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A place where the best and brightest healthcare professionals are committed to providing medical care with compassion, integrity and excellence
Hoag Memorial Hospital Presbyterian is a nonprofit hospital located on California’s Orange County coastline since 1952. Here, we focus on providing acute patient care.
Neurosurgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
More about neurosurgeryPituitary Tumor Surgery
Developed and refined to improve modern brain and skull base neurosurgery, limiting trauma to surrounding tissues and nerves.
More about pituitary tumor surgeryKeyhole Brain Surgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
More about keyhole brain surgeryValet parking
Complimentary valet services are available Monday through Friday from 5 a.m. - 5:15 p.m. at the main entrance.
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Free on-site parking is available in the General Lot off Alton Pkwy.




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Hoag Memorial Hospital Presbyterian is a nonprofit hospital located on California’s Orange County coastline since 1952. Here, we focus on providing acute patient care.
Neurosurgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
Pituitary Tumor Surgery
Developed and refined to improve modern brain and skull base neurosurgery, limiting trauma to surrounding tissues and nerves.
Keyhole Brain Surgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
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At Hoag, we combine clinical excellence with compassionate, personalized care—earning top rankings for quality, safety and outcomes.
Patients choose Hoag because we deliver more than expertise. We offer access to advanced treatments, cutting-edge technology, and a robust portfolio of clinical trials, all within a system built around your needs.
Our unique “privademic” model blends the innovation of academic medicine with the efficiency and warmth of private practice. That means more collaboration, less bureaucracy, and care that moves as fast as science allows—without losing sight of the human connection that matters most.
From routine checkups to the most complex diagnoses, Hoag is committed to advancing care, improving lives, and being the health partner you trust.

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From prevention to early detection to treatment, we’re nationally recognized for excellence in breast care.
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We provide a coordinated, personalized wellness and treatment approach to gynecologic health for women at all life states.
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Real Stories. Real Lives Changed.
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Physician Carousel
Hoag Memorial Hospital Presbyterian is a nonprofit hospital located on California’s Orange County coastline since 1952. Here, we focus on providing acute patient care.
Neurosurgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
Pituitary Tumor Surgery
Developed and refined to improve modern brain and skull base neurosurgery, limiting trauma to surrounding tissues and nerves.
Keyhole Brain Surgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
Experts in delivering exceptional care for all women
Keyhole Brain Surgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.
Pituitary Tumor Surgery
Developed and refined to improve modern brain and skull base neurosurgery, limiting trauma to surrounding tissues and nerves.
Neurosurgery
The medical specialty concerned with the prevention, diagnosis, treatment, and rehabilitation of disorders which affect any portion of the nervous system.

Delivering a wide variety of medical care faster, more effectively and more efficiently for patients of all ages
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#1 hospital in the region by U.S. News & World Report

Magnet with distinction for nursing excellence

Center of Excellence in Robotic Surgery by SRC
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“It’s pretty incredible that we were able to go in for one procedure and come out looking and feeling like our best selves. We are both so grateful to the village that surrounded us during a time when we needed support and guidance the most.”

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Glioblastoma Patient to Hoag: ‘You Made My Year’

Exactly one year after his life-altering surgery, Bernd Frauzem sent Robert Louis, MD, Director of the Skull Base and Pituitary Tumor Program at Hoag’s Pickup Family Neurosciences Institute and Empower360 Endowed Chair in Skull Base and Minimally Invasive Neurosurgery, an email and a few photos. In the pictures, he’s smiling broadly, posing by a John Muir Wilderness park sign, where, in September, he’d completed an eight-day backpacking trip with his family. A few months earlier, he’d been skiing with friends. And in October he traveled to Germany to meet his new granddaughter.
“Thanks to the amazing work and encouraging words from you and the whole Hoag team, I was able to do all the things this year I had planned,” he said. “I will never forget your words that this surgery wasn’t done so ‘I could sit in a glass house.’”
In early October 2019, Bernd fainted in his office in Cypress, CA. Mistaking his collapse for a heart attack, paramedics rushed him to a nearby hospital, where doