimate physician
- 5 out of 5 starsReviewed on 7/20/2025
Dr. Loscalzo is a kind and caring doctor. He takes his time and answers all your concerns. I highly recommend him to anyone who might need his care and expertise.
- 5 out of 5 starsReviewed on 7/18/2025
Doctor made me feel at ease with my problems.
- 5 out of 5 starsReviewed on 7/11/2025
I have been a patient of Dr. Loscalzo for 20 years. Yes, I followed him wherever & now to you. He is the most knowledgeable, compassionate doctor that I have ever had. There are no words to describe his passion & interest in my case (ITP). I wish all doctors were like him.
- 5 out of 5 starsReviewed on 7/7/2025
Dr. Loscalzo's expertise, and concern are much appreciated his care makes me very comfortable.
- 5 out of 5 starsReviewed on 6/30/2025
Dr. Loscalzo is my hematologist and since I'm in a management stage, I don't need to see him very often. He's such a compassionate and patient man.
- 5 out of 5 starsReviewed on 6/28/2025
Excellent care and support
- 5 out of 5 starsReviewed on 6/25/2025
Dr Loscalzo was extremely thorough in explaining my blood work.
- 5 out of 5 starsReviewed on 6/18/2025
Dr. Loscalzo is excellent. He is kind, engaging, explains everything well.
- 5 out of 5 starsReviewed on 6/6/2025
Very good staff
- 5 out of 5 starsReviewed on 6/4/2025
Great
- 5 out of 5 starsReviewed on 5/24/2025
Dr. Loscalzo is easy to understand. He explains everything to you in words that you can understand. He is very caring.
- 5 out of 5 starsReviewed on 5/22/2025
I have never been disappointed, I absolutely love Dr. Loscalzo and his team.
- 5 out of 5 starsReviewed on 5/6/2025
Good.
- 5 out of 5 starsReviewed on 5/2/2025
Always great
- 5 out of 5 starsReviewed on 4/24/2025
Dr. Loscalzo explained everything about my 5 year treatment being over. He did a great job the past 5 years.
- 5 out of 5 starsReviewed on 4/18/2025
Thank Dr Loscalzo