Dr. Connie Mariano

Dr. Eleanor C. Mariano is the President and founder of the Center for Executive Medicine (CEM) in Scottsdale, Arizona.  She is known to her patients and the media as Dr. Connie Mariano.  To two former Presidents of the United States and their families, Dr. Mariano is simply “Dr. Connie.” Dr. Mariano graduated with a Bachelor of Arts in Biology, cum laude, June 1977 from Revelle College at the University of California in San Diego. She attended the nation’s military medical school, the Uniformed Services University of the Health Sciences School of Medicine in Bethesda, Maryland, graduating with a Doctor of Medicine degree in May 1981. Dr. Mariano completed her internship and residency in Internal Medicine at the Naval Hospital San Diego, CA in 1982 and 1986 respectively.  She is a Fellow of the American College of Physicians (FACP) and board certified by the American Board of Internal Medicine since 1987.  She has been a diplomate of the National Board of Medical Examiners since 1982.  Dr. Mariano currently is licensed to perform medicine in three states: Arizona, California, and the District of Columbia.

Dr. Mariano’s highest position in medicine was held as Physician to the President for President William J. Clinton, from 1994-2001. She has also held the title of Assistant Professor of Medicine at the Uniformed Services University School of Health Sciences and the Mayo School of Medicine.

An expert on the care of VIPs, celebrities, and world leaders, Dr. Mariano is a frequent guest speaker at international conferences as well as on media specials such as CNN’s “The Health of the President.”

With over thirty years in the medical profession, Dr. Mariano has taken care of patients both in the military and private sector.  She brings to the CEM her unique experience and passion in providing the highest standard of care to all her patients.

During those rare moments she can define as “free time,” Dr. Mariano enjoys writing (author of The White House Doctor: My Patients were Presidents” published in 2010 by St. Martin’s Press), hosting her on monthly internet radio show, “Dr. Connie’s House Calls” on the Empowerment Channel of Voice America network; travel with her retired-CEO husband; and visiting her grandchildren.


Ms. Lauren Siniscalchi

Ms. Lauren Siniscalchi, AFNP, complemented the CEM team in October 2017. Lauren is a veteran of the U.S. Air Force, having served 3 years at Davis Monthan Air Force Base in Tucson, AZ where she directed medical administrative functions of a Family Health Care Team with a patient population of over 3,900 beneficiaries, ranging in age from birth to geriatric. Lauren performed diagnostic and therapeutic care for occupational medical ailments and performed minor surgical procedures.

As an Advanced Family Nurse Practitioner (AFNP), Lauren is trained in all aspects of adult and pediatric patient care and interventions.

Lauren received her Family Nurse Practitioner degree in 2014 from Vanderbilt University, graduating Magna Cum Laude. Lauren is a member of the National Association of Nurse Practitioners, American Nurses Association, Tennessee Nurses Association, Sigma Theta Tau International Honor Society of Nursing, and the Vanderbilt University Alumni Association.

In her free time, Lauren enjoys running, hiking, cooking, and spending quality time with her cat, Bella.

Mr. James McLeod

Mr. James “Jim” McLeod is the Vice President and Clinical Administrator for the Center for Executive Medicine (CEM). Jim joined the CEM during the formative stages of the practice and has been instrumental in its growth and development.  He was recruited directly from the military during his second tour at the White House in 2005.

A nationally registered Medical Assistant, Jim holds a Master’s degree in Business Administration from Grand Canyon University and is a member of the international Honor Society in Business, Delta Mu Delta. Jim has been trained extensively in all aspects of patient care throughout his twenty four years in the United States Air Force.

Jim’s highest position held in medicine was Senior Independent Duty Technician in the White House Medical Unit during the Clinton Administration. His stellar performance during his first tour at the White House earned him a second set of orders as Director of Training for the White House Medical Unit during President George W. Bush’s final four years in office.

Jim enjoys project management as well as caring for patients and the relationships established in the Center for Executive Medicine.

When Jim is not managing the practice or assisting in patient care, he can be found participating in bass boat fishing operations on Lake Pleasant.


Ms. Rachel Leonard

Ms. Rachel Leonard joined the CEM team in June 2007 as the CEM’s Medical Concierge, responsible for scheduling and follow up on all of the referral appointments made outside of the CEM’s walls.

Rachel works diligently to provide every patient with an itinerary that fits perfectly into their busy schedules. Her greatest achievement is providing our patients with a “wow” experience.

Rachel also has a strong background in patient billing and coding. She is a trained Billing and Coding Specialist who was awarded certification by the National Health Career Association in 2006.

When Rachel is not arranging appointments or contacting patients, she’s a busy wife and mother with three children.  A graduate of the Scottsdale Culinary Institute, Rachel is an expert cook and baker.