Depression Psychiatrist in NYC

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By Ryan S. Sultan, MD
Assistant Professor of Clinical Psychiatry, Columbia University Irving Medical Center
Board-Certified in Adult Psychiatry and Child & Adolescent Psychiatry
Published: April 7, 2026

What Depression Actually Is

Depression is not simply sadness. It is a disorder that can alter energy, concentration, motivation, sleep, appetite, self-appraisal, and one's sense of the future. If you are searching for a depression psychiatrist, the question is usually not whether depression is real, but why it has persisted, whether the diagnosis is correct, and what form of treatment is most likely to help now.

As a Columbia University psychiatrist, I evaluate depression not as an isolated symptom, but as a clinical syndrome that often overlaps with ADHD, anxiety, trauma, substance use, and treatment history. In more complex cases, the central task is not merely prescribing another medication, but clarifying the diagnosis, understanding why prior treatment has failed, and designing a plan with greater precision.

Neurobiologically, depression involves disrupted communication between the prefrontal cortex, amygdala, and hippocampus. The amygdala becomes hyperactive, the prefrontal cortex loses its capacity to regulate emotion, and the hippocampus — which literally shrinks with recurrent depression — loses its ability to provide context and memory. The neurotransmitter picture is more complex than "low serotonin": serotonin, norepinephrine, dopamine, glutamate, and neuroinflammatory pathways are all implicated, which is why no single medication works for everyone and why treatment must be individualized.

For a deeper look at the neurobiology, types, and full treatment landscape, see my comprehensive Depression Guide.

When to See a Psychiatrist for Depression

Therapy is the right first step for many people. But psychiatric evaluation is indicated when:

• Symptoms have persisted more than two weeks and are interfering with work, relationships, or basic self-care
• Therapy alone has not produced meaningful improvement after a reasonable trial
• You have tried antidepressants with no response, partial response, or intolerable side effects
• The picture is complicated — substance use, ADHD, a possible bipolar history, trauma, or medical comorbidities
• You are experiencing suicidal thoughts at any frequency or intensity
• Functioning has significantly deteriorated — unable to work, maintain relationships, or care for yourself
• Someone close to you has expressed concern about your mood or behavior

The question isn't whether depression is real. It's why it has persisted, and what to do differently.

Signs Your Depression May Be More Complex

Some presentations require more than a standard antidepressant trial. In my practice, these are the patterns that signal complexity:

• Treatment failure: You have tried two or more antidepressants without achieving remission
• Partial response: Medications help somewhat but you never fully recover between episodes
• Bipolar features: History of elevated periods — high energy, reduced sleep need, increased talkativeness, impulsive decisions — that may have gone unrecognized
• ADHD overlap: Lifelong concentration problems, task initiation difficulty, time blindness, disorganization that predates the depression
• Trauma history: Significant adverse childhood experiences, PTSD, or complex trauma driving the mood picture
• Substance use: Using alcohol, cannabis, or other substances to manage mood — each of which can perpetuate and worsen depression
• Adolescent onset: Depression beginning in teenage years, which has different biology and treatment implications
• Medical comorbidities: Thyroid dysfunction, sleep apnea, chronic pain, or medications that cause depression
• Suicidal ideation or past attempts: Requires specialized safety planning and treatment intensity

Complexity is not a barrier to getting better. It is a reason to get a more thorough evaluation. See the full overview of depression types and presentations.

Treatment-Resistant Depression: Where My Training Matters Most

Approximately 30% of people with major depressive disorder do not respond adequately to standard antidepressant treatment. This is called treatment-resistant depression (TRD), defined as failure to achieve remission after two or more antidepressant trials at adequate dose and duration.

Before accepting a TRD diagnosis, I always ask: Was the diagnosis right to begin with? Many cases of apparent treatment resistance are actually something else entirely:

• Undiagnosed bipolar disorder — antidepressant monotherapy in bipolar depression can cause cycling and apparent resistance
• Undiagnosed ADHD — untreated executive dysfunction drives chronic depression that antidepressants alone cannot fix
• Thyroid dysfunction — even subclinical hypothyroidism impairs antidepressant response
• Sleep apnea — severe sleep disruption produces depression-like symptoms resistant to medication
• Ongoing substance use — alcohol and cannabis directly undermine antidepressant efficacy
• Inadequate prior trials — many "failed" antidepressants were actually underdosed or stopped too soon

I have seen patients labeled treatment-resistant for years who responded rapidly once the correct comorbidity was identified and addressed.

Advanced Treatment Options for True TRD

When TRD is confirmed after thorough re-evaluation, the following options are discussed and recommended as appropriate:

Ketamine and Esketamine (Spravato): Ketamine works through the glutamate system — not serotonin — and can produce antidepressant effects within hours to days, not weeks. I co-authored research on ketamine in the context of ECT during my training at Emory, which connected me to John Krystal, MD, Chair of Psychiatry at Yale and one of the pioneers of ketamine research for mood disorders. Both IV ketamine (off-label) and intranasal esketamine (FDA-approved for TRD as Spravato) are considered for appropriate candidates. Learn more about ketamine for depression.

Transcranial Magnetic Stimulation (TMS): Non-invasive, outpatient neuromodulation targeting the left dorsolateral prefrontal cortex. Standard protocols produce response rates of 50-60% in TRD. Does not require anesthesia; patients can drive to and from sessions. I trained in TMS during my psychiatry residency at Emory University under William McDonald, MD, one of the leading authorities on neuromodulation for depression. More on neuromodulation options.

Electroconvulsive Therapy (ECT): The most effective treatment for severe, treatment-resistant depression, with remission rates of 50-70%. Modern ECT is performed under brief anesthesia with muscle relaxation. I trained extensively in ECT under William McDonald at Emory. For the right patient, ECT is not a last resort — it is a highly effective treatment that is underused due to stigma rather than evidence.

Medication Augmentation: Adding a second agent to a partially effective antidepressant — atypical antipsychotics (aripiprazole, quetiapine, brexpiprazole are all FDA-approved for adjunctive depression treatment), lithium, or thyroid hormone — often produces remission when switching has not.

How I Evaluate Depression

The initial evaluation is 60-90 minutes. This is not a checklist — it is a conversation. The goal is a diagnostic formulation: not just a label, but a clinical explanation of what is happening, why treatment may have failed, and what is most likely to help.

What the evaluation covers:

• Symptom timeline and episode history: When did this start? Has it been continuous or episodic? What triggers worsening or improvement?
• Complete treatment history: Every medication tried, at what dose, for how long, with what response and side effects. Every therapy tried, what type, and for how long. This information is essential — I am not going to recommend repeating a failed approach.
• Comorbidity screening: ADHD, anxiety disorders, bipolar disorder, PTSD, obsessive-compulsive features, and personality structure. Missing a comorbidity is the most common reason depression goes inadequately treated.
• Medical history and relevant labs: Thyroid panel, metabolic panel, vitamin D, B12, CBC. Medical conditions that mimic or perpetuate depression must be ruled out.
• Substance use assessment: Alcohol, cannabis, stimulants, opioids. Asked directly and without judgment.
• Family psychiatric history: Family medication response can predict yours. Family history of bipolar disorder significantly changes diagnostic probability.
• Functional assessment: Impact on work, relationships, and self-care. This determines treatment urgency and intensity.
• Safety evaluation: Suicidal ideation, self-harm, access to means. Asked at every visit, not just the first.

You will leave with a clear diagnostic formulation and a treatment plan that explains the reasoning — not just a prescription.

Evidence-Based Treatments for Depression

Medications

SSRIs (fluoxetine, sertraline, escitalopram, paroxetine) are first-line for most patients. Well-tolerated, effective for comorbid anxiety, safe in overdose. Onset 4-6 weeks. Common side effects: sexual dysfunction, GI disturbance, emotional blunting.

SNRIs (venlafaxine, duloxetine) add norepinephrine to serotonin and are particularly useful for depression with fatigue, chronic pain, or insufficient response to SSRIs. Venlafaxine at higher doses may have modestly higher efficacy for severe depression.

Bupropion (Wellbutrin) is an important option — it works through norepinephrine and dopamine, has no sexual side effects, may reduce weight, and has evidence for both depression and ADHD. For patients with ADHD-depression comorbidity, it often addresses both conditions simultaneously.

Mirtazapine is sedating and appetite-stimulating, making it useful for depression with severe insomnia, poor appetite, and anxiety. The side effect profile that limits some patients is therapeutic in others.

MAOIs (phenelzine, tranylcypromine) are the most effective class for atypical depression — features of increased appetite, hypersomnia, leaden paralysis, and rejection sensitivity. Underused due to dietary restrictions, but transformative in the right patient.

Augmentation strategies for partial responders: atypical antipsychotics (aripiprazole/Abilify, quetiapine/Seroquel XR, brexpiprazole/Rexulti — all FDA-approved as adjuncts), lithium, T3 thyroid hormone. Augmentation is often more effective than switching when there has been partial response.

Psychotherapy

Cognitive Behavioral Therapy (CBT) has the strongest evidence base for depression. It targets cognitive distortions and behavioral avoidance. A typical course is 12-20 sessions. As effective as medication for mild to moderate depression; more effective in combination for moderate to severe.

Interpersonal Therapy (IPT) addresses depression through the lens of grief, role transitions, role disputes, and interpersonal deficits. Particularly effective for depression triggered by loss, relationship difficulties, or major life changes.

Mindfulness-Based Cognitive Therapy (MBCT) has the strongest evidence as a relapse prevention strategy for patients with three or more prior depressive episodes, reducing relapse by approximately 50%.

Lifestyle Interventions I Actually Prescribe

These are evidence-based interventions, not generic advice:

• Exercise: 150 minutes per week of moderate aerobic activity has an antidepressant effect comparable to medication for mild to moderate depression
• Sleep optimization: Consistent sleep-wake times, no screens 60 minutes before bed, no alcohol (disrupts sleep architecture despite feeling sedating)
• Alcohol reduction or cessation: Alcohol is a CNS depressant. I have seen many "treatment-resistant" cases resolve within weeks of alcohol cessation
• Mediterranean diet: Prospective evidence for depression prevention and treatment response

How to Support Someone With Depression

If someone you care about is depressed, here is what actually helps — and what makes it worse.

What Helps

• Presence over advice. You do not need to fix it. Sitting with someone, checking in consistently, and not disappearing when they are hard to reach matters more than anything you say.
• Specific offers, not open invitations. "Let me know if you need anything" is too hard for a depressed person to act on. "I'm coming over Thursday at 7 — I'll bring dinner" is actionable.
• Help with logistics. Making a psychiatry appointment, finding a therapist, getting to a first evaluation — these feel impossible when depression is severe. Offering concrete help with these steps matters.
• Acknowledging what they are experiencing. "That sounds really hard" goes further than any pep talk.

What Makes It Worse

• "Just think positive" or "you have so much to be grateful for" — these are not helpful and can increase shame
• Disappearing when they stop responding — that is exactly when they need to know you are still there
• Pressuring them to "snap out of it" or get better faster
• Minimizing the severity of what they are experiencing

Watch for Escalation

Seek immediate help if the person expresses suicidal thoughts, begins giving away possessions, says goodbye in unusual ways, or shows dramatic changes in behavior. Call 988 (Suicide and Crisis Lifeline), take them to the nearest emergency room, or call 911 if there is immediate risk.

When Depression Becomes an Emergency

If you are not in immediate crisis but are experiencing suicidal thoughts, that warrants same-day or next-day psychiatric evaluation — not a wait-and-see approach. Reach out now.

Why Work With Dr. Ryan Sultan

Frequently Asked Questions

What does a depression psychiatrist do vs. a therapist?

A depression psychiatrist is a medical doctor who can diagnose depression, prescribe and manage medications, evaluate for medical contributors, and identify comorbid conditions like ADHD or bipolar disorder that require a different treatment approach. A therapist provides psychotherapy but cannot prescribe.

For mild to moderate depression, therapy alone may be sufficient. For moderate to severe depression, treatment-resistant cases, or diagnostically complex presentations, a psychiatrist is essential — not just for medications, but for accurate diagnosis. Many people who have seen therapists for years do better once the underlying diagnosis is clarified.

How do I know if I need a psychiatrist, not just a therapist?

See a psychiatrist when: symptoms have persisted two or more weeks and are impairing your functioning; therapy has not produced adequate improvement; you have tried antidepressants with partial or no response; the picture is complicated by ADHD, possible bipolar history, substance use, or trauma; or you are having suicidal thoughts. The more complex the presentation, the more important it is to see someone with full diagnostic and prescribing capability.

What is treatment-resistant depression?

Formally, TRD is defined as failure to respond to two or more antidepressants at adequate dose and duration. Approximately 30% of people with MDD fall into this category. Before concluding TRD, a thorough re-evaluation often identifies missed diagnoses — bipolar disorder, undiagnosed ADHD, thyroid dysfunction — any of which can produce apparent resistance. Options for confirmed TRD include augmentation strategies, ketamine/esketamine, TMS, and ECT.

Can ADHD and depression occur together?

Yes, very commonly. Thirty to fifty percent of adults with ADHD have comorbid depression. The two conditions share overlapping symptoms (poor concentration, low motivation, sleep disruption) and are frequently confused. Untreated ADHD is a potent driver of secondary depression — chronic underperformance, accumulated frustration, and negative self-concept create genuine mood pathology on top of the attention disorder. Treating the ADHD often resolves or significantly improves the depression.

Does Dr. Sultan offer ketamine for depression?

Dr. Sultan consults on ketamine for treatment-resistant depression and has research experience in this area through his collaboration with John Krystal at Yale. Both IV ketamine (off-label) and intranasal esketamine (Spravato, FDA-approved for TRD) are discussed as options for patients who have not responded to standard antidepressant treatment. Ketamine can produce significant mood improvement within hours to days in appropriate candidates.

What should I expect at a first depression evaluation?

The evaluation is 60-90 minutes and covers your current symptoms and timeline, a complete history of prior treatments, screening for comorbid conditions, substance use, medical history, family psychiatric history, functional impact, and safety. You will leave with a diagnostic formulation — a clinical explanation of what is happening and why — and a clear treatment plan. Collaborative decision-making is part of the process; you will understand the reasoning behind every recommendation.

Office Locations & Scheduling

Manhattan Locations

Chelsea Office:
80 Eighth Avenue, Suite 1501
New York, NY 10011
Near 14th Street (A/C/E/L trains)

Columbia University Medical Center:
1051 Riverside Drive
New York, NY 10032
Near 125th Street (1 train)

Scheduling

Available appointment times: Weekday mornings, weekday afternoons, and limited early evening appointments.

Typical wait time: 2-4 weeks for new patient evaluations.

Urgent cases: If you are in crisis, call 988 or go to the nearest emergency room. For urgent psychiatric care, NewYork-Presbyterian Emergency Department is available 24/7.

Related Resources

• Comprehensive Depression Guide — Neurobiology, types of depression, treatment options in depth, and what to expect from a psychiatric evaluation
• Ketamine for Depression — How ketamine works, IV vs. Spravato, candidacy, what to expect
• ADHD Guide — Understanding ADHD and its frequent overlap with depression
• Integrative Psych NYC — The practice where Dr. Sultan sees patients for depression, ADHD, and related conditions
• ADHD Psychiatrist NYC — For patients whose primary concern is ADHD evaluation and treatment
• Cannabis and Mental Health — Research on cannabis and depression, relevant for patients using cannabis to manage mood