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Leadership

Aaron Fox

Aaron D. Fox, MD

President
Public Policy Chair
Professor of Medicine
Albert Einstein College of Medicine/Montefiore Medical Center

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Dr. Aaron Fox is board certified in internal medicine and addiction medicine. His clinical care and research involves opioid use disorder treatment in primary care, syringe services programs, and criminal justice settings. Dr. Fox is the Director of the Bronx Transitions Clinic, which provides a medical home to people who were recently released from jail or prison, and he maintains an NIH-funded program of clinical research focused on buprenorphine treatment interventions.  

Kelly S. Ramsey, MD, MPH, MA, FACP, DFASAM

Immediate Past President
Chair of the Nominations/Membership Committee

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Kelly S. Ramsey, MD, MPH, MA, FACP, DFASAM is a board certified internal medicine and addiction medicine physician who has treated substance use disorder since 2004. She has focused her career on providing care for people who use drugs, treating HIV, hepatitis C (HCV), and substance use disorder. She has worked in an opioid treatment program (OTP) and federally qualified health center (FQHC) settings. Dr. Ramsey previously worked as the Chief of Medical Services at the NYS Office of Addiction Services and Supports (OASAS), the single state agency for the addiction services continuum of care, in a policy, regulatory, and clinical role. Dr. Ramsey has been an ardent harm reductionist for 30 years since she volunteered at the Santa Cruz Needle Exchange in the mid-1990s.

Dr. Ramsey currently works as an Addiction Medicine Physician and Addiction Medicine and Harm Reduction Consultant as well as providing low threshold clinical care and clinical supervision in addiction medicine in two drug user health hubs in New York. She has provided expert advice to the New York State Department of Health (NYSDOH) AIDS Institute and their Office of Drug User Health (ODUH), serving on numerous committees for more than 15 years, providing expertise in addiction medicine, harm reduction, HIV care, and HCV care.

Dr. Ramsey was the recipient of the New York State Commissioner’s Special Recognition Award for contributions to drug user health in NYS in December 2018. Dr. Ramsey was the Distinguished Contributions to Behavioral Medicine Award Recipient, awarded by the American College of Physicians (ACP) in April 2023. Dr. Ramsey was awarded the Case Western Reserve University School of Medicine Special Medical Alumni Board Award in October 2023. In October 2024, Dr. Ramsey was awarded the Excellence in Public Health Award by the NY Chapter of ACP.

Dr. Ramsey is the Immediate Past President for the New York Chapter of the American Society of Addiction Medicine (NYSAM) Board of Directors. In addition, she served as Region I Director, representing NYS, on the national American Society of Addiction Medicine (ASAM) Board of Directors from April 2021-April 2025.

Tiffany Lu, MD, MS, FASAM

President-Elect
Education Committee Chair
Associate Medical Director of Addiction Services, New York City Health + Hospitals | Jacobi

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Tiffany Lu, MD, MS, FASAM is Associate Medical Director of Addiction Services at New York City Health & Hospitals/Jacobi, where she oversees the safety net hospital’s addiction consult service and outpatient addiction clinic, with an integrated opioid treatment program underway. She is also Associate Professor of Medicine and Psychiatry at the Albert Einstein College of Medicine, where she leads addiction related education for medical students, residents, and fellows. Dr Lu is currently Education Chair and President-Elect for the New York Chapter of ASAM and member of the ASAM Quality Improvement Council.

Prior to joining Jacobi, Dr Lu was the Medical Director of Montefiore Medical Center’s Buprenorphine Treatment Network, where she led the implementation of office-based addiction treatment across 7 community health centers and expanded clinical training for medical trainees in addiction medicine.

Dr. Lu graduated from UCSF School of Medicine and completed her Internal Medicine Primary Care Residency at Massachusetts General Hospital. She holds a Masters of Science in Clinical Research Methods from Albert Einstein College of Medicine. 

Ross Sullivan, MD

Treasurer
Director-Medical Toxicology Consultation Service
Upstate Medical University Hospital-Syracuse
315-464-4910

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Dr. Sullivan completed his medical school education at SUNY Upstate Medical University in Syracuse, NY. After, he entered and finished a residency in Emergency Medicine at the same hospital.  Dr. Sullivan then completed a medical toxicology fellowship at the SUNY Upstate Poison Control Center and SUNY Upstate Emergency Department. Dr. Sullivan is also board certified in Addiction Medicine. Dr. Sullivan is currently the Executive Medical Director at Helio Health in Central New York, a comprehensive behavioral health treatment system. Dr. Sullivan also holds a faculty appointment at the SUNY Upstate Emergency Medicine department and Poison Control Center as the Medical Toxicology fellowship director. In addition, Dr. Sullivan serves as an Addiction Medicine expert/liaison at SUNY Upstate for inpatient addiction care as well as the Emergency Medicine Opioid Bridge Clinic.

Dr. Sullivan has co-authored several publications related to overdose and addiction, including “Cardiac conduction disturbance after loperamide abuse”, “Synthetic Cannabinoid Withdrawal”, “Baclofen overdose mimicking brain death”, “A randomized usability assessment of simulated naloxone administration by community members,” and “Bridge clinic buprenorphine program decreases emergency department visits”. Dr. Sullivan is currently a member of the Medical Advisory Panel to NY-OASAS (Office of Addiction Services and Support), the NY-DOH buprenorphine work group, as well as the Treasurer and Board Member of NYSAM (New York Society of Addiction Medicine).

Kristine Torres-Lockhart, MD

Secretary
Chief Medical Officer, Phoenix House New York

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Dr. Torres-Lockhart is board certified in addiction medicine and internal medicine and credentialed as an HIV specialist by the AAHIVM. She is founding director of the Addiction Consult Service at Montefiore’s Weiler Hospital and co-director of the Addiction Medicine rotation for medical trainees. She is focused on integrating addiction medicine into medical education and leads the development and implementation of health system interventions to improve substance use disorder (SUD) care in acute care settings and transitions of care to post-acute and ambulatory care settings.

Katherine Mullins

Katherine Mullins, MD

Communications Chair
Clinical Assistant Professor at Family Health Centers, New York University-Langone Brooklyn

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Dr. Mullins is board-certified in Internal Medicine and credentialed as an HIV specialist through the AAHIVM. She is the Assistant Director of Addiction Medicine at the Family Health Centers, a network of FQHCs within the NYU system located in Brooklyn. She focuses on improving the treatment of addiction within primary care and directs the FHC Buprenorphine Treatment Network. As a clinician educator with the Family Health Centers at NYU Langone Internal Medicine Residency program, she is developing and delivering the residency addiction curriculum.

Neha Pawar, MD

At Large Member
Assistant Professor, Department of Anesthesia and Perioperative Medicine, Department of Psychiatry

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Dr. Neha Pawar has specialized in the treatment of Addiction and Pain Medicine. She completed her residency in psychiatry and fellowships ​in Pain Medicine, Department of Anesthesiology and Addiction Medicine /Psychiatry, and Department of Psychiatry at the University of Rochester Medical Center. She joined as a senior instructor at Strong memorial hospital in Oct 2021 and works at Cancer Pain Center at Wilmot Cancer Center and Chemical dependency outpatient clinic, Strong Recovery.

Mashal Kamran Khan, MD

Mashal Kamran Khan, MD

At Large Member
Assistant Professor of Clinical Psychiatry, Weill Cornell Medicine

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Mashal Khan, M.D., is a Xi’an-Jiaotong University School of Medicine graduate and trained at Maimonides Medical Center, where he served as Chief Resident. Following his residency training, he completed a Fellowship in Addiction Psychiatry at Icahn School of Medicine at Mount Sinai, Mount Sinai St. Luke’s-West. He is board-certified in general and addiction psychiatry by the American Board of Psychiatry and Neurology. Dr. Khan is an Assistant Professor of Clinical Psychiatry Weill Cornell Medicine, where he works with the Liver Transplant Team and also serves as the Associate Program Director for the Addiction Psychiatry Fellowship. Dr. Khan’s most recent publication was a book titled “Technology-Assisted Interventions for Substance Use Disorders” for which he served as an editor. Prior to this, he authored a chapter titled, “Steroids, Dissociatives, Club Drugs, Inhalants, and Hallucinogens” in a book titled “Absolute Addiction Psychiatry Review”.

Betty Grace Lee, AGNP-BC, AAHIV

Betty Grace Lee, AGNP-BC, AAHIVS, CARN-AP

Associate Member
Addiction Medicine & Mobile Health Services Manager, Harlem United

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Betty Lee currently works on a mobile medical unit providing primary care to street homeless and unstably house individuals. She provides low threshold buprenorphine treatment and focuses on harm reduction. Her work in substance use began as an RN when she worked on a street outreach MAT program in the South Bronx. She has also worked on ACT teams in East Harlem and Brooklyn, where she learned a lot about the challenges of dual diagnoses psych and substance use.

Marco Barber Grossi, MD

Advocacy, Legislative & Public Policy Committee Chair
Attending Physician, Departments of Medicine and Behavioral Health, NYC Health + Hospitals/Jacobi

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Marco Barber Grossi is currently an attending physician for the Departments of Medicine and Behavioral Health at NYC Health + Hospitals/Jacobi.

Zina Huxley-Reicher, MD

Early Career Member
Addiction medicine fellow at Montefiore Medical Center

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Zina Huxley-Reicher is currently an addiction medicine fellow at Montefiore Medical Center after completing her Internal Medicine and Primary Care residency at Yale New Haven Health. Prior to medical school the Icahn School of Medicine at Mt. Sinai, she worked for the New York City Department of Health and Mental Hygiene on overdose prevention and naloxone distribution projects which was her introduction to caring for folks who use substances. Over the years her work has focused on providing care to those who use substances in a large variety of settings as well as the care of those returning home from jail and prison. She is passionate about improving access to substance use care, improving policies at all levels to allow our systems to better care for those individuals and partnering with communities to include and empower patients in their own care.

Manas Sharma

Manas Sharma

Medical Student/Resident/Fellow Member
Albany Medical College

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Manas Sharma is a second-year medical student at Albany Medical College from Phoenix, Arizona.

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