Ketamine Therapy in Vista, CA
Physician-supervised ketamine for treatment-resistant depression, PTSD, anxiety, and chronic pain.
When Nothing Else Has Worked — Ketamine Therapy Might Be the Answer
Depression, anxiety, PTSD, and chronic pain are relentless. They steal your energy, your relationships, your ability to enjoy the life you have built. You have probably tried the standard treatments — antidepressants, therapy, medication after medication — and found that the relief either never came or never lasted long enough to matter.
If that sounds familiar, you are not alone. And you are not out of options.
Ketamine therapy is one of the most significant breakthroughs in mental health and pain medicine in the last fifty years. It works differently from anything you have tried before — targeting different pathways in the brain, producing rapid results, and offering hope to patients who had nearly stopped looking for it.
At Oasis Medical Group in Vista, California, Dr. Kareem Moasis, MD, and his team offers physician-supervised ketamine therapy for patients with treatment-resistant depression, anxiety, PTSD, and chronic pain conditions. The treatment is safe, evidence-based, and conducted entirely under direct medical supervision in a private, comfortable clinical setting.
If you have tried everything else and you are still struggling — this conversation is worth having.
What Is Ketamine Therapy?
Ketamine is a medication that has been used safely in medical settings for over fifty years — originally developed as an anesthetic and approved by the FDA for that use since 1970. Over the past two decades a remarkable body of clinical research has revealed something unexpected — that at sub-anesthetic doses, ketamine produces rapid and powerful antidepressant and analgesic effects that are unlike anything traditional medications can offer.
Ketamine works primarily by blocking NMDA receptors — a type of glutamate receptor in the brain. Glutamate is the brain's most abundant excitatory neurotransmitter and plays a critical role in mood regulation, learning, memory, and pain processing. In patients with depression, PTSD, and chronic pain, the glutamate system becomes dysregulated — contributing to the persistent, treatment-resistant symptoms that conventional medications targeting serotonin and dopamine simply cannot address.
By blocking NMDA receptors, ketamine rapidly resets these dysregulated pathways. It also promotes the growth of new synaptic connections in the prefrontal cortex — a process called synaptogenesis — essentially helping the brain rewire itself in ways associated with improved mood, reduced pain, and greater emotional resilience. This mechanism explains why many patients experience dramatic improvement within hours to days of their first ketamine treatment — a timeline that no traditional antidepressant can come close to matching.
Ketamine therapy at Oasis is administered at carefully calibrated sub-anesthetic doses under the continuous supervision of Dr. Moasis and his team. You remain conscious and aware throughout the session — though you will likely experience a profoundly altered state of consciousness that most patients describe as deeply meaningful and in many cases, transformative.
What Conditions Does Ketamine Therapy Treat?
At Oasis Medical Group ketamine therapy is offered for the following conditions:
Treatment-Resistant Depression
The most well-documented application of ketamine therapy. Defined as depression that has not responded to at least two adequate trials of antidepressant medication. Clinical studies consistently show response rates of 60–70% in treatment-resistant populations — including patients who have failed multiple antidepressants, undergone ECT, and tried every other available option. Ketamine often works when nothing else has.
Major Depressive Disorder with Suicidal Ideation
The FDA approved esketamine — a ketamine derivative — specifically for depression with active suicidal ideation in 2019. Standard ketamine infusions show similarly rapid and powerful anti-suicidal effects, often producing measurable reductions in suicidal thinking within hours of a single infusion. This is one of the most clinically urgent applications of ketamine therapy.
Post-Traumatic Stress Disorder (PTSD)
Growing clinical evidence supports ketamine as a highly effective treatment for PTSD — particularly for patients who have not found adequate relief through EMDR, prolonged exposure therapy, or medications like SSRIs and prazosin. Ketamine appears to facilitate the extinction of traumatic memories and reduce the hypervigilance and emotional reactivity that define PTSD.
Anxiety Disorders
Emerging research supports ketamine for generalized anxiety disorder, social anxiety, and anxiety co-occurring with depression. Many patients report significant reduction in baseline anxiety levels — including physical symptoms like tension, restlessness, and panic — following a ketamine treatment course.
Chronic Pain Conditions
Ketamine's NMDA receptor blocking mechanism makes it particularly effective for chronic pain conditions rooted in central sensitization — where the nervous system has become hypersensitized to pain signals. Conditions that respond well include fibromyalgia, complex regional pain syndrome (CRPS), neuropathic pain, and chronic pain that has not responded to conventional pain management approaches.
Ketamine for Wellness & Longevity
Beyond its clinical applications, ketamine at therapeutic doses has shown promise for reducing neuroinflammation, promoting neuroplasticity, and supporting overall cognitive and emotional wellbeing in patients who are not clinically depressed but who want to optimize their mental performance, resilience, and quality of life.
How Ketamine Therapy Works at Oasis
Step 1 — Comprehensive Ketamine Evaluation
Before any ketamine treatment begins, Dr. Moasis and his team conduct a thorough medical and psychiatric evaluation. He reviews your diagnosis, treatment history, current medications, and overall health to determine whether ketamine is appropriate for you and to identify any contraindications. This evaluation also establishes your baseline so that Dr. Moasis and his team can accurately track your response to treatment.
