Dr Calvin Ong's colorectal clinic in Singapore provides specialist care and personalised treatment plans for a range of colorectal conditions.
Homeowners contacting Dr Calvin Ong IBD Clinic typically ask about Digestive & Internal Medicine. The team positions itself as a working healthcare outfit rather than a generalist, so you can expect questions about scope, access, and timing before a quote is confirmed.
Dr Calvin Ong IBD Clinic covers all of Singapore, which is useful if you live in a less-central estate or need a provider that can follow a recurring job to different addresses. The business is KakiList-verified, meaning a real person has confirmed the operating details and contact channel. Google reviewers currently give Dr Calvin Ong IBD Clinic a strong average of 5/5 across 87 reviews, which is a reasonable signal of consistency for a healthcare provider.
To move forward with Dr Calvin Ong IBD Clinic, WhatsApp is the most efficient channel: describe the problem, share a photo if applicable, and mention your location. KakiList doesn't charge either party, so the quote you receive is the quote the provider actually offers.
I was referred to Dr Calvin Ong by my Healthier Sg Doc due to an irregularity in my health check-up results. The CCA clinic at Farrer Park was able to accommodate me for an appt slot the next working day, I was indeed thankful for this. Dr Ong is a reassuring professional, he told me to look at the positive side and not jump to conclusions. He also carefully explained what the procedure entails and the financials available to use the HMI Med OT. My colonoscopy procedure with him was arranged the following week. With God’s Grace and an experienced doc helming, the entire procedure went very well. I was in no discomfort at any point. The scope outcome was favourable and Dr Ong immediately told me the good news once I was out of my sedation state. I am grateful to Dr Ong and his clinical team at CCA Farrer Park for making this whole nervy episode palatable for me.
A Specialist Who Truly Cares Dr. Ong Jianming Calvin is truly exceptional. I was pleasantly surprised by his patience and clarity. He took the time to explain everything about my condition and the procedure (endoscopy on 21 Oct) without rushing me, this is a rare trait for a specialist. His professional skill during the endoscopy was top-notch, it was smooth, efficient, and caused minimal discomfort. Most importantly, Dr. Ong offers genuine, personal care. His assuring manner immediately calmed my nerves, making the entire experience from consultation to surgery significantly better. Highly recommended for his expertise and deep human empathy.
I’m very grateful to have been under the care of Dr Calvin Ong. He is incredibly caring and approachable, and he explains everything in a clear and thoughtful way. His insights and calm presence helped ease my anxiety a lot. Thank you for taking such good care of me — highly recommended.
I am very grateful for the outstanding care I received from Calvin Ong and his staffs for the past few weeks from the initial diagnosis, the surgery all the way to the follow up consultation post surgery. Dr Calvin is very patient, calm, detailed and professional in explaining the conditions, surgical procedures, recovery time and what to avoid post surgery. His staffs are very helpful and responsive whenever I have questions. Overall, I have a very positive experience and recovering well from the surgery.
Thank God for getting me to having Dr. Calvin Ong to be my doctor. I first met Dr. Calvin, following my usual health screening and was recommended for Endoscopy. Dr. Calvin came across as well recommended by a fellow specialist, as having very good work approach. When i first met Dr. Calvin, his cheery personality immediately put me at ease. Being old-school and not really for going through all these tests, he convinced me quite easily that going for the endoscopy was the logical thing to do. Following the endoscopy - he called me to the clinic to review the results and that's when the bad news hit me. That day, was the only day i felt worried internally, because after that, every step of the way, i felt really blessed having Dr. Calvin explain what we should do and how we should handle my crisis. Following that review, and given his understanding of the trips lined up, Dr. Calvin helped expedite the results and the ops and next steps. We proceeded to do the op at the next immediate hospital slot availability. Cut the long story short, the biopsy was cleared. When Dr. Calvin called me to tell me the good news, i could tell he was really happy for me, i could tell based on his tone over the tone and again his chee he ry personality came through in everything he spoke. Between meeting him from end Sep, to having the endoscopy in a month, followed by the op in a week just this week, Dr. Calvin was very patient in explaining all the scenarios and risks and reassured me more - that i don't think i would have been able to handle it without having him as my Doctor. Sounds cliche but i Strongly Recommend Dr. Calvin Ong many times over if you ever need to consult a colorectal specialist!
Side-by-side with the next three highest-rated digestive & internal medicine providers on KakiList, so you can see how Dr Calvin Ong IBD Clinic stacks up at a glance.
| Provider | Google Rating | Reviews | Years | Verified |
|---|---|---|---|---|
| Dr Calvin Ong IBD Clinic (this page) | ⭐ 5.0 | 87 | — | ✓ |
| Acorn Gastroenterology | ⭐ 5.0 | 1037 | — | ✓ |
| Gleneagles Hospital Gastroenterology | ⭐ 5.0 | 1037 | — | ✓ |
| Parkway East Gastroenterology | ⭐ 5.0 | 296 | — | ✓ |
The fastest way to reach Dr Calvin Ong IBD Clinic is via WhatsApp — tap the WhatsApp button on this page to message them directly. If a phone number is listed you can also call. Most enquiries get a reply within a few hours during business days.
Dr Calvin Ong IBD Clinic provides islandwide coverage, which means they accept jobs across all regions of Singapore — HDB, condo, and landed properties included. Always confirm travel charges upfront if your location is far from their usual base.
Pricing depends on the scope of the job, property type, and urgency. Dr Calvin Ong IBD Clinic will quote after understanding what's needed — usually via a short WhatsApp or phone conversation. Always ask whether the quote includes materials, transport, and GST so you can compare providers on equal terms.
Yes — Dr Calvin Ong IBD Clinic is verified by KakiList. We check each listed business against public Singapore business records before it appears as verified on the site.
Most providers listed on KakiList reply within a few hours on business days. For urgent jobs (burst pipe, lockout, aircon failure), mention that in your first WhatsApp message so Dr Calvin Ong IBD Clinic can prioritise the slot. Non-urgent bookings typically start within 2–5 days depending on current schedule.
If Dr Calvin Ong IBD Clinic isn't the right fit, these are other digestive & internal medicine providers on KakiList worth shortlisting. All are independently listed — no affiliate fees, no "featured" sponsorships.