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Mary R. Welch, MD

  • Assistant Professor of Neurology at CUMC
Mary R. Welch, MD

Mary Welch, MD is an Assistant Professor of Neurology at CUMC, in the Division of Neuro-Oncology. Dr. Welch graduated from Chicagos' Northwestern Feinberg School of Medicine. She completed neurology residency here at Columbia, followed by sub-specialty training in neuro-oncology at Memorial Sloan-Kettering Cancer Center. In her second year of fellowship, she earned a Comparative Effectiveness Research Award to attend Columbia's Summer Research Institute at Mailman School of Public Health.

Upon completing her training, Dr. Welch worked for several years as a practicing neuro-oncologist and Assistant Professor of Neurology at Montefiore Medical Center in the Bronx. There, she served as principal investigator for numerous phase I and II clinical trials for the treatment of primary and metastatic brain cancer. She also developed a strong research interest in improving patient access to both standard and investigational therapies. In addition to seeing both inpatient and outpatient neuro-oncology patients, Dr. Welch maintains an active research program within the Division of Neuro-Oncology.

Dr. Welch sees patients with primary brain tumors including, but not limited to glioma, meningioma, skull-base tumors and central nervous sysem lymphoma.  She also provides consultative services for patients with neurological complications of cancer including brain and leptomeningeal metastases.

Departmental Appointments

  • Department of Neurology
    Division of Neuro-oncology

Board Certifications

  • Neurology

Areas of Expertise

  • Neuro-Oncology
  • Brain & Spinal Tumors
  • Acoustic Neuroma
  • Astrocytoma
  • Anaplastic Astrocytoma
  • Brain Cancer
  • Brain Metastases
  • Brain Stem Glioma
  • Brain Tumor
  • Carcinomatous meningitis
  • Chordoma
  • Choroid Plexus Carcinoma
  • Choroid Plexus Papilloma
  • Ependymoma
  • Glioblastoma
  • Gliomas
  • Hemangioblastoma
  • Leptomeningeal metastases
  • Medulloblastoma
  • Meningioma
  • Metastatic Cancer
  • Mixed Glioma
  • Neurofibromatosis
  • Oligodendroglioma
  • Oligoastrocytoma
  • Glioblastoma Multiforme
  • Spinal Cord Tumor
  • Second Opinion
  • Spinal Tumors

Languages Spoken

(in addition to English)

  • French

Education & Training

  • MD, Northwestern University Feinberg School of Medicine
  • Internship: New York University Langone Medical Center
  • Residency: NewYork-Presbyterian Hospital/Columbia University Medical Center
  • Fellowship: Memorial Sloan-Kettering Cancer Center


  • Neurological Institute of New York

    710 West 168th Street
    New York, NY 10032
    For new and current patient appointments, call:
    (212) 342-0571

Provider Affiliations

  • NewYork-Presbyterian/Columbia

Insurance Programs

Please contact the provider's office directly to verify that your particular insurance is accepted.

  • Aetna [EPO, HMO, Medicare Managed Care, NY Signature, POS, PPO, Signature Administrators, Student Health]
  • Affinity [Essential Plan, Medicaid Managed Care, Medicare Managed Care]
  • Amida Care [Special Needs Plan]
  • Cigna [EPO, Great West, HMO, POS, PPO]
  • Emblem/GHI [HMO, Medicare Managed Care, PPO]
  • Emblem/HIP [ConnectiCare, EPO, Essential Plan, HMO, Medicaid Managed Care, Medicare Managed Care, POS, PPO, Select Care (Exchange), Vytra]
  • Empire Blue Cross Blue Shield [Blue Priority, EPO, HMO, Medicare (Mediblue), NYP Employee Plan, Pathway (Exchange), POS, PPO]
  • Empire Blue Cross Blue Shield HealthPlus [Child/Family Health Plus, Essential Plan, Medicaid Managed Care]
  • Fidelis Care [Child/Family Health Plus, Medicaid Managed Care, Medicare Managed Care]
  • Healthfirst [Child/Family Health Plus, Medicaid Managed Care, Medicare Managed Care]
  • Local 1199 [Local 1199]
  • MagnaCare [MagnaCare]
  • Multiplan [Multiplan]
  • Oxford Health Plans [Freedom, Liberty, Medicare Managed Care]
  • UnitedHealthcare [Columbia University Employee Plan, Compass (Exchange), EPO, Essential Plan, HMO, Medicaid (Community Plan), Medicare Managed Care, POS, PPO]
  • VNSNY CHOICE [Medicare Managed Care, SelectHealth]
  • WellCare [Medicaid Managed Care, Medicare Managed Care]

This provider accepts new patients

Appointment Phone Number: (212) 342-0571

Contact Info

  • Office Phone: (212) 342-0571


American Academy of Neurology, Member

Society for Neuro-Oncology, Member

American Society of Clinical Oncology, Member

Alliance for Clinical Trials in Oncology, Member

NRG Oncology, Member

Honors & Awards

ASCO Conquer Cancer Foundation Merit Award

Comparative Effectiveness Research Award

Arnold P. Gold Humanism and Excellence in Teaching Award

NIH Grants


    Dec 20 2017 - Dec 20 2021


Pareek V, Welch M, Ravera E, Zampolin RL, Sequist LV, Halmos B. Marked differences in CNS activity amongst EGFR inhibitors: case report and mini-review. J Thorac Oncol. 2016 Jul 24 [Epub ahead of print]

Yang Y, Haigentz M, Welch MDiplopia and Ataxia in a Heavy Smoker. JAMA 2015 September; 314(9):942-943.

Glover R, Brook A, Welch M. Teaching Neuroimages: Leptomeningeal carcinomatosis.  Neurology 2014 May; 82(21): e183-4.

Welch M, Sauter C, Matasar M, Moskowitz C, Omuro A. Autologous stem cell transplant in recurrent or refractory primary or secondary central nervous system lymphoma using thiotepa, busulfan, and cyclophosphamide. Leukemia and Lymphoma. 2015; 56(2):361-7.

Welch M, Grommes C.  Influence of anti-diabetic therapy of diabetes mellitus type II (DM) on survival in glioblastoma (GBM) patients. CNS Oncology. 2013 2(3), 237–246.

Welch M, Omuro A, DeAngelis L. Outcomes of the Oldest Patients with Primary Central Nervous System Lymphoma Treated at Memorial Sloan-Kettering Cancer Center. Neuro-Oncology. 2012 Oct; 14(10):1304-11.