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Phone: 800-275-6401
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To schedule an appointment

Providers call:1.800.332.8901
Patients call:1.800.275.6401

This provider sees patients at the following locations:

Family Practice Kingston West
499 Wyoming Avenue
Kingston, PA 18704
Riverstreet Manor Nursing Home Wilkes Barre
440 N River Street
Wilkes Barre, PA 18702

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 40 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.

Kosek, Gunnar Francis, DO Visit for information on Gunnar Francis Kosek, DO. Find contact information, medical education, affiliated hospitals and more.
Overall Rating:
4.7 out of 5
1 212 ratings

Practicing Specialties:

  • Family Medicine, Board Certified, 1997
  • Primary Care


  • Philadelphia College of Osteopathic Medicine 1994


  • Wyoming Valley Family Medicine Residency 1997

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
- 4.8 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
- 4.8 out of 5
8. Time provider spent with patient
- 4.7 out of 5
9. Patients' confidence in provider
- 4.7 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 >
Dec 23, 2015
Dr Kossack was great, it was my first vist with him and I feel very good about our future appt
Dec 21, 2015
Enjoyed this doctor very much. Very easy to communicate with.
Dec 17, 2015
I enjoy my visits with Dr Kosek he understands my problem
Dec 14, 2015
Dr. Did seem concerned but he said to call if no improvement in a few days- I never got a response from his office, call said to expect 24-48 hours, got a call from pulmonologist office for appt that was scheduled 2 weeks off- very disappointing when- am I now expected to go to urgent care?
Dec 10, 2015
This was my first visit to Dr. Kosek. I plan on continuing to see him.
Dec 8, 2015
This was my first encounter with Dr. Kosek, and I left instilled with a feeling of great confidence.
Dec 1, 2015
I have been patient of Dr. Kosek for years and he is the best. Very understanding and helpful. Really cares for person as a person.
Nov 16, 2015
Dr Kosek has been my parents doctor for years & I also enlisted him as my primary doctor - very caring & compassionate, never rushes you & treats you like you were his only patient there. would recommend him 100% and already have numerous times.
Oct 28, 2015
I have a lot of confidence in Dr. Kosek. He explains problems so they are easily understood and makes you feel comfortable about your care.
Oct 27, 2015
After waiting on hold for 8 minutes, sitting in the waiting room for 45 minutes, and waiting for the doctor, I spent about 5 minutes with the doctor, just to get a referral.
Oct 20, 2015
Honest, respectful, and showed diligence for my concerns.
Oct 14, 2015
I have always had a positive experience with Dr. Kosek.
Oct 5, 2015
*Dr. Kosek is an asset to the Geisinger Group excellent.
Oct 1, 2015
I forgot to inform the doctor of a health concern and to ask a question or two. It will take time to update him on all my health issues.
Sep 25, 2015
I am still waiting for a referral to a neuropsychologist
Sep 24, 2015
I already have recommended this dr. He didn't make me feel rushed, he explained everything and didn't just address one issue.
Sep 17, 2015
a great Doctor
Sep 1, 2015
So far a very pleasant experience.
Aug 27, 2015
*Dr. Kosek. Is a very good dr. who cares about his pt. If only he had HIS office I would be so happy.
Aug 27, 2015
*Dr. Gunnar Kosek is a fabulous doctor.
Aug 26, 2015
*Dr. Kaleb makes me feel at ease.
Aug 7, 2015
Doctor was thorough and informative about a medical concern I had with my son.
Aug 6, 2015
down to earth, informative
Aug 1, 2015
The staff at Kingston GMG have always been vreat. We are so lucky to have such great medical staff at our medical facility.
Jul 31, 2015
Dr. Gunner Kosek is EXCELLENT !
Jul 31, 2015
This was yearly physical examine, Care Provider did not check the prostate, did not check stomach area for internal growths, did not do test on eyes to follow the light. He did check heart, blood pressure, breathing.
Jul 29, 2015
Waiting room (too hot) no protection from sun.
Jul 28, 2015
*Dr. Kosek is an excellent physician. Very professional.
June 24, 2015
Very long wait time for an afternoon appointment.
June 23, 2015
Dr. Kosek is a very caring & thoughtful dr. I have recommended him to others. Very thorough.
June 16, 2015
This survey should include NON-APPLICABLE option.
June 15, 2015
Would recommend Dr, but trying to see your Dr, not so good. They need to stop taking new patients, they can't handle it
June 4, 2015
My first time meeting Dr. Kosek. He immediately recognized my issue. Had me call family members and I was sent via ambulance to hospital. This has put me in a position to get continued care for my issue.
June 3, 2015
dr spent time talking about a medication prescribed at office visit but never sent it to local pharmacy. instead, sent it to mail order. also I reviewed with her my mail order for a recurring daily prescription that needed, per the mail order pharmacy, specific written instruction brand specific and be faxed to the mail order. did not happen. I had to take time off again from work the next day to get this resolved.
May 29, 2015
Good experience Dr was excellent
May 22, 2015
Not only did dr Kosek provide information on the medication he was giving me, he also recommended some other things I can try to help solve my issue.
May 8, 2015
My doctor ,Dr. Kosek, is very friendly and thorough. He explains options and listens well. I would highly reccomend his services to anyone.
May 6, 2015
I'm so glad Dr. Kosek is in the office more. He really listens to what I tell him, and makes sure to tell me to call or e-mail if there's a problem. Also gets me involved to help myself.
May 6, 2015
Dr. Kosek is the best - Always concerned & never rushes us out of office - My parents had & have him as their doctor, now me, my husband & my sons took him on.
May 4, 2015
Very easy to talk to!
Apr 30, 2015
Dr Kosek is awesome. Always concerned and easy to communicate with.
Apr 29, 2015
We are still early in our trust building because I have only been with him a few months, but his compassion and care and understanding is remarkable, I am sure I will become more confident as I continue to see him. He helped me out through some emotional difficulties. Very helpful.
Apr 28, 2015
I just wish my provider would exercise more power in getting major testing performed. To ask me to have a test done and them find out it's 60 days out is unacceptable and given certain serious symptoms, I would hope that my provider/office could get things scheduled much sooner
Apr 20, 2015
Dr. Kosek provided explainations that are easily understood. He provided answers to questions I had and thoroughly explained the possibiliy for a plan B if my symptoms did not improve. He is very reassuring and has my full trust.
Apr 16, 2015
very good
Apr 6, 2015
I wasn't even done describing what was wrong, and he was trying to diagnose me.
Apr 6, 2015
Dr. Kosek always explains everything in words I can understand. He will always take time to answer any of my questions and explain all treatment options.
March 27, 2015
I'm very happy with my doctor & his staff. Everyone is very nice & concerned & patient & accommodating.
March 24, 2015
He really listen to my concerns and has helped me greatly!
March 6, 2015
best doctor I have ever had
March 5, 2015
Dr. Kosek is an excellent doctor that I trust. He-is the reason I put up with the ILL RUN, ILL MANNERED staff in registration area. I've waited 10 to 15 minutes just to check in for my appointment.
Feb 23, 2015
Response to "My Geisinger" inquiring could be more timely. During the Nov. and Dec. 2014 timeframe, I waited over 6 weeks to get a response from the doctor via My Geisinger.
Feb 9, 2015