CHOC Children’s at Mission Hospital Celebrates 25 Years of Service to South Orange County Families

Today, we salute our outstanding physicians, nurses, associates and volunteers at CHOC Children’s at Mission Hospital for providing 25 years of compassionate, world-class care to South Orange County families.

Since its opening on July 15, 1993, CHOC Mission has nurtured, advanced and protected the health and well-being of children through its state-of-the-art facility and top-rated programs and services. As the only dedicated pediatric health care facility for families in south Orange County, the surrounding coastal areas and north San Diego County, CHOC Mission is a separately licensed 54-bed “hospital within a hospital” on the fifth floor of Mission Hospital.

Learn more about CHOC Children’s at Mission Hospital.


CHOC Sleep Center Receives American Academy of Sleep Medicine Accreditation

CHOC Children’s Sleep Center has recently received a five-year accreditation from the American Academy of Sleep Medicine (AASM) for both Orange and Mission campuses, demonstrating CHOC’s commitment to the highest quality of patient care.

Accreditation by the AASM is the gold standard by which the medical community and the public evaluate sleep medicine facilities. CHOC joins an elite group of centers nationwide who have met the AASM’s rigorous standards in safety, patient evaluation and care, staffing and education, policies and procedures, quality improvement, facility and equipment, among other standards which incorporate the latest advances in sleep medicine.

“We are thrilled for this distinction. Our entire team is dedicated to the highest standards of care provided in our two state-of-the-art facilities, where patients and their families can have confidence that they are receiving quality diagnostics,” says Teresa O’Sullivan, CHOC’s director diagnostic and rehabilitation services.

CHOC’s sleep center focuses on identifying the physical or behavioral factors that affect sleep, from obstructed airways and breathing issues, to conditions including apnea and narcolepsy. The program’s mission is to help patients and their families understand a child’s sleep disorder and provide specialized treatment, sleep studies and close follow-up care.

The center’s multidisciplinary team includes board-certified pulmonologists, sleep medicine specialists and neurologists, as well as psychologists and specially trained sleep technologists.

CHOC Orange currently performs more than 950 sleep studies a year at its three-bed center, while CHOC Mission, which opened in fall 2014, performs more than 720 sleep studies a year in its three-bed center.

Learn more about CHOC’s pediatric sleep center services.

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CHOC Children’s at Mission Hospital Opens State-of-the-Art Sleep Center

CHOC Children's at Mission Hospital Sleep CenterFamilies in South Orange County now have access to a state-of-the-art Sleep Center for children who need overnight monitoring to diagnose problems related to sleep.

The new three-room unit at CHOC Children’s at Mission Hospital offers private, comfortable accommodations and the latest technology for routine polysomnograms. CHOC already performs more than 750 sleep studies a year at its three-bed Sleep Disorder Center in Orange.

Each room includes custom light control, a flat-screen TV, a fold-out bed for mom or dad, and unique artwork that showcases Southern California beaches to promote a soothing, calm environment.

The Sleep Center is equipped with live video monitoring and electroencephalogram (EEG), electrocardiogram (EKG), electrooculogram (EOG), electromyogram (EMG), thermistor, pulse oximeter and piezo crystal monitoring systems, allowing technologists to track every child’s breath, brainwave and movement during sleep.

In addition to registered sleep technologists, CHOC’s multidisciplinary sleep team includes a board-certified pediatric neurologist fellowship trained in sleep medicine, board-certified pediatric pulmonologists and psychologists.

Click here to learn more about the sleep conditions that affect children.


In the Spotlight: Jacqueline Winkelmann, M.D.

CHOC Pediatrician Realizes Childhood Dream of Helping Kids

Jacqueline Winkelmann, M.D.
Jacqueline Winkelmann, M.D.

As a child growing up in Puerto Rico, Dr. Jacqueline Winkelmann was inspired to become a pediatrician by her mother’s uncle, who was one of the first pediatric surgeons in Puerto Rico. Young Jacqueline would accompany her great-uncle on his rounds as he visited farms to see patients after surgery. The families typically paid for their visits with chickens, eggs or other crops. Jacqueline saw first-hand how important it was to help children and how much her great-uncle loved his job.

Today, Dr. Winkelmann has realized her dream to follow in her great-uncle’s footsteps. She is a board-certified pediatrician with privileges at CHOC Children’s Hospital and CHOC Children’s at Mission Hospital (CHOC Mission). She primarily works at CHOC Mission, where she is the current Chief of Staff-elect.

“My goals for my Chief of Staff years include creating awareness in our community of the presence and services offered at CHOC Mission for the population in South Orange County, as well as improving communication between hospital doctors and community pediatricians,” Dr. Winkelmann said. “Another goal and one that motivated me to take the job is optimizing food services for our patients, parents and visitors.”

During the past three years, Dr. Winkelmann has devoted much of her time to tackling the problem of prescription drug abuse among teens. She became involved after a group of CHOC Mission nurses began a successful program to educate physicians about prescription writing and to educate families about the dangers of over-the-counter medications, teen abuse of those medications, and the proper ways to dispose of excess medications. The nurses sought to reduce the availability of excess pain medications that sit in home medicine cabinets and developed a hospital form that tracks how many pain pills are actually taken during the 24 hours prior to discharge. This helps physicians better estimate the amount of pain medication young patients actually need later at home.

“Nationwide, the prescription and over-the-counter drug abuse problem is the fastest-growing drug problem in the country,” she explained. “Teens abusing over-the-counter drugs in South Orange County had reached epidemic proportions. We’ve managed to decrease the pill count of prescribed pills by over 50 percent.”

Dr. Winkelmann also has a special interest in pediatric nutrition and is an excellent cook. She sits on the Sapphire at School Nutrition Board as an advisor for healthy school lunch programs for public and private schools in Orange County. She also attends national conferences about nutrition and works with sports teams in Orange County to educate players, coaches and parents about the importance of sound nutrition on and off the field.

Over the summer, she launched a new initiative called Doctor Jacq: Nutrition Coach for Young Athletes, to share her expertise. Her website is

“I am passionate about this area of nutrition because I want to help kids understand the relationship between food and how they feel and how they perform. These are lessons they will carry way after they are done playing sports,” she said.

Dr. Winkelmann attended medical school at the University of Illinois at Chicago College of Medicine. She completed her residency training, including holding the position of Pediatric Chief Resident, at Hope Children’s Hospital in Chicago. Dr. Winkelmann speaks fluent English, Spanish, French and Portuguese. She was also recognized as a 2013 “Physician of Excellence” in Pediatrics by the Orange County Medical Association, in Orange Coast magazine.

Married, Dr. Winkelmann is the proud mom of a 12-year-old daughter and 7-year-old son.