Dr. John Nicholas Diana

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This user rated the provider, but did not write a review

Best place to go. Best people to see. Makes you feel like family.

Always good to work with Dr. Diana. Very professional yet easy going.

I am a surgeon and came to see Dr. Diana as a patient. The staff was friendly and despite the busy schedule tried to get me in as timely as possible. Dr. Diana was affable and more than spent enough time with me. He explained his findings, and recommendations with alternatives. I feel confident that Dr. Diana is an excellent surgeon and will trust him with my care.

I had a very good experience with Dr. Diana, he explained everything so I could understand.

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

The physician and their support team took care of my needs from the minute I walked in their office to my departure

Everything about the place is good they do a great job for their patients

Dr. Diana is phenomenal & explains & takes his time with me. I appreciate his honesty & expertise. He’s an amazing doctor & surgeon.

The doctor spent time telling me what to expect. The office staff was very helpful I felt comfortable there. . I’m ready to go in for my 4th joint replacement. The scheduler will call me Monday to schedule my surgery. I’ve heard alot of good things about doctor Diana and I know I’ll be in good hands with him.

I was treated wonderfully from the moment I walked in. Everyone was kind and professional and got me in and out quickly. I feel that I am in such good hands after meeting Dr Diana. I was so caught. Up in discussing the surgery and care that I forgot to ask him if there was more I can do for the pain now. That’s saying something. (Of course I called back to see if he had any suggestions.????)

This was ours 1st visit My mom showed up scared and not knowing what to expect he made her feel very comfortable and Excited for what the future holds Worth of month wait to get an appointment

He explained my up coming operation and recovery time.

Dr. Diana was very professional, courteous and KIND. He listened to my concerns and made me feel I was in great hands. Thanks so much!

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This user rated the provider, but did not write a review

I'm doing quite well, 2 1/2 months post-op on a left knee replacement, and attribute my positive experience to Dr. Diana's "expertise" and the talented and supportive team at Napa Valley Orthopaedic. I'm excited for the adventures that my "new knee", and its stability and mobility, will allow that just wouldn't have happened on the "old knee". Having previously had a hip replacement (also done by Napa Valley Orthopaedic) I'm not particularly looking forward to a third joint replacement, but if that issue pops up, I'm lucky to have the folks at Napa Valley Orthopaedic ready to help ---- onward with rehab! I'm doing quite well, 2 1/2 months post-op on a left knee replacement, and attribute my positive experience to Dr. Diana's "expertise" and the talented and supportive team at Napa Valley Orthopaedic. I'm excited for the adventures that my … More

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

Super friendly and knowledgeable staff led my world-class orthopedic specialists!

From first contact to appointment, the staff is amazing. It was worth the 3 hour drive.

Very compassionate, patient, thorough staff. Dr. Diana was very informative and listened to my concerns and answered all my questions. I was very encouraged after the appointment.

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

Nice place. Dr. Diana is excellent and so is his nurse. Great for the hip injections.

Long waits!

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This user rated the provider, but did not write a review

The staff was very courteous and professional more than willing to go out of their way to help. The radiology department was very good too and so were the physician assistants and the doctor has a good bedside manner

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This user rated the provider, but did not write a review

I had both hips replaced within 3 months of each other. I told Dr. Diana if I had a third hip, I'd be ready to replace that one, too! He and his staff (& all others involved at St. Helena) were wonderful.

Dr. Diana made me very comfortable about my hip surgery. The surgery went very well and I'm already having less pain in my hip. I highly recommend him. Thank you very much Dr. Diana!!! And Merry Christmas!!!

Awesome experience! I instantly felt the Universe manifested the perfect orthopedic surgeon for the condition of arthritis, pain and of total loss of function of the left hip I was experiencing upon meeting Dr. Dianna. That was six months ago. Now, the hip is fully functional! I am pain free. I have images of self practicing yoga to demonstrate the miracle of the full and speedy recovery. Than you Dr. Dianna for your service! Too, appreciation for your wonderful, patient and caring staff.

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

Dr. Diana gave me a partial knee replacement last October and it is the best thing I have ever done for myself. I am back to "normal" when I was sure that I would never walk without pain again. It took me a long time to get the courage for the surgery as I had had previous knee surgery that was not successful. I interviewed three doctors and all were competent and professional. But Dr. Diana was the one that really put me into a comfort zone that I could manage and I am eternally grateful. My other interviews went fine in the allotted 15 minutes each doctor had. Dr. Diana spent as much time as I needed - and it ended up being about 45 minutes - answering all my questions and even bringing up things I hadn't thought of. His team is amazing and supportive and the St. Helena hospital is the nicest, cleanest hospital I've ever been in. They treat you like a person there and not a "patient". The food was even good! A very real added plus of working with Dr. Diana is that you "have" to go to the Napa Valley. Forced to see the beautiful valley, and enjoy the dining and wine tasting made knee replacement take on the feel of a vacation. I was a bit concerned about the distance from the doctor during recovery and it was simply no problem at all. I did my PT back in Marin County and my therapist had open communication with Dr. Diana's office. Now I HAVE to go back for my yearly check up in a few months and I'm looking forward to it. If you're considering joint replacement, I encourage you to make sure Dr. Diana is on your list. Dr. Diana gave me a partial knee replacement last October and it is the best thing I have ever done for myself. I am back to "normal" when I was sure that I would never walk without pain again. It took me a long time to get the courage for … More

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This user rated the provider, but did not write a review

I've been an RN working in CVICU in one of the top 100 hospitals in the USA, in ED,ICU,Cardiac Cath Labs,Telemetry units for the last 23+years. I had to have total hip replacement and Dr. Diana performed this flawlessly in 2013. I would and have recommended he and his office for anyone that needs this proceedure. I was able to go home after the 2nd day but was walking the 1st day. I've worked around MANY physicians and some are quite the Pompous ....sholes but Dr. Diana is just a great guy too

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review

This user rated the provider, but did not write a review