Dr. Rajkumar G. Mariwalla, MD | West Islip, NY | Gastroenterology

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Dr. Rajkumar Mariwalla is a gastroenterologist with dual board certification in gastroenterology and internal medicine. He earned his medical degree from Maulana Azad Medical College and completed his residency training at North Hampton General Hospital. With over five decades of medical practice, Dr. Mariwalla brings extensive experience to his specialty care. He is fluent in both English and Spanish, enabling him to serve diverse patient populations.

Dr. Mariwalla maintains hospital affiliations with Good Samaritan University Hospital and practices at multiple locations throughout West Islip and Bay Shore, New York. His clinical expertise includes treating colon polyps, acid reflux disease, and diverticular disease. He performs essential diagnostic procedures such as colonoscopies and lower gastrointestinal endoscopies to evaluate digestive health concerns. Patients have given Dr. Mariwalla an average rating of 3.6 stars for his care.

AI-generated from data on this provider profile.

accepting new patients
3.5

33 Ratings
51 years of experience
48 insurance plans accepted
speaks English, Spanish
North Hampton General Hospital
8 written reviews
2 specialties
12 areas of expertise
2 board certifications
1 hospital affiliation
3 office locations
Male

Gave an accurate diagnosis
Had a good bedside manner
Spent time with me

Based on patient feedback. Read the reviews

Dr. Mariwalla's Ratings and Reviews

3.5

33 Ratings with 8 written Reviews

Average Wait Time 28 Minutes

How was your appointment with
Dr. Mariwalla?

Patients’ Perspective

Gave an accurate diagnosis: (13) Did WellNeeds Improvement (2)
Had a good bedside manner: (11) Did WellNeeds Improvement (5)
Spent time with me: (10) Did WellNeeds Improvement (4)
Provided follow-up after the visit: (9) Did WellNeeds Improvement (4)
Flexible scheduling: (11) Did WellNeeds Improvement (4)
Saw me in a timely manner: No Ratings
Staff was courteous: No Ratings

33 ratings & reviews

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Showing 1 to 8 of 8 reviews

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Worst office experience ever experienced Waited over 1 hour to see this guy who spent less than 10 min. speaking with me... He prescribed a med that was over $100. a month with insurance so I asked if there is a less expensive alternative... Spent the entire Friday waiting for a reply while the staff kept lying and pointing fingers at each other about getting the med refilled... then Donna 5:30p [very rude] said they were told since 9a that he hasn't checked his messages and will get back to me monday.... Monday comes no call so I have to follow up Kim just connects you to a 6 min hold to vm for prescription dept. Then Susan says on 2nd call of the day that the Dr. doesn't prescribe the medS the insurance company does. I had her repeat it more than once bc the pharmacy and insurance company both said the Dr. needs to prescribe meds... Worst experience ever Would not reccomend this Dr. or office to anyone... Choose another Dr.

January 8th, 2024

1 person found this helpful

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My son and I have been patients of Dr. Mariwalla for years A great doctor and an excellent, easy medical experience. No need to be afraid.

March 7th, 2022

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Worst staff I have ever seen! They forgot us in chairs for 2 hours, even after asking the front desk twice- then they forgot to get me when giving my husband results- the office manager is so incompetent that after to complaining to her she did nothing! She should have let the doctor know when we were there that there was a problem! If she knew her doctor she should have known he would want to know!

April 9th, 2019

1 person found this helpful

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Waiting in chairs for over two hours for a scheduled procedure

April 8th, 2019

1 person found this helpful

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Not only a Doctor but a friend to his patients. Been with him over 10 years

March 28th, 2018

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Dr Mariwalla is an excellent doctor. He is very caring and whenever I have gone in to see me he has taken the time to listen to me and then diagnosed the problem accurately. There were times when I was very anxious and yet he managed to calm me down. I trust him completely.

August 24th, 2015

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He is lazy, and doesn't follow up. He sends out tests and doesn't get the results, or even sends to the wrong lab! I do not recommend this doctor. He is awful.

May 9th, 2014

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Dr. Mariwalla is the most caring man I have ever met. His practice is very busy, but he remembered everything about me. He is an expert, and has tons of experience. The staff is polite and helpful, and Dr. Mariwalla always makes me feel comfortable and confident. I highly recommend him and think he's just the best.

July 7th, 2013

Island Gastroenterology Consultants Pc

1111 Montauk Hwy Fl 3 Ste 1West Islip, NY 11795

Tel: (631) 669-1171

Mon9:00 am - 6:30 pm

Tue9:00 am - 6:30 pm

Wed9:00 am - 6:30 pm

Thu9:00 am - 6:30 pm

Fri9:00 am - 5:00 pm

SatClosed

SunClosed

Good Samaritan Hospital Medical Center

1000 Montauk HwyWest Islip, NY 11795

Tel: (631) 376-3000

South Shore University Hospital

301 E Main StBay Shore, NY 11706

Tel: (631) 968-3000


Dr. Rajkumar G Mariwalla, MD	Jan Seiler, APRN	Dr. Divya Mallam, MD	Dr. Michael Dann, MD
Gastroenterology	Gastroenterology	Gastroenterology	Gastroenterology
Accepts New Patients	Accepts New Patients	Accepts New Patients	Accepts New Patients
3.5 (33 Ratings)	0 (0 Ratings)	4.3 (6 Ratings)	5 (8 Ratings)
51 Years of Experience		16 Years of Experience	22 Years of Experience
No Virtual Visit Option	Virtual Visit Available	Virtual Visit Available	Virtual Visit Available
Speaks English, Spanish	Speaks English	Speaks English	Speaks English
West Islip , NY	Montgomery , AL	NEW YORK , NY	NEW YORK , NY
Med School: Maulana Azad Med Clg	Med School: Georgia State University	Med School: State University of New York (SUNY) Downstate Health Sciences University College of Medicine	Med School: State University of New York
Current Profile	View Profile	View Profile	View Profile

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Abdominal Pain
Acid Reflux Disease (Gastroesophageal Reflux / GERD)
Acid Reflux Disease (GERD)
Celiac Disease
Colonoscopy
Constipation
Gastrointestinal Hemorrhage
Hemorrhoids
Hepatitis C
Internal Medicine
Irritable Bowel Syndrome (IBS)
Ulcerative Colitis

MEDICAL LICENSE

Medical Doctor, New York, 2027, Active

EDUCATION & TRAINING

Residency

North Hampton General Hospital

Medical School

Maulana Azad Med Clg

Maulana Azad Medical CollegeGraduated in 1975

Diane M Grassi
Nurse Practitioner
| Manhasset, NY
(0)
Joan Marjorie Hainsley-Jones
Nurse Practitioner
| STONY BROOK, NY
(0)
Dr. Davida Yaffa Goltz, MD
Vascular Neurology
12 Years Exp | Plainview, NY
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Dr. Chizara Ogechi Nwade, MD
Public Health & General Preventive Medicine
9 Years Exp | Jamaica, NY
(0)
Dr. Qiao Zhang, MD
Anesthesiology
44 Years Exp | Ithaca, NY
(0)
Dr. Daniel Cucco, MD
Psychiatry
14 Years Exp | Mineola, NY
(0)
Dr. Robert Ai-Fung Chow, MD
Infectious Disease
14 Years Exp | Bay Shore, NY
(0)
Dr. Kamilla Stefanie Greenidge, MD
Anesthesiology
18 Years Exp | GARDEN CITY, NY
(1)
Dr. Justina Maria Hessel, MD
Critical Care Medicine
19 Years Exp | Manhasset, NY
(2)
Dr. Sean Dhar, MD
Critical Care Medicine
19 Years Exp | Manhasset, NY
(5)

Which hospitals is Dr. Rajkumar Mariwalla affiliated with?: Dr. Rajkumar Mariwalla is affiliated with Good Samaritan University Hospital.
Does Dr. Rajkumar Mariwalla accept virtual/telehealth appointments?: Dr. Rajkumar Mariwalla has not indicated that they accept virtual/teleheatlh appointments. Contact their office through their Vitals profile to check for availability.
What languages does Dr. Rajkumar Mariwalla speak?: Dr. Rajkumar Mariwalla speaks English and Spanish.
Does Dr. Rajkumar Mariwalla accept my insurance?: You can see the insurance plans that Dr. Rajkumar Mariwalla accepts on their Vitals profile.
How can I make an appointment with Dr. Rajkumar Mariwalla?: You can find contact information for Dr. Rajkumar Mariwalla here on Vitals.

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