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Upland, CA

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Klarity Clinic

5.0 (48 reviews)
Closed • 8:00 am - 8:00 pm

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Refreshment station
Anna D.

If you're looking for a provider that is kind, supportive, calm, and dedicated to helping his patients, look no farther than Dr. Tang. He really wants to help folks feel better and increase the quality of their lives. The location is great - there are wide chairs in the waiting room, and private patient rooms for infusions. Each patient room has a recliner (or one lay flat bed, with many position options) and has eye masks, headphones, and big screens for helping pass the time. Would highly recommend Dr. Tang and the Klarity clinic as a safe space for folks to come for healing.

Chris A.

Mental health is an important part of overall health but is unfortunately misunderstood. Sadly, I have been putting my mental health on the back burner and felt like an empty vessel for a while now. I have always looked into IV ketamine therapy to help treat anxiety and depression but never had the opportunity until recently. I found Dr. Devin Tang while doing some online research and spoke to him on the phone regarding my personal and mental health. He seemed like a genuine, upstanding, professional doctor who really cares about his patients. He told me that he started the clinic because he really enjoyed seeing the patient outcomes and started the clinic for that purpose of helping others (for the first several months, there really is no income because you invest more time and money than anything). I pulled the trigger and made an appointment for my first IV ketamine infusion session. Dr. Tang really treated me well and took the time to really understand what brought me down this path. After the first three sessions, I felt like my normal, quirky self and found myself laughing at stupid videos and cracking jokes. I have even found the energy to wake up in the mornings to work out which I haven't done in years. The difference of ketamine therapy is almost night and day, especially in combination with cognitive behavioral therapy. For follow-up appointments, Dr. Tang very flexible with his schedule. I highly recommend Dr. Tang and the Klarity Clinic for mental health needs and treatments.

Jon Hopkins - Music for psychedelic therapy
Justin C.

Dr. Tang and his staff are the pinnacle of care. I can not recommend The Klarity clinic enough to friends and family. After suffering from horrible insomnia, chronic depression for nearly 20 years. And dealing with medical trauma/NDE PTSD for 3 years I exhausted all conventional routes, I truly believed things were hopeless. I could not have been more wrong, 6 treatments with Dr. Tang has changed my life. I do not remember ever feeling this good, sleeping so well, clear minded, amazing memory, drive to participate in life. Honestly these treatments have changed my life and I'm so grateful for a new beginning. If you are stuck and think you can't find your way out try Klarity. The treatments can be challenging but the after effects and clarity has been magic for me. Thank you Dr. Tang! Also some pro advice: 1) Be sure to complete all 6 treatments, if possible in a 2 week period. 2) Fast 12 hours before treatment. 3) Receive treatments with clear intentions in mind. 4) Make sure eyes are closed and sleep mask fits well blocking out all external stimuli. 5) Choose great music, I recommend Jon Hopkins - Music for psychedelic therapy. Honestly this album was missing ingredient. LINK: https://youtube.com/playlist?list=PLWt_gYfbC9Vbbt8AsJtlgsjV0H9Vmhrbk * I wish I used this album for every treatment it makes for the most beautiful transformative experience. 6) Relax and LET GO of EVERYTHING you are in great hands. 7) Finally don't get too obsessed with interpreting the physical treatment experience it can be bizarre, scary, challenging and beautiful. The reward is not while you are in the clinic, it's the life waiting for YOU after treatments completion. Good luck and I wish you the best, you got this! Jay C

Remarkable.  I am healed (i feel excellent. whole. complete). Thank you prime creator GOD.  * Mrs. Roxy Lara 10.10.2022
David L.

(10 stars) Absolutely remarkable therapeutic healing experience. I am healed (i feel excellent. whole. complete). Thanking GOD for leading me to Ketamine treatment & this KlarityClinic.com healing source; we are in gratitude to Dr. Tang & nurse Veronica. Best, Roxy Lara Testimony shared by my loving wife. RoxyLara.com 10.10.2022

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2 months ago

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3 months ago

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Devin T.

Thank you for sharing your experience! Glad we were able to help!

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2 months ago

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Devin T.

Thank you for your review- Thank you for trusting us with your care!

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3 months ago

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Devin T.

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2 months ago

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Devin T.

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4 months ago

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Devin T.

Thank you for the review! You have been awesome to work with!

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10 months ago

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Devin T.

Thank you for your positive words!

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1 year ago

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Devin T.

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9 months ago

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Devin T.

Thank you! Glad you finally made the decision to give us a try!

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2 years ago

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Devin T.

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2 years ago

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Devin T.

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6 years ago

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1 year ago

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Devin T.

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4 years ago

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Devin T.

Thank you for your kind words. It was a pleasure working with you.

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1 year ago

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Devin T.

Thank you for your kind words! Glad that we could help!

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2 years ago

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4 years ago

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Devin T.

Thank you for sharing your testimony!

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6 years ago

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3 years ago

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3 years ago

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Devin T.

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5 years ago

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Devin T.

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5 years ago

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Devin T.

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3 years ago

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Devin T.

Fantastic! It was a pleasure to work with you!

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5 years ago

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Devin T.

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2 years ago

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Devin T.

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4 years ago

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Devin T.

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5 years ago

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Devin T.

Thank you for your kind words. I'm glad that I've been able to help.

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2 years ago

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Devin T.

Thank you very much for your kind review. Glad we are able to help.

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3 years ago

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Devin T.

Thank you for your kind words. Thank you for allowing us to help.

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4 years ago

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Devin T.

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2 years ago

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Devin T.

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4 years ago

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Devin T.

Thank you for your kind review and allowing us to apart of your care.

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5 years ago

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Ask the Community - Klarity Clinic

Review Highlights - Klarity Clinic

“Tang consistently brings a positive, professional demeanor with helpful insights which I very much appreciated.”

Mentioned in 43 reviews

Read more highlights

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4.3(16 reviews)
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The type and quality of care is spot on…read more Thank you doctor and staff.

First off, I'm not one to leave a review because I believe the service you get speaks for itself…read more Being a health care professional myself for over 40+years working in the field from level of care to supervisory gives me a great amount of experience to provide a through review. First the office staff are very professional and accommodating, next the clinic staff who takes your vitals are professional and ensure they use universal precautions to ensure there are no cross contamination from patient to patient. This is a biggie for me when it comes to doctor offices. Last, Dr. Rishi Majithia. This is my fourth appointment seeing him. I was recommended to him by my daughter in law who is a medical professional. I was initially very skeptical because doctors now days care more about money than the care they provide. Dr. Majithia, my first appointment he listened to my complaints and concerns, gave his feed back, made slight recommendations and genuinely seem as if he cared. By my second appointment he actually was able to repeat some of the concerns from the previous appt and made excellent recommendation. This let me know he actually was listening and taking appropriate notes the first appointment. By my third appointment he addressed all my medical concerns, started me on new meds which we both agreed, made legitimate realistic goals for me to follow and seemed as if he really cared about my well being. Again he was able to recite all my previous complaints from the past appointments. ((He really Listens). Today, I had my fourth appt. I can now say I have found a provider who is knowledgeable, competent, up to date with society and current medical trends. Knowledgeable of Diabetes, and is genuinely concerned about his patients. Seems he has a passion for his profession. When he took his Oath to be a doctor to care for patients he did it because he wanted to see a change in people and he care about people's health. If your looking for a doctor who cares about his patient's, current on medical knowledge, doesn't rush you during appointments, listens, there is no need to go further. Dr. Rishi Majithia is an excellent choice!

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Foothills Pain Management Clinic - Best Pain Mgmt.offfice.

Foothills Pain Management Clinic

3.2(29 reviews)
3.7 mi

I have been a patient of Dr Metha for 18 months. Always professional and kind…read more I recently had a crisis that the Dr caught before it occurred saving me must trouble. I have an internal medication pump. He had been monitoring and was able to set up replacement before the alarm went off and my medication stopped. Extra special treatment always with this man. I can with a open heart recommend him. Peter

There were signs all over the office asking that patients review their office on Yelp, which makes…read moreme think they believe they are doing something right. So, here is my honest feedback and review. It was nearly impossible to get an appointment. After weeks of calling and leaving messages my primary physician called and asked why I hadn't been seen. I let them know that I had left several messages with no return phone call. It was only after they reached out that I got an appointment, however, it wasn't directly with Foothills Pain Management...my doctor literally stayed on the line so that they could facilitate the appointment. I went to my appointment and upon arriving, neither person at the reception desk bothered to even acknowledge my presence. I said "excuse me" and was met with a raised hand. I signed in and sat down. The initial appointment was fine and a treatment plan with injections in both my hip and lower back were decided upon. I returned at my appointment time. Again, I found the front office staff to be incredibly dismissive and rude. I was brought back to the initial exam room at which point the nurse got out a hep lock for an IV. I asked what it was for and she said it was for the sedation. I told her that I was pretty sure I wasn't supposed to be sedated for my procedure and even mentioned that it mentioned on my paperwork (which she now had) that I didn't need a driver after my procedure. She said I needed to save all of my questions for the doctor and placed the needle in my arm. I went to the room for the procedure and the doctor immediately mentioned that I was not to be sedated. I had a hep lock in my arm for absolutely no reason...and it was left there. The injection in the hip was extremely painful and I did yelp upon placement. I was told to be quite as there were other patients in the office. I expected the second injection to be given and was told that would be a separate appointment, though I understood that both would be done the same day. I was taken to a waiting area and only then was the unnecessary IV line taken out. The nurse that took it out was incredibly apologetic, but no one else seem concerned. While I was in the waiting room, I heard one nurse talk to the one that placed my IV about the "patient she accidentally put the IV in" and how that couldn't happen again due to the liability. I was told that I could leave and that I needed to make an additional appointment (with an additional co-pay) for my other injection. I expected a call from their office apologizing for the issue, but never heard from them. In fact, I placed additional calls to follow up and see what options were moving forward, however, I never heard from them...at all. If you have a choice, please don't go to this facility. My experienced sucked and was honestly a bit traumatic, as I was made to feel like I did something wrong, despite being the patient. It is crazy to me that they never followed up with me and didn't bother to return calls even though my treatment plan called for multiple injections in two different locations. There seemed to be a lack of caring in the office and I still wonder if I shouldn't have pushed the issue of their incompetence or filed a report at the time services were rendered.

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James Nassiri, MD, MA

James Nassiri, MD, MA

5.0(3 reviews)
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Total 5 stars for this doctor and his amazing, professional staff…read more After a horrific experience with another local pain management, I found Dr. Nassiri. I was having excruciating back pain (while sitting, an 8/10 pain) and every pain killer prescribed to me to date was doing nothing to help. 1. His office is clean and easily accessible. At this point, I was in a wheelchair. The other pain management dr I was seeing was barely accessible. 2. Dr. Nassiri is very friendly and knowledgeable. He has a medical scribe document conversations to ensure accuracy. He reviewed my MRI and his assessment was exactly what I had heard from other doctors and he spent a lot of time answering all questions I had. 3. I was very unhappy with the orthopedic doctor I was seeing. He recommended a world class orthopedic surgeon, who I went to and had perform my surgery (L4/L5 microdiscectomy). 4. He and his team answer emails quickly! No need to call in. 5. While he was talking about this great doctor, his front desk person overhead this portion and when I walkld out the door, she had a document printed with contact details and other info I needed. 6. He put me on a specific regiment that WORKED (with gapapentin). Within 2 weeks, I could walk and the pain got down to levels where I could sleep. I then foolishly tried to reduce them and a lot of pain came back. That was my bad. Listen to him and follow the regiment. I had surgery in August 2023 (Thank you, Dr. Sodha!!) and am PAIN FREE (maybe a 1/10 at my worst). I really credit Dr. Nassiri and his fantastic staff with getting the best medical care available.

The whole team is very friendly and professional. I am…read moreextremely pleased with the service and treatment. The front office staff is welcoming and comforting, they listened to my needs. Thank you for the amazing service. I highly recommend this place!

Klarity Clinic - painmanagement - Updated October 2026

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