What patients are saying
Overall rating
4.92
Average wait time
4.71
Bedside manner
4.57
“The appointment was 'informative and reassuring. I felt well taken care of. Knowing that I was able to contact Dr. Martincic made me feel heard and would recommend him with confidence.”
Marilyn S.July 19, 2025
“The staff as you enter the office are friendly, cordial and helpful. Everyone showed care for the patients making sure everyone’s needs were met. The doctor was amenable and he was very clear in all aspects of my concerns. He left the door open for me to seek further information and follow up.”
Dilsia J.March 26, 2025
About Dr. Claudio Martincic
Dr. Martincic graduated from the New York College of Osteopathic Medicine in 1990 and has been practicing for over 20 years in medicine and nephrology. He completed Internship, Residency, and Fellowship training at Brookdale University Hospital and Medical Center, attaining the position of Chief Medical Resident.
Academic affiliations included Clinical Assistant Professor in Medicine at the New York Medical College, Adjunct Clinical Professor of Medicine at the New York College of Osteopathic Medicine, and more recently Clinical Instructor of Medicine at the State University of New York at Stony Brook.
He has held Medical Directorships in several dialysis units including Southampton Hospital Regional Dialysis Unit. He currently serves on the Pharmacy and Therapeutics Committee of the Mather-St. Charles Health Alliance and is Section Chief of Nephrology of St. Charles Hospital.
Dr. Martincic is board certified in internal medicine and nephrology.
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In-network insurances
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Aetna
BlueCross BlueShield
Cigna
Emblem Health
Medicare
UnitedHealthcare
UnitedHealthcare Oxford
Areas of expertise
This doctor's experience enhances their expertise in similar cases. Below are the conditions or surgeries they treat most frequently.
Calcium and Mineral Disorders
Acute kidney failure
Chronic anemia
Parathyroid gland disorder
Kidney disease
Chronic kidney disease
Calcium and Mineral Disorders
Acute kidney failure
Chronic anemia
Parathyroid gland disorder
Office location
Education and background
Practice names
Board certifications
- Nephrology (American Board of Internal Medicine)
Education and training
- Medical School - New York Institute of Technology, New York College of Osteopathic Medicine, Doctor of Osteopathic Medicine
- The Brookdale University Hospital and Medical Center (Fellowship)
- The Brookdale University Hospital and Medical Center (Residency)
Languages spoken
- English
Provider's gender
Male
NPI number
1710998182
Patient reviews
All reviews have been submitted by patients after interacting with the practice.
Overall rating
4.92
Wait time
4.71
Bedside manner
4.57
Your trust is our top concern, so providers can't pay to alter or remove reviews. We also don't publish reviews that contain any private patient health information. Learn more here
84 reviews
Most relevant
The doctor heard our concerns and answered them clearly and was very informative.
Less than 1 year agoInitials hidden
Very fortunate enough to meet Dr. Martincic. Addressed all needs and concerns.
More than 1 year agoPS
Staff and office manager were good. Doctor answered all of my questions.
More than 1 year agoJA
Thank you Dr. M for your help with my mother and my family!
More than 1 year agoRO
Felt better after my treatment seeing him. Very good.
More than 1 year agoRK
The appointment was 'informative and reassuring. I felt well taken care of. Knowing that I was able to contact Dr. Martincic made me feel heard and would recommend him with confidence.
July 19, 2025Marilyn S.Verified patient
The staff as you enter the office are friendly, cordial and helpful. Everyone showed care for the patients making sure everyone’s needs were met. The doctor was amenable and he was very clear in all aspects of my concerns. He left the door open for me to seek further information and follow up.
March 26, 2025Dilsia J.Verified patient
So reassuring and very knowledgeable. He got right to the point, which I appreciated!
Very refreshing to find a doctor like this.
I highly recommend them to anybody .?
March 25, 2024Andrew H.Verified patient
The doctor was highly professional and extremely knowledgeable! He was right on target with the course of action I should pursue!
I would 100% recommend Dr. Martinic to anyone who was in need of a nephrologist!!
(The staff at New York Health also helped make my visit a very pleasant experience!)
February 2, 2024Joann D.Verified patient
Very friendly and very professional.
June 14, 2023Richard C.Verified patient
Great doc and experienced. Thumbs up.
More than 1 year agoMJ
His bedside manner is great. Very personable.
More than 1 year agoDC
Happy to see a doctor and energetic like him.
More than 1 year agoJD
Wait time was ok. Doc and staff were great.
More than 1 year agoOK
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How soon can I make an appointment with Dr. Claudio Martincic?
Generally, Dr. Claudio Martincic has appointments available on Zocdoc within 1 week. You can see Dr. Martincic's earliest availability on Zocdoc and make an appointment online.
Is Dr. Claudio Martincic accepting new patients?
Dr. Claudio Martincic generally accepts new patients on Zocdoc. You can see Dr. Martincic's earliest availability on Zocdoc and schedule an appointment online.
Does Dr. Claudio Martincic accept my insurance?
Choose your insurance plan to verify if Dr. Martincic is in-network.
Can I make an appointment with Dr. Claudio Martincic online?
Yes, you can make an appointment online with Dr. Martincic using Zocdoc. It’s simple, secure, and free.
What practice does Dr. Claudio Martincic work with?
Dr. Claudio Martincic works with New York Health.
Where is Dr. Claudio Martincic's office located?
Dr. Claudio Martincic's office is located at 5316 Nesconset Hwy, Port Jefferson Station, NY 11776.
Which board certifications does Dr. Claudio Martincic have?
Dr. Claudio Martincic is certified by Nephrology (American Board of Internal Medicine).
What are common reasons for patients to see Dr. Claudio Martincic?
Dr. Claudio Martincic frequently sees patients for High Blood Pressure / Hypertension, Kidney Problem , Kidney Stones, Nephrology Consultation, and New Patient Visit. You can see other visit reasons for Dr. Claudio Martincic on their profile.
What languages does Dr. Claudio Martincic speak?
Dr. Claudio Martincic speaks English.
How do patients rate Dr. Claudio Martincic in reviews?
84 patients have reviewed Dr. Claudio Martincic. The overall rating for this doctor is 4.92/5. They have a 4.57/5 rating for bedside manner and a 4.71/5 rating for wait time. You can read individual reviews and ratings on their profile.