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Mary R. Welch, MD

Board Certifications: 
Expertise in: 
Neuro-Oncology, Brain & Spinal Tumors
Accepting New Patients
Profile Headshot


Phone Appointments

New and Existing Patients: 
(212) 342-0571


For existing patients, login to make an appointment, view documentation or contact your care provider.

Credentials & Experience

Board Certifications

  • Neurology

Clinical 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


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

Honors & Awards

ASCO Conquer Cancer Foundation Merit Award

Comparative Effectiveness Research Award

Arnold P. Gold Humanism and Excellence in Teaching Award

About Mary Welch

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.

Academic Titles

  • Assistant Professor of Neurology at CUMC

Committee/Societies/Council Memberships

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

Hospital Affiliations

  • NewYork-Presbyterian/Columbia


  • French


  • Female

Insurance Accepted

For billing questions, please call (212) 342-4432.


  • EPO
  • HMO
  • Medicare Managed Care
  • NY Signature
  • POS
  • PPO
  • Signature Administrators
  • Student Health


  • Essential Plan
  • Medicaid Managed Care
  • Medicare Managed Care

Amida Care

  • Special Needs Plan


  • EPO
  • Great West
  • HMO
  • POS
  • PPO


  • HMO
  • Medicare Managed Care
  • PPO


  • 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


  • Child/Family Health Plus
  • Medicaid Managed Care
  • Medicare Managed Care

Local 1199

  • Local 1199


  • MagnaCare


  • Multiplan

Oxford Health Plans

  • Freedom
  • Liberty
  • Medicare Managed Care




  • Columbia University Employee Plan
  • Compass (Exchange)
  • EPO
  • Essential Plan
  • HMO
  • Medicaid (Community Plan)
  • Medicare Managed Care
  • POS
  • PPO


  • Medicare Managed Care
  • SelectHealth


  • Medicaid Managed Care
  • Medicare Managed Care

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

Contact & Locations

710 West 168th Street
New York, New York 10032
(212) 342-0571


Selected Publications

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.