
Founder
Dr. Ryan Sultan
- Assistant Professor of Clinical Psychiatry, Columbia University Irving Medical Center
- Attending Clinician, NewYork-Presbyterian
- Director, Sultan Lab for Mental Health Informatics
- Medical Director, Integrative Psychiatry of Manhattan
- Member, Columbia Data Science Institute
- FDA Consultant
Dr. Sultan is double board-certified in Adult and Child & Adolescent Psychiatry. After an NIMH T32 fellowship in pharmacoepidemiology, he is in the NIDA K12 program, training in clinical natural language processing and machine learning.
His research has shaped how clinicians practice in the real world, including work that informed changes to the U.S. clozapine REMS program and invited editorials in JAMA Psychiatry on ADHD medication and outcomes. His work on psychopharmacology has been cited across major national outlets.
At Columbia, Dr. Sultan directs the Sultan Lab for Mental Health Informatics and leads a ten-clinician outpatient practice. He sees patients there every week, and the same team uses what they learn in clinic to build and refine Sigmund. Their chart data spans more than a thousand patients followed over time.
Sigmund grew out of that clinic, built by the clinicians and researchers who use it in their own workflow every day.
Origin
Why I built Sigmund
I see somewhere around eighteen outpatient visits in a clinic day. Eighteen mental status exams. Eighteen risk assessments. Eighteen medication decisions, most of them quietly consequential. And until recently, none of the software in the room knew what any of that meant.
The clearest version of the problem looked like this: I would finish clinic on a Friday with fourteen notes unwritten. I would carry them home. I would write them after my kids were asleep. Sometimes I would catch myself, at eleven at night, trying to reconstruct from memory whether a patient's affect had been constricted or merely flat. That is not how a careful note should be produced. That is the inevitable consequence of asking a clinician to be a present human with a patient and a typist for an insurance company at the same time.
I tried the ambient scribes. Several of them. They were impressive at capturing what a primary-care visit sounds like — chief complaint, review of systems, plan. What they could not do, in any version I tested, was capture a psychiatric encounter. One of them produced a note from a forty-minute medication-management visit and omitted the mental status exam entirely. Another inserted the phrase “patient denies suicidal ideation” into a section where I had not, in fact, asked. The transcription was accurate. The clinical document was not.
Around the same time, I was working in my research lab on a different problem: how to bring the relevant evidence to the moment of a clinical decision, instead of asking the clinician to do the synthesis in their head. The evidence for pediatric ADHD with comorbid anxiety, for instance, is unambiguous. It is also, in practice, almost never applied evenly. Most clinicians do not have time during a twenty-minute visit to look up the recommendations from a specific RCT in Google Scholar. I wanted the evidence to show up where the decision is, not in a journal six months later.
At some point those two problems became one problem. The note and the evidence are not separate artifacts. They are the same cognitive workflow, written down. So Sigmund is built around that workflow: he sits in on the session, watches the MSE, weighs the differential, drafts the note, and holds the citation chain — all in the same draft. The clinician signs it.
The underlying thesis is small and stubborn: psychiatry deserves software built around its actual cognitive work, not adapted from a primary-care template. That is the only thing Sigmund is trying to do.
The name
Why he's called Sigmund

Freud trained as a neurologist. Before the couch and the case histories, he spent years at the bench: staining nerve cells, mapping the medulla, publishing a monograph on aphasia that held up for forty years. In 1895 he tried something larger. He sat down to write a Project for a Scientific Psychology, an account of memory, attention, and judgment built out of neurons and the energy that moves between them. He wanted a psychiatry that ran on mechanism instead of metaphor. He abandoned it, unpublished. The instruments to test any of it were a hundred years away.
I named this after him because the project is finally buildable. A psychiatric encounter is a reasoning task: weigh the history, read the mental status, rank the evidence, commit to a plan, and write it down so the next clinician can follow the logic. That is the work Freud wanted to formalize and couldn't. Sigmund does it in the room, in the open, with every recommendation traced back to the paper it came from.
There is a second reason the name fits. Freud's one instrument was his attention. Somewhere along the way, psychiatry pointed that attention at a screen instead of a patient. Most of the visit goes to typing into software built for a primary-care template; the notes get finished later, from memory. Sigmund carries the documentation so the clinician can carry the patient. The attention goes back where it belongs.
“The intention is to represent psychical processes as quantitatively determinate states of specifiable material particles.”
Contact
Reach me directly
Ryan reads every message himself.
Contact via waitlistSigmund is investigational and intended to assist — not replace — clinical judgment.