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Dr. Guarionex Decastro, MD

Dr. Guarionex Decastro, MD

Medical Oncology*
20+ years of experience
(212) 235-1519

Dr. Guarionex Decastro, MD is a medical oncologist in New York, NY and has over 20 years of experience in the medical field. Dr. Decastro has extensive experience in Renal Neoplasms & Resection and Urinary System Neoplasms. He graduated from Columbia University Vagelos College of Physicians and Surgeons in 2004. He is affiliated with medical facilities New York-Presbyterian Hospital/Lawrence and Newyork-Presbyterian/Columbia University Medical Center. He is accepting new patients and telehealth appointments.

2.3 Star Rating
Based on 18 reviews 2.3 Star Rating (18 reviews)
(212) 235-1519
Telehealth AvailableAccepting New Patients
161 Fort Washington Ave
New York, NY 10032

Brought to you by and on staff at

Newyork-Presbyterian/Columbia University Medical Center

Locations

Practice

CUIMC/Herbert Irving Pavilion161 Fort Washington Ave New York, NY 10032
1
New Patient?
(212) 235-1519

Practice

NewYork-Presbyterian Allen Hospital5141 Broadway New York, NY 10034
2
New Patient?
(212) 235-1519
ColumbiaDoctors - Midtown51 W 51st St New York, NY 10019
3
New Patient?
(212) 235-1519

At a Glance

  • Area of Expertise • Dr. Decastro specializes in the area of Urology. See board certifications
  • Offers Telehealth • This doctor offers telehealth appointments. Call the office to schedule an appointment.
  • Practices at Top Hospital • America's 250 Best Hospitals Award™ See hospitals

More Oncology Specialists at Practice

Experience Check

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Dr. Decastro's Reviews

Likelihood to recommend Dr. Decastro

2.3
18 ratings, 9 with a written review
5 star
28%
28%
4 star
6%
6%
3 star
0%
0%
2 star
0%
0%
1 star
67%
67%

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ow New Dr Decastro is highly skilled and super intelligent. We met with him 3x in person to discuss my dad’s surgery. He listens well and answers all your questions. He performed a 4 hour laproscopic nephroureterectomy on my 92 1/2 year old dad. yes 93 in June , however, my dad had extensive testing for clearance. The surgery was a success . My dad is still recuperating and did a 4 night stay due to his age. I highly recommend Dr. Decastro
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
Helpful
Valerie – Mar 25, 2025
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Real nice !
I made an appointment with dr. Decastro to get a robotic surgery for my kidney cancer. I Asked so many questions, he answered so nice and gave me detailed answers. Hes the best doctor ive ever seen. 10 out of 10 !!!!
What went well
  • I felt respected
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
1 other person found this helpful
Helpful
Tom kim – May 26, 2024
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Urology visit of 15 minutes. He didn’t do the basic test that shows how well the bladder is emptying. Charged $600.
What went well
No results
What could be improved
  • Appointment was rushed
Helpful
John W. – Feb 28, 2024
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Not a pleasant visit. Condescending and arrogant. Looks at you as if you are dumb when asking straight forward questions and zero empathy towards patients. Stay away if possible.
What went well
No results
What could be improved
  • Office environment
  • Didn't listen or answer questions
  • Staff wasn't friendly
  • Didn't trust the provider's decisions
  • Long wait times
9 others found this helpful
Helpful
Apr 14, 2022
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I happened to make the appointment with Dr. DeCastro before I read the reviews here and was a bit concerned about what my experience would be, but both him and his team were excellent. He listened attentively to what I had to say and explained very clearly the next steps in my course of care. I’ve also seen other good reviews for him so I’d say don’t discount him over a few disgruntled patients.
What went well
  • Office environment
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
6 others found this helpful
Helpful
AV – Nov 13, 2021
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The 1st two respondents (1 star ratings) must have seen an impostor. Dr. Decastro is one of the most compassionate and personable doctors I have ever had. His concern and responsiveness during my three bouts with cancer have been consistently attentive.
What went well
  • Appointment scheduling
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
What could be improved
No results
6 others found this helpful
Helpful
Stephen F. – Oct 03, 2020
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Horrible attitude and bedside manner, won't be going back.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Didn't trust the provider's decisions
5 others found this helpful
Helpful
Aug 09, 2020
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I wouldn't recommend Dr Decastro to anyone, he's arrogant, rude and has the worst bedside manner I've ever experienced.
What went well
No results
What could be improved
  • Didn't listen or answer questions
  • Didn't explain conditions well
  • Appointment was rushed
  • Didn't trust the provider's decisions
6 others found this helpful
Helpful
Michael N – Jul 28, 2020
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I visited Dr. DeCastro more than 40 times since 2012 for treatment of bladder cancer. Annual scopes and pathology show no signs of cancer. He is an excellent urological surgeon specializing in bladder cancer. He takes time to explain condition and treatment plan. Excellent credentials, trustworthy and competent. Went to Sloan for second opinion and would not go back. Very thorough and professional.
What went well
  • Office environment
  • Listened & answered questions
  • Explained conditions well
  • Staff friendliness
  • Appointment wasn't rushed
  • Trusted the provider's decisions
  • Wait times
What could be improved
No results
8 others found this helpful
Helpful
Mar 17, 2019
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About Me

care philosophy

We are committed to delivering the best care and an exceptional patient experience. We are devoted to providing services that are patient-centered and compassionate, and care for you as a person. 

biography

Book Appointment G. Joel DeCastro, MD, MPH, an Assistant Professor of Urology at Columbia University Medical Center. Dr. DeCastro graduated with cum laude honors in Biology from Harvard University in 1997. He then went on to complete his medical...read more

  • Medical Oncology

  • Urology

  • Urologic Oncology

*Healthgrades does not verify qualifications for medical specialties. Please verify your provider's specialty and qualifications directly with your provider and applicable medical board.

  • Overlook Hospital

    Residency Hospital

  • New York Presbyterian Hospital Columbia University Medical Center

    Internship Hospital

  • University Of Chicago Medical Center

    Fellowship Hospital, 2011

  • Columbia University Vagelos College Of Physicians And Surgeons

    Medical School, 2004

  • New York Presbyterian Hospital Columbia University Medical Center

    Residency Hospital, 2004
American Board of Medical Specialties®
American Board of Urology®
- 
Urology
For detailed information about any of the below board actions, please search for the provider's records on the linked state licensing board or the Federation of State Medical Boards. To learn more about the difference between these sources, please refer to our FAQs.
Healthgrades has not received any data indicating a board action exists for this provider.

Healthgrades receives board action history for physicians and physician assistants. The information displayed here is sourced from independent information providers, such as state board websites, and may not be the most up-to-date information. Healthgrades makes no representations with respect to the accuracy of any information provided here and assumes no responsibility or liability for such information.

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Affiliated Hospitals

  • Newyork-Presbyterian/Columbia University Medical Center

    622 W 168th St
    New York, NY 10032
    Recipient of 16
    hospital awards

    America's 250 Best Hospitals Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards

  • New York-Presbyterian Hospital/Lawrence

    55 Palmer Ave
    Bronxville, NY 10708
    Recipient of 16
    hospital awards

    America's 250 Best Hospitals Award™ (2025)

    Top 5% in the nation for consistently delivering clinical quality

    View all awards
Learn more about how Healthgrades measures Hospital Quality