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Carl Sagan was a frequent guest in Dr. Grinspoon’s family home. Here he is teaching Peter to read.

Dr. Peter Grinspoon

Peter Grinspoon, M.D. is a primary care physician and educator at Massachusetts General Hospital and an Instructor in Medicine at Harvard Medical School. He is a certified health and wellness coach. He is currently serving as a board member of the advocacy group Doctors For Cannabis Regulation, which works towards legalizing cannabis with an eye toward social justice issues.

According to Wikipedia, Dr. Grinspoon “Is an authority on virtually all aspects of cannabis, including recreational and medical usages, as well as political issues and social history.”

He has treated patients with, and counseled people on, cannabis for several decades. In the cannabis industry, he has served as an expert witness, as a consultant, and as a medical and scientific advisor.

His latest book, “Seeing Through the Smoke: A Cannabis Specialist Untangles the Truth About Marijuana” will be out in April, 2023 (Prometheus)

Dr. Grinspoon is a Contributing Editor to Harvard Health Publications, where his popular blogs are read by millions. His blog on CBD has more than four million page views.

In recovery from opiate addiction, he has been a national leader on the issue of physician health and has served as an Associate Director of the Massachusetts Physician Health Service, helping physicians with addiction and mental health issues. 

He is the author of the memoir Free Refills: A Doctor Confronts His Addiction published by Hachette Book Group, which was optioned by MarVista Entertainment (the option has since reverted back).

He graduated with an M.A. in Philosophy with honors from Swarthmore College. He then spent five years as a Campaign Director for the environmental group Greenpeace before entering medical school at Boston University School of Medicine, where he graduated with honors. He completed his residency in the year 2000 at Harvard’s Brigham and Woman’s Hospital and has been employed at Harvard-affiliated hospitals ever since.

He has appeared on national television including NBC, C-SPAN and Fox and Friends, Good Morning America, MSNBC and The Daily Show, discussing issues ranging from cannabis to the opioid crisis; he has been appeared in the national press such as on NPR: All Things Considered and in People magazine, The Washington Post, The New York Times, USA Today, The Boston Globe, and New York Magazine. His writing has been published in The Nation, The Los Angeles Times, The Narrative Inquiry In Bioethics, and The Psychiatric Times.

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Peter Grinspoon M.D.
  • Everything about copyright experiences explained
    ...example psilocybin or LSD, involves taking a fraction of an everyday dose,” claims Dr Peter Grinspoon, teacher in medication at Harvard Professional medical School, “a dose that’s A great deal reduce than one particular would choose if they wished...
  • The 5-Second Trick For Order LSD discreet shipping Paris
    ...include psilocybin or LSD, includes having a portion of a regular dose,” suggests Dr Peter Grinspoon, instructor in medicine at Harvard Clinical School, “a dose that’s Substantially lower than a single would choose if they needed to hallucinate or...
  • Massachusetts General Brigham primary care doctors file to unionize - CBS Boston
    ...is now with the hospitals," primary care physician with Mass. General Brigham Dr. Peter Grinspoon said.He says that primary care physicians are experiencing severe burnout, and quitting frequently due to the large workload."The medical system...
  • College lecturer's gaming obsession with 'Call of Duty' and 'Fortnite' lands him in hospital...
    ...various health risks, as highlighted by Dr. Peter Grinspoon on Harvard Health.Health Impacts of Excessive GamingOveruse ... numbness or even permanent damage, said Dr. Peter Grinspoon. A prevalent injury is carpal tunnel syndrome, which involves...
  • Stigma to Sunlight: The Social Evolution of Cannabis in the United States
    This discrepancy has led to a lack of information about the proven risks and benefits of cannabis use. Medical professionals, like Dr. Peter Grinspoon, are advocating for policy re-evaluation to advance biomedical progress and improve patient...
  • The Mistruths About Pot – FIHR
    The mistruths about potDr Peter Grinspoon who writes for Substack (8/mo$80/yr) is on staff at Massachusetts General Hospital and Harvard Medical School. He comes from a family that has resisted...
  • Harvard Health Publishing Editorial Board
    ...Massachusetts, and lives in Wellesley with her husband and children.Peter Grinspoon, MDContributorDr. Peter Grinspoon is a primary care physician, educator, and cannabis specialist at Massachusetts General Hospital; an instructor at Harvard...

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