Jeremy Ennis, DO

CDR (Sel), MC, USN


Dr. Ennis is a native of southern Idaho where he earned a Bachelor of Science in Biology from Idaho State University.  He then attended Des Moines University College of Osteopathic Medicine under the military HPSP program and received his Doctor of osteopathy degree in 2006.  Medical Internship was completed at the National Capital Consortium in Bethesda, MD prior to transferring into Family Medicine Residency at Bremerton Naval Hospital in Bremerton, WA.  Dr. Ennis has served as a Family Medicine Physician for 12 years.  He worked as Program Director for Emergency Services in Guantanamo Bay, Cuba.  He later served as Department Head for Primary Care in Sigonella, Italy prior to transfer to Everett, WA where he serves as Senior Medical Officer.


Renata Lukezic, MD MS FAAP


A Chicago native, Dr. Lukezic received her BA from the University of Chicago in 1990 and her MD from Northwestern University in 1995.  She completed her pediatric residency at the University of Chicago and subsequently joined the faculty, where she remained until 2002.


In 2002, Dr. Lukezic moved to Germany to care for military families.  She spent the next 15 years as a civil servant with the US Army in various locations throughout Germany.  She moved to Everett, WA in November 2017 when she began her naval civil service.  She is very excited to be working for the Navy.


Dr. Lukezic earned an MS in Biostatistics from the University of Chicago and a certificate from Duke University’s Leadership Program in Integrative Healthcare.  She is a fellow of the American Academy of Pediatrics (AAP) and an AAP section member for tobacco control and integrative medicine.  Her additional professional interests include lactation medicine and nutrition.


David Stackhouse, MD


Dr. Stackhouse grew up in Schenectady, NY.  He went to medical school and did a Family Medicine Residency at the University of Texas.  He has worked for the Naval Hospital Bremerton since 2005 and at the Branch Health Clinic Everett since 2010.  Dr. Stackhouse enjoys the full spectrum of Family Medicine, especially Pediatrics.




Megan Challacombe, PA-C



A Pennsylvania native that earned her Bachelors of Science degree from Misericordia University in Dallas, PA and Master's in Physician Assistant (PA)

Studies from King's College in Wilkes Barre, PA. She has been practicing as a PA for 6 years now.  She has served at Naval Health Clinic Hawaii and onboard the USS Harry S. Truman (CVN75)



Christopher Conboy, PA-C MPAS



Lieutenant Conboy is a third-generation Sailor, raised in New York, California, Guam, and Hawaii.  An alumnus of Pennsylvania State University, in 2003 he earned his Bachelor of Science in Kinesiology.  Upon completion of a Masters in Physician Assistant Studies from the Philadelphia College of Osteopathic Medicine, he gained a direct commission into the Medical Service Corps in 2010.


He is a Primary Care Provider, currently assigned to the Family Medical Homeport at Naval Branch Health Clinic Everett.  Additionally, he serves as the command’s Emergency Management Officer, Operational Forces Medical Liaison, and Occupational Health Provider.


Prior Duty Stations: USS NIMITZ (CVN68), Naval Hospital Twentynine Palms, and a joint coalition tour with a US Army-led Provincial Reconstruction Team to Forward Operating Base - Ghazni, Afghanistan.


Andrew Tyson Hammond, IDC



HM1 Hammond enlisted in the Navy in 2005 as a Fire Controlman, after successfully completing a tour aboard USS Mobile Bay (CG 53), he converted to Hospital Corpsman and completed advanced training as a Pharmacy Technician.  He was stationed at NHC Charleston, SC where he earned his national CPhT certification.  He applied for and was accepted into the submarine IDC program in Groton, CT.  He graduated as Honorman in April 2013.  His class was the inaugural class of the combined IDC curriculum.  After IDC school, he was stationed aboard USS Rhode Island (SSBN 740), Blue Crew as Medical Department Representative.  He then served as the sole medical provider for Naval Outlying Landing Field, San Nicolas Island, CA.  He was then assigned to the forward deployed Mine Counter Measures ship, USS Dextrous (MCM 13), stationed in Manama, Bahrain, where he earned the Green H award for the Command.  He arrived at NBHC Everett in January 2018 and is currently serving as a healthcare provider and the LPO for the Family Medicine department.



Alexander Sanchez, IDC



HM1 Sanchez was born in the Dominican Republic and raised in New York City.  He has been with the US Navy since his initial enlistment as a Hospital Corpsman in 2002.


Duty stations include: HM “A” School, Fleet Marine Service School, Aerospace Medical Technician “C” School, Naval Health Clinic Patuxent River, MD, USS Bonhomme Richard (BHR) (LHD6), Naval Health Clinic Corpus Christi, Naval Undersea Medical Institute, USS Oklahoma City (OKC) (SSN 723) and currently station in Naval Branch Health Clinic Everett.


He has multiple deployments to the Middle East with the BHR during 2016-2010, one deployment with the Marines in 2011 to Afghanistan, and multiple deployments with the OKC.


He attended Independent Duty Corpsman (IDC) in 2012 and graduated in 2014.