Welcome to Aviation Psychiatry!

Dr. Gregory Kirk owns and operates the aviation specialty clinic, Aviation Psychiatry, LLC in Denver and Aviation Psychiatry of Nevada in Las Vegas.

Dr. Kirk is a HIMS psychiatrist in Denver and Las Vegas, and is Board-Certified by the American Board of Neurology and Psychiatry in Adult Psychiatry and Addiction Psychiatry. Dr. Kirk’s specialty in Aviation Psychiatry is in the assessment of complex medical certification cases.

For more information about the new Las Vegas location, conveniently located 10 minutes by car from McCarran International Airport, click here!

Dr. Kirk is also a certified Substance Abuse Professional (SAP) to evaluate pilots who have positive DOT pre-employment, random, post-accident, or reasonable-cause drug tests.

All photos on the site are original by Dr. Kirk


About Gregory L. Kirk, MD

Dr. Kirk’s professional-pilot clients span the country from coast to coast and fly for every legacy carrier and most western and mid-western regional carriers. Dr. Kirk also works with General Aviation pilots, student pilots, and Air Traffic Control applicants. Away from aviation, Dr. Kirk is a referral clinician for the NBA, a treating clinician in the NFL Program for Substances of Abuse, a 5280 Magazine “Top Doc” in Addiction Psychiatry, and is a recognized expert in suicide and unintentional death from substance abuse, mental illness, and behavioral disorders. Dr. Kirk also teaches on substance abuse and emergency psychiatry in community, professional, and academic settings.


To read Dr. Kirk’s curriculum vitae, please click here.




Commercial airline pilots have demanding careers. Junior pilots accumulate student debt and then begin physically and financially demanding work. Military pilots leave a long, structured career and join large corporations with a new hierarchy. Women pilots join a culture historically controlled by men. Aviators with children, whether men or women, must adapt to raising kids with demands most other professionals just cannot understand. Other issues, like regular sleep disruptions, being away from family and friends, fiscal pressures at your company, and the cyclical nature of the industry, are all issues that cause stresses unique to the industry.

Aviation psychiatry is not a formal subspecialty of psychiatry. It is a subset of general and addiction psychiatry that is practiced by a physician familiar with the career of a pilot and knowledgeable of the interfaces among pilot health, company policies, aerospace safety, and federal regulation.

What is HIMS? What is an SAP Evaluation?

What is HIMS?

From www.himsprogram.com

HIMS is specific to commercial pilots and coordinates the identification, treatment and return to the cockpit of impaired aviators. It is an industry-wide effort in which companies, pilot unions, and FAA work together to preserve careers and further air safety.

HIMS stands for Human Intervention Motivation Study and formed in a partnership with ALPA (the Airline Pilots Association) and the FAA in the 1970s. The goal of the original study was to collect data in a program that allowed pilots with alcohol problems to get help and with the possibility (but not guarantee) of preserving a career if conforming to program guidelines. Congressional authorization and appropriation allow the FAA to gather data about the program and offer a partnership between the pilot, the company, the union, and the FAA to identify what a commercial pilot should do to return to cockpit after getting treatment for an alcohol problem.

The FAA does not administer the HIMS program. Each airline operating a HIMS program designs to their need but there is collaboration in the industry. HIMS programs, individually administered at the airlines, contain similar elements in promoting an effective recovery process for the pilot. On the other hand, not every airline has a designated HIMS program, but even in those cases, an individual program can be designed. It just takes some extra work.

What is an SAP Evaluation?

The DOT has the authority to test safety-sensitive employees in transportation industries through 49 C.F.R. § 40, which was first published in 1988. Transportation workers, including pilots, are subject to pre-employment, random, post-accident, and reasonable-cause testing under DOT. After a DOT+ test is confirmed, the pilot must have an evaluation by a federally qualified SAP. Most aviation psychiatrists are not SAPs but Dr. Kirk can do both HIMS and SAP evaluations. For more about SAP evaluations, click this sentence.


For inquiries or private questions about your case, please go here.

You can also email me at gregkirk@avipsy.org.

Dr. Kirk has two office locations. Home base is in the beautiful City Park West neighborhood in Denver. The telephone number for Denver is (720) 399 9620.



My satellite clinic is in Town Square Las Vegas, across Las Vegas Boulevard from McCarran International Airport. The telephone number for Las Vegas is (702) 605 3625