I am an AI executive and Chief Scientist with a career spanning invention, research leadership, and large-scale commercialization of artificial intelligence systems in healthcare and enterprise domains.
My work spans computer vision, medical imaging, healthcare AI, multimodal foundation models, neuro-inspired architectures, and trustworthy AI systems deployed in real-world settings. It has helped shape medical imaging AI, multimodal foundation models, and clinical decision systems—translating research innovations into deployed technologies, enterprise platforms, and new business lines with global impact.
I operate at the intersection of scientific discovery, enterprise AI strategy, and organizational leadership, building systems that move from early-stage research into production environments at scale.
I also teach and mentor students in Stanford’s Biomedical Data Science Program and collaborate with leading researchers, clinicians, startups, and institutions worldwide.
I’m open to conversations around AI strategy, scientific direction, and building AI systems that work with precision in high-stakes environments.
35+ years in AI research with 300+ publications, 180+ patents, and 20K+ citations across computer vision, medical imaging, and healthcare AI.
Led development and translation of AI systems into enterprise platforms and healthcare products, contributing to multi-billion-dollar impact across IBM’s AI and healthcare portfolio.
Shaped AI strategy, technical direction, and investment priorities across enterprise research and business units, influencing platform evolution and long-term technology roadmaps.
ExploreBuilt and led global AI organizations of up to 100+ researchers, engineers, clinicians, and product teams spanning research, development, and deployment.
Active leadership across academia, industry, and healthcare ecosystems through advisory roles on boards, conference leadership (CVPR, MICCAI), and co-founding initiatives such as the Digital Twin Society.
IBM Fellow, IEEE Fellow, AIMBE Fellow, MICCAI Fellow. IEEE EMBS Technical Achievement Award.
I have helped shape long-term AI and technology strategy across research organizations, enterprise platforms, and healthcare businesses by identifying emerging opportunities, guiding investment priorities, and translating scientific advances into scalable products, business initiatives, and new market opportunities.
I have led and scaled global AI research organizations operating at the intersection of research, engineering, and clinical deployment, with teams spanning up to 100+ members across distributed functions.
I work across academia, healthcare institutions, and industry organizations to build collaborative AI systems that translate research into real-world deployment.
Leadership roles across global AI, healthcare, and computer vision communities spanning conference organization, scientific governance, editorial leadership, and cross-sector advisory work.
Co-founder of a global initiative advancing digital twin technologies in healthcare, connecting academia, industry, and clinical systems for precision medicine and AI-driven healthcare transformation.
My work has translated into deployed AI systems, enterprise platforms, and new healthcare and AI product lines across industry and clinical settings.
Led a large-scale IBM initiative called the Medical Sieve Radiology Grand Challenge that translated foundational research in medical imaging AI into the Watson Health Imaging business.
The next frontier of AI is not only generating answers, but ensuring their correctness. As foundation models become more capable, high-stakes domains such as healthcare require systems that can independently verify, explain, and correct outputs before they influence human decisions.
My current research focuses on building Verification AI systems that move beyond generation toward trust, safety, and accountability in multimodal AI.
Recent work introduces verifier models for radiology AI that detect factual inconsistencies, localization errors, and hallucinations in generated clinical reports. This is in collaboration with Prof. Pingkun Yan's group at RPI. The Master's student who led the work under our guidance recently won the UC Berkeley Data Science ChangeMaker Award for building trustworthy AI.
This direction shifts AI systems from generation-centric to verification-centric design.
Phrase-grounded discriminative models for detecting hallucinations and factual inconsistencies in radiology reports that are agnostic to report generation models (RRG).
Automatic correction of radiology reports using fact-checking model-guided LLMs. Clinical studies documenting measurement improvement in report quality.
Large-scale dataset of 27 million pairs of images with real and fake findings used to train fact-checking models. It is the largest region-annotated dataset of fine-grained findings in chest X-rays.
RQ score is a new light-weight quantitative scoring method to evaluate the quality of LLM-generated radiology reports that measures clinical finding accuracy along with the localization accuracy.
Phrase-Grounded APO improves radiology report quality by automatically verifying and correcting generated reports during inference, eliminating the need for ground-truth preference data. By combining factual verification with image-grounded alignment, the method improves report quality by 30–40% across multiple state-of-the-art radiology report generators.
Advanced search techniques I developed for vector DB that exploit multimodal document structure in pdfs, and combine lexical and semantic search in an integrated way are now part of new IBM Content-aware storage product
Vector quantization with sorting transformation
We developed a new sorting-based transformation that improves vector quantization efficiency, achieving near-uncompressed search accuracy with significantly lower memory cost.
I shepherded IBM's Granite Vision 3.3 2B foundation model; Top OCRBench performer, 95K+ downloads
The formation and recall of memories in the brain utilizes the linkage between episodic and semantic memory subsystems. In this work, I exploited this paradigm to design a new vision-language model that projects visual and textual concepts into a semantic memory space to build stable conceptual associations between objects and ways of referring to them.
The bioinspired memories project I led on building a computational model of the hippocampal memory system launched a new IBM Content-aware storage product
The hippocampal trisynaptic circuit plays a key role in memory formation and recall. While CA3 auto-associative behavior has been modeled using Modern Hopfield Networks, scaling these models for large-scale storage remains challenging. This work introduces a dentate gyrus–inspired encoding stage before Hopfield storage, enabling accurate retrieval of large sets of facts through cross-modal associations.
Precision AI develops highly accurate AI systems for diagnosis and intervention in high-stakes clinical settings. My work includes early generative AI for chest X-ray interpretation and novel intravascular imaging architectures for cardiovascular interventions.
Geo-UNet: Geometry-guided U-Net
In collaboration with Boston Scientific and MIT, we developed novel neural network architectures for intravascular imaging and stent guidance, technologies that were subsequently commercialized and deployed clinically through Boston Scientific's AVVIGO multimodality guidance platform.
My research develops multimodal AI methods that integrate clinical, imaging, genomic, and laboratory data to improve disease modeling and outcome prediction. We introduced multiplexed graph neural networks for cross-modal fusion, achieving state-of-the-art results in treatment outcome prediction and earning recognition as a MICCAI 2022 Young Scientist finalist. More recently, through multimodal fusion research of cardiac MRI with genomci data, we enabled the discovery of 49 genomic loci associated with cardiac morphology that appeared on the cover of Nature Machine Intelligence.
My work in healthcare AI has spanned clinical decision support, healthcare informatics, predictive analytics, and population health. Through systems such as AALIM and Medical Sieve, I pioneered multimodal AI approaches that integrated clinical, imaging, and laboratory data to support diagnosis, patient similarity search, clinical reasoning, outcome prediction, and healthcare operational analytics at scale.
IBM launched a new Watson Health Imaging business by acquiring Merge Healthcare to commercialize the research I led in AALIM and Medical Sieve eras.
Please see publications for more details on this line of work.
Over the years we produced many datasets for our healthcare and other AI projects, some of which have been contributed to open source. In particular, the Chest Imagenome dataset contributed by us to MIT Physionet is being increasingly adopted to create more downstream datasets as shown below. It is actively being used in papers on chest X-rays including the latest paper in MICCAI 2026 with nearly 3000 registered users on Physionet for it and its derived datasets.
Developing talent and disseminating advanced knowledge in AI, medical imaging, and multimodal intelligent systems across academia, industry, and healthcare.
I advise and mentor PhD students, Master’s students, and postdoctoral researchers working at the intersection of multimodal AI, medical imaging, and trustworthy AI systems.
I design and teach advanced courses and tutorials on multimodal AI, foundation models, and medical imaging for graduate students, researchers, and industry practitioners.
A concise synthesis of AI leadership, scientific direction, and enterprise-scale system development across healthcare and intelligent systems.
I welcome conversations on executive leadership opportunities, chief scientist and chief AI officer roles, technology strategy, startup advisory engagements, healthcare AI innovation, research collaborations, and invited speaking opportunities.
For executive opportunities, board and advisory roles, startup discussions, strategic AI initiatives, research partnerships, and speaking engagements: