Philip Diaz

Philip Diaz, MD

  • Critical Care Medicine
  • Pulmonary Disease
  • Physician

Accepting new patients

4.9 out of 5
  • 154 Patient Satisfaction Ratings
  • 73 Patient Comments

Insurances We Accept


About Me

My focus is on caring for patients with chronic obstructive pulmonary disease (COPD). I also specialize in pulmonary rehabilitation for all patients who suffer from lung disease.

I believe in providing specialized, state-of-the-art and compassionate care to individuals with lung problems. Educating my patients is important to me. I feel very strongly about providing them an opportunity to participate fully in their own care.

Helping individuals make good decisions about their health is fundamental. My goal is to work together to achieve the best quality of life possible for them. Being able to do this makes me passionate about my career.

I love working at Ohio State. As the only academic medical center in central Ohio, we have the opportunity to provide world-class medical care, which includes the latest innovations.

When I'm not working, I like to relax with my family. I also enjoy sports. I'm an Ohio State football fan. As an undergraduate, I was captain of the Brown University tennis team.
  • Rated in the top 10 percent of physicians in the nation for patient satisfaction, 2014, 2015, 2018 and 2019
  • Elected to the Alpha Omega Alpha Medical Honor Society, 1988
  • America's Best Doctors, 2002–present
  • National Institutes of Health (NIH) Study Section “Infections, Reproductive, Asthma and Pulmonary Epidemiology (IRAP),” Member 2009–2013
  • Named to the Castle Connolly list of “Regional Top Doctors,” 2015–2019
  • Best Doctor in America, 2017

Procedures and Conditions I Treat

  • Sleep Disorders
  • Intensive Care
  • Intensive Care Units
  • Pulmonary Medicine
  • Pulmonary Disease, Chronic Obstructive
  • Rehabilitation
  • Pneumonectomy

Locations Where I Practice

Please note: Not all physicians schedule patients at each listed location. Please call the “Schedule an appointment” number shown above for scheduling assistance.

My Videos

Education and Training

Education History

Medical School

Penn State University, University Park, PA
9/1/1982 - 1/1/1986


Ohio State University Wexner Medical Center, Columbus, OH

1/1/1986 - 1/1/1989


Ohio State University Wexner Medical Center, Columbus, OH

1/1/1989 - 1/1/1992

Board Certifications

American Board of Internal Medicine

American Board of Internal Medicine (Subspecialty: Pulmonary Disease)

American Board of Internal Medicine (Subspecialty: Critical Care Medicine)

Academic Information

My Department

Internal Medicine

My Division

Pulmonary, Allergy, Critical Care and Sleep Medicine


The overall patient satisfaction rating is an average of all patient responses to the six doctor communication related questions shown below from the Clinician and Group Consumer Assessment of Healthcare Providers and Systems survey. For additional information about the patient satisfaction survey, please visit our Patient Satisfaction Survey page.

The comments are submitted by patients and reflect their view and opinions. The comments are not endorsed by and do not necessarily reflect the views of Ohio State Wexner Medical Center.

154 Patient Satisfaction Reviews

  • Overall
    4.9 out of 5
  • Explains Things Clearly
    4.9 out of 5
  • Listens Carefully
    4.9 out of 5
  • Gives Understandable Instructions
    4.9 out of 5
  • Knows My Medical History
    4.7 out of 5
  • Shows Respect
    4.9 out of 5
  • Time Spent Together
    4.9 out of 5
  • Reviewed on Oct 15, 2021

    It was a good experience. Dr. Diaz was very informative and professional. He followed up with me a couple of times to see how I was doing which is very rare in my opinion

  • Reviewed on Oct 08, 2021

    1st time I have seen him & was impressed, relieved & happy that he seemed interested in my condition, i.e., I wasn't just a body passing through.

  • Reviewed on Oct 07, 2021

    He was great.

  • Reviewed on Oct 04, 2021

    Very good & helpful.

  • Reviewed on Oct 02, 2021

    All good

  • Reviewed on Aug 29, 2021


  • Reviewed on Aug 27, 2021

    NOT CONDESCENDING! Friendly, direct, questioning. This was my first visit on a referral.

  • Reviewed on Aug 24, 2021

    Dr. Diaz is the most knowledgeable talented doctors by whom I have ever been treated. When my wife, my son and I first met him in his office we were struck by how gentle his eyes over his mask were and how thoughtful with his words regarding my illness and option. He saw what was missed by others because he asked questions others did not. I could not think more highly of his acumen talents and skill.

  • Reviewed on Aug 13, 2021

    Very professional

  • Reviewed on Jul 15, 2021

    I have never had a bad experience and consider every physician taking care of me to be exceptional in their field! The same goes with physical therapists in the arthritis pool and all personnel I have interacted with!

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Consulting and Related Relationships

At The Ohio State University Wexner Medical Center, we support a faculty member’s research and consulting in collaboration with medical device, research and/or drug companies because a faculty member’s expertise can guide important advancements in the practice of medicine and improve patient care. In order to provide effective management of these relationships, the University requires annual disclosures from all faculty members with external interests related to their University responsibilities.

As of 10/25/2021, Dr. Diaz has reported relationships with the companies or entities listed below. If you have questions about the relationships listed below, please ask the faculty member. If you have questions about how these relationships are monitored by The Ohio State University Wexner Medical Center, please contact our Compliance Office.

  • ROMTech