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Dr. Tommy O 

A Leader in Modern Health Care

Thomas G. O'Brien, D.O.

Osteopath Medical Doctor 

You're in Good Hands

Pain Management

Weight loss

Medical Marijuana Pioneer / Author

About Dr. Tommy O 

Dr. Tommy O has a Doctor of Osteopathic Medicine Degree from the University of Osteopathic Medicine and Health Sciences, a Masters Degree in Clinical Nutrition from the New York Institute of Technology, and completed his Family Medicine Residency at St. Barnabas Hospital, Bronx, New York. Dr. Tommy O spent the first sixteen years of his career practicing Primary Care in an underserved community located in the South Bronx. He then opened a private practice on the Upper East Side of Manhattan.

Dr. Tommy O has devoted his life to not just treating his patients but educating them so they can improve their lifestyle through healthier choices. Through the use of medication, hands-on manipulation, and education, he is able to treat each patient as an individual and tailor a protocol that will best resolve any medical issue. Dr. Tommy O is known for his ability to explain complex medical problems in simple terms so that every patient can understand and help control their well-being.

More than a medical practitioner, Dr. Tommy O is an author with two certified number 1 Amazon Best sellers, as well as a public servant who has devoted much time and effort to enriching communities across New York City. Dr. Tommy O has established Heath Education Learning Program, Inc., a Nonprofit (401(c)(3)) organization. Please visit: for more information or to donate.

Radio Appearances

TV Appearances

 Articles / Publications


WOR - 710 AM

"Community Concerns"

NBC Nightly News

"Flu WideSpread"

Norwood News

Deborah Kobylt Live

WLIM - 1580 AM

"Radio Formula" 

BronxNet News

"Bronx Perspectives"

Changes Magazine

Late Night Health Radio

with Mark Alyn

WPAT- 930 AM

"Culture Zone"

Church Alive

"Health Alive Series"

Writer's Life Magazine

The Authors Show

with Danielle Hampson

   WBLS - 107.5 FM - NY

"Daily Dose" with Dr. Bob Lee

Ask Dr. Tommy O Show

Host: Dr. Tommy O

In Magazine

Something Something

with Larry Sands

  WBLS - 107.5 FM - NY

"The Quite Storm" with Lenny Green


Save on Cannabis: Full - Spectrum CBD

Sheldon Eskin Show

LL Cool J's, Rock the Bells

Roxanne Shante's Sirius Radio Show

NYCRA, Medical Cannabis Trend: Where are we now?

Let's be Blunt with Montel

Montel Williams

 LI News Radio, 103.9 FM - NY

Back To Business with David Levenstein


 Why Patients Should Use CBD For Psychosis Symptoms Pt. 2


 LI News Radio, 103.9 FM - NY

Ask Dr. Tommy O with Dr. Thomas O'Brien


 Understanding Marijuana for Autism


Medical Marijuana

Real - life success stories

Certified #1 Amazon Be​st Seller

This book is for those of you who are looking for an alternative, either for yourself or for a loved one. And I hope the information inside serves as a support and a hug from me, and all the people I have worked with and practiced for. It is my hope that you will find community in this book and have better information that you can use to make good decisions about your health or help someone you love who is currently struggling. I can’t diagnose you here. I can only educate, and this book is designed to do that. So, the contents of this book are for educational purposes only. Nor can I treat you via this book. What I will do is describe how patients who have visited me in my practice have benefited from the use of medical cannabis, and how medical cannabis works in the body. My job, through this book, is to inform and educate, and let you know that you’re not alone. 

 Holistic Healing

True Stories From The Leading Expert In Modern Medicine

Certified #1 Amazon Best Seller

After the success of Dr. Tommy O's first book, Dr. Tommy O decided to write a second book and introduce Osteopathic Manipulative Therapy to his readers as an alternative treatment to reducing muscle skeletal pain.  As with his first book, Dr. Tommy O can’t diagnose, nor can he treat you via this book.  Thus, the contents of this book are for educational purposes only.  This book will describe how patients who have visited Dr. Tommy O's practice have benefited from the use of Medical Cannabis and Osteopathic Manipulative Therapy.  The mission of this book is to inform and educate, and let you know that you’re not alone.

Host: "Ask Dr. Tommy O" Health Education Show:

"Ask Dr. Tommy O", is a four-time Beta Award winning television program that enables our local community to live a healthier lifestyle by empowering each individual to learn more about health issues. To see Doc Tommy in action, please visit:

United States Amateur Boxing Association Certified Ring Side Physician:

As a Ring​ Side Physician, Dr. Tommy O provides Pre - Post bout medical examinations for both Amateur and Professional Boxing events.  Dr. Tommy O and the late great boxing writer and sports historian, Bert Randolph Sugar.  Bert was known for his trademark fedora and unlit cigar.  

Dr. Tommy O's Community Service:

9/11 World Trade Center Attack: 

Stuyvascent Triage Center

New York CIty Marathon: Captian

Wounded Warriors Half Marathon

World Police - Fireman's Games

New York Daily News

Golden Gloves Tournament

Olympic and Professional Athletes

New York Boxing Tournament

Ring Masters Boxing Championship

Metro Female Boxer Olympic Trails

 Haymakers For Hope Boxing Fundraiser

Univision Soccer Tournament

Fight for Charity Boxing Event

 Village Lions Rugby Club

Boxing Fundraiser 

Gleasons Boxing Gym,

Make a Dream Fundraiser

Brother in Arms Fundraiser

 Health and Wellness Expo: 2018

WBLS: Circle of Sisters Expo

FDNY Boxing Team Charity Events

 New York Guard: 102nd Forward Medical Support Detachment:

As the former Commander of the 88th Brigade, 102nd Forward Medical Support detachment, New York Guard, Captain O'Brien's primary objective was to encourage personal growth among his troops as well as provided medical care for his troops and their family members within the Greater New York City Area. While on active duty, Captain O'Brien received four Mission Support Awards as well as one Humanitarian Award.

United States Patent:

On December 16, 2003, Dr. Tommy O was awarded a United States Patent (US D483,910 S), for a Callus Remover with Surgical Steel Blade.


United States Boxing Association: Metro Chapter  

 Federal Emergency Management Agency (FEMA)

United States Boxing Association: 

Metro Chapter - Ring Side Physician

Freemason: Scotia 634 

Knight Templar: Coeur De Leon 

Commandry No. 23

Royal Arch Mason:

Jerusalem - Amity No. 8