Step 2 — Treatment Planning
Based on your evaluation, Dr. Moasis and his team designs a personalized ketamine treatment protocol — including the route of administration, dosing, number of sessions, and frequency. A standard initial course for depression and PTSD typically consists of six sessions delivered over two to three weeks. Chronic pain protocols may vary. Every plan is individualized.
Step 3 — Pre-Treatment Preparation
Dr. Moasis and his team provide detailed preparation instructions including dietary guidelines, medication adjustments if necessary, and guidance on setting intentions for your sessions. Many patients find that arriving at their ketamine sessions with a clear intention — a specific aspect of their life or symptoms they want to work on — enhances the therapeutic benefit of the experience.
Step 4 — Ketamine Sessions
Each session takes place in a private, comfortable treatment room at Oasis. Dr. Moasis and his team administers ketamine through the appropriate route for your protocol and monitors you continuously throughout the session. Sessions typically last 45–90 minutes depending on your protocol and response. During the session most patients experience a dissociative state — a feeling of detachment from ordinary reality that many describe as dreamlike, deeply introspective, or profoundly peaceful. You remain conscious and able to communicate with Dr. Moasis and his team throughout. Music, an eye mask, and a comfortable environment are provided to support a positive therapeutic experience.
Step 5 — Integration
What happens after a ketamine session is just as important as what happens during it. Dr. Moasis and his team discuss integration — the process of making meaning from your experience and applying the insights to your daily life and recovery. Integration conversations happen at every follow-up visit and are a core part of the therapeutic process at Oasis.
Step 6 — Response Assessment & Maintenance
After your initial treatment course Dr. Moasis and his team conduct a comprehensive response assessment. Most patients who respond to ketamine experience significant improvement within the first series of treatments. For patients who benefit, maintenance sessions — typically monthly or as needed — help sustain and deepen the response over time.
What Does Ketamine Feel Like?
This is one of the most common questions patients ask before their first session — and it deserves an honest, thorough answer.
Ketamine at therapeutic doses produces a dissociative effect — a temporary alteration in perception, sense of self, and relationship to time and space. Most patients describe the experience as profoundly different from anything they have encountered before. Common descriptions include:
- ✓A feeling of floating or weightlessness
- ✓Visual and perceptual changes — colors may appear more vivid, patterns may emerge
- ✓A sense of being an observer of your own thoughts and feelings rather than being consumed by them
- ✓Deep introspection and access to emotions or memories that normally feel out of reach
- ✓A dissolution of the rigid thought patterns and self-narratives that often perpetuate depression and anxiety
- ✓Profound peace, warmth, or a sense of connection
The experience is temporary — it lasts the duration of the session and resolves completely as the medication clears your system. You will not drive yourself home after a ketamine session — we require all patients to arrange transportation. Most patients feel rested and reflective in the hours following a session and notice mood improvements beginning within 24–48 hours.
It is important to note that the psychedelic-like qualities of ketamine are not incidental to its therapeutic effect — they are part of it. The altered state facilitates neural plasticity and allows patients to access and process emotions, memories, and beliefs that are otherwise inaccessible. Working with the experience rather than resisting it tends to produce significantly better outcomes.
Dr. Moasis and his team prepares every patient thoroughly for what to expect so that you can approach your session with confidence rather than anxiety.
Ketamine Therapy vs Traditional Antidepressants
Understanding how ketamine differs from conventional treatments helps patients make informed decisions about whether it is right for them.
Speed of Action
Traditional Antidepressants
Traditional antidepressants take 4–8 weeks to produce meaningful effects — if they work at all.
Ketamine Therapy
Ketamine often produces measurable mood improvement within hours to days of the first session. For patients in acute distress or with suicidal ideation, this rapid action can be life-saving.
Mechanism
Traditional Antidepressants
SSRIs and SNRIs target the serotonin and dopamine systems.
Ketamine Therapy
Ketamine targets the glutamate system — a completely different pathway that remains active even when serotonin-based treatments have failed. This is why ketamine works for patients who have not responded to antidepressants.
Duration of Treatment
Traditional Antidepressants
Antidepressants require daily medication indefinitely.
Ketamine Therapy
A ketamine treatment course is time-limited — typically six initial sessions followed by maintenance as needed. Many patients sustain their improvement for months between maintenance sessions.
Side Effects
Traditional Antidepressants
Antidepressants carry systemic side effects including weight gain, sexual dysfunction, emotional blunting, and cognitive effects.
Ketamine Therapy
Ketamine's side effects are limited to the session itself — temporary dissociation and perceptual changes that resolve completely as the medication clears. There are no ongoing systemic side effects between sessions.
Efficacy in Treatment-Resistant Cases
Traditional Antidepressants
In patients who have failed two or more antidepressant trials, the probability of responding to another antidepressant drops significantly with each failed trial.
Ketamine Therapy
Ketamine response rates of 60–70% in this same population represent a dramatic and meaningful difference.
Why Choose Oasis Medical Group for Ketamine Therapy in Vista
Physician-Supervised Every Session
Ketamine therapy at Oasis is not delegated or outsourced. Dr. Moasis and his team personally supervises every session from administration through completion. Your safety, your comfort, and your therapeutic experience are his direct responsibility throughout.
Individualized Protocols
There is no one-size-fits-all approach to ketamine therapy at Oasis. Dr. Moasis and his team designs your protocol specifically for your diagnosis, your medical history, your previous treatment experience, and your therapeutic goals. Your ketamine treatment is as individual as you are.
Integration Support
Many ketamine providers administer the medication and send patients home. Dr. Moasis and his team integrates therapeutic support into the ketamine program at Oasis — helping patients process their experiences and translate insights into lasting change.
Full-Spectrum Mental Health & Medical Care
Because Oasis is a comprehensive internal medicine and behavioral health practice, your ketamine therapy is seamlessly integrated with your overall care. If you are also working on medication management, TMS therapy, MAT treatment, or primary care — everything is coordinated by the same physician who knows your full picture.
Private & Confidential
Your ketamine treatment at Oasis is completely private. Sessions are conducted in a dedicated private treatment room and your care is handled with full HIPAA confidentiality. Nobody needs to know unless you choose to tell them.
Convenient Vista Location — Serving Encinitas, Fallbrook, and North County San Diego
Located at 906 Sycamore Ave, Suite 201 in Vista — easily accessible from Oceanside, Carlsbad, San Marcos, Escondido, Encinitas, Fallbrook, and across North County San Diego.
What to Expect at Your Ketamine Consultation
Your ketamine consultation with Dr. Moasis and his team runs approximately 45–60 minutes. He will review your mental health or pain history, previous treatments, current medications, and overall health to determine whether ketamine is appropriate for you and to design your treatment protocol.
Come prepared with:
- A list of psychiatric medications and treatments you have previously tried
- Your current medication list and dosages
- Any previous mental health or pain management records
- Your insurance information
- Your questions — there are no wrong ones
By the end of your consultation you will know exactly whether ketamine is right for you, what your treatment protocol will look like, what to expect during sessions, and what the costs and insurance coverage look like. Dr. Moasis and his team will give you a completely honest assessment — if ketamine is not the right fit for your situation, he will tell you that too and discuss what alternatives make more sense.
Insurance and Payment for Ketamine Therapy
Ketamine therapy for mental health conditions is currently considered an off-label treatment by most insurance carriers, which means coverage varies significantly by plan. Dr. Moasis and his team will verify your specific insurance benefits before your first session.
Insurance Coverage
Some PPO plans and Medicare Advantage plans provide partial coverage for ketamine therapy — particularly when medical necessity is well-documented. Our team will work with you to maximize any available benefits.
Cash-Pay Options
Transparent cash-pay pricing is available for all ketamine services. Call 760-691-1901 for current session pricing and package rates. We believe that cost should not be the barrier between a patient and a treatment that could change their life.
Frequently Asked Questions
Yes. When administered by a physician at appropriate therapeutic doses in a monitored clinical setting, ketamine has an excellent safety profile. It has been used safely in medical settings for over fifty years. Dr. Moasis and his team monitor every session continuously and is fully equipped to manage any adverse response. Serious complications are extremely rare in properly screened and monitored patients.
No. Therapeutic ketamine is administered at sub-anesthetic doses — meaning you remain conscious and aware throughout the session. You will be in an altered state of consciousness but you can communicate with Dr. Moasis and his team at any time during your session.
Many patients report meaningful mood improvements within 24–48 hours of their first or second session. The full therapeutic benefit typically develops over the course of the initial six-session series. Chronic pain patients may notice gradual pain reduction developing over the treatment course.
In most cases yes — ketamine can be combined with many existing medications. Dr. Moasis and his team will review your current medications during your consultation and make specific recommendations. Some medications may require adjustment before beginning ketamine treatment.
Response duration varies by individual. Many patients sustain significant improvement for three to six months following an initial treatment course. Maintenance sessions — typically monthly or quarterly — help sustain and deepen the benefit over time.
At the low therapeutic doses used in clinical ketamine therapy, addiction is not a significant risk for most patients. Dr. Moasis and his team screens all patients carefully for risk factors and monitors the treatment course closely. Ketamine therapy is not appropriate for patients with a history of ketamine misuse or certain other substance use disorders.
Yes — and this combination is increasingly recognized as particularly effective for treatment-resistant depression. Dr. Moasis and his team can discuss whether a combined TMS and ketamine approach makes sense for your situation.
Ready to Explore Whether Ketamine Therapy Is Right for You?
Same-day consultations available. Physician-supervised ketamine therapy in Vista, CA — private, safe, and evidence-based.
- 906 Sycamore Ave, Suite 201, Vista, CA 92081
- Monday–Friday 8:30 AM–5:00 PM