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Phone: 800-275-6401
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Providers call:1-800-332-8901
Patients call:1-800-275-6401

This provider sees patients at the following locations:

Hematology Oncology Knapper Clinic Danville
100 N Academy Ave
Danville, PA 17822

There is no publicly available rating for this care provider for one or more of the following reasons:
  1. He or she does not see patients in the outpatient clinic setting.
  2. He or she sees patients, but has not yet received the minimum number of Patient Satisfaction Reviews. To be eligible for display, we require a minimum of 30 surveys. This ensures that the rating is accurate and statistically reliable.
  3. He or she is a community provider, not a Geisinger-employed provider. Community providers tend to see patients in their own private outpatient practices, which we do not survey.

Vadakara, Joseph J. L., MD Visit for information on Joseph J. L. Vadakara, MD. Find contact information, medical education, affiliated hospitals and more.
Overall Rating:
4.6 out of 5
1 152 ratings

Practicing Specialties:

  • Hematology, Board Certified, 2013
  • Medical Oncology, Board Certified, 2013
  • Cancer


  • Medical College-Thiruvananthapuram-U. of Kerala 2002


  • Hahnemann University Hospital 2009


  • Fox Chase Cancer Center 2013

Clinical Interests:

Dr. Vadakara specializes in treating solid tumors, hematologic malignancies and benign hematology.

Professional Memberships:

  • American College of Physicians
  • American Society of Clinical Oncology

Patient Satisfaction Ratings:

The Patient Satisfaction Rating is an average of all responses to care provider-related questions on our nationally recognized Press Ganey Patient Satisfaction Survey. Responses are measured on a scale of 1 to 5, with 5 being the best score. Learn more about our survey >
1. Friendliness/courtesy of provider
- 4.7 out of 5
2. Provider explanations of prob/condition
- 4.7 out of 5
3. Provider concern for questions/worries
- 4.7 out of 5
4. Provider efforts to include in decisions
- 4.7 out of 5
5. Provider information about medications
- 4.7 out of 5
6. Provider instructions for follow-up care
- 4.6 out of 5
7. Provider spoke using clear language
- 4.7 out of 5
8. Time provider spent with patient
- 4.5 out of 5
9. Patients' confidence in provider
- 4.6 out of 5
10. Likelihood of recommending provider
- 4.6 out of 5

Patient Comments:

The comments are submitted by patients (or their caregivers) and reflect their views and opinions. The comments are not endorsed by and do not necessarily reflect the views of Geisinger. Learn more about our survey >
Sep 1
I liked Dr. Vadakara a lot. He is my 4th hematologist @ GMC - ALL EXCELLENT! So - Thank you!#7. And - - - never talked "down" to me!
Sep 1
He is very caring! Excellent!
Aug 29
Aug 19
Dr. Vadakara and the Nurse that gave me the shots gave me very good information.
Aug 5
For question #5, 6 this is N/A. For #8, it was the end of the day and I was the last patient or I believe he would have taken more time to explain and discuss my situation. For #9 & 10 I had just a brief time with Dr. Vadakara. I really can't form a well-informed decision at this time.
Aug 5
The Dr. seemed in a hurry, since he was 40 minutes late with me I can understand why.
Aug 4
Dr. Vadakara is the best! Geisinger is lucky to have such a good doctor.
Aug 1
I was concerned at first, my other dr. left & I got assigned to Dr. Vadakara and I am happy with what care & extent of explaining he does.
Aug 1
Dr. Vadakara is consistently willing to answer my questions, which can be convoluted at times. He called me with a response to an online message I sent, which I appreciated.
Jul 8
#5. No medication.#6. No follow-up.
June 28
He was very good, but the most complex parts of the bloodwork were not ready until a few days later, so I was left with questions. It might be good to have bloodwork scheduled a few days earlier than the appointment, so patient can discuss with doctor.
May 25
No meds as yet.
May 5
HE is very, very, very GOOD, ONE OF my BEST DRS.
Apr 26
I always get good care.
March 18
It was the first time I met my new doctor and I couldn't have been more happy with his explanations care and concern for me.
March 18
I would recommend Dr Vagakara to anyone.
March 1
He did not even know where my cancer had been, and proceeded to ask me your cancer was in your neck right. No sir it was on my lung, i did not think i should have been asked that question He was the doctor and should have known that.....
Feb 25
Since CLL does not have a cure at this point - it is very difficult to stay positive and feel sure about information given to me.
Jan 12
My Wife and I am very comfortable with Dr. Vadakara.
Jan 8
He listened to me & attended me very good. He explained everything.
Nov 11, 2015
Dr. Vadakara took time w/me as a new patient. He visually reviewed my scans to help me understand. #5. Future chemo.
Nov 6, 2015
My first appointment with Dr. Vadakara. I was very much impressed by his professionalism and attention to detail.
Nov 5, 2015
Very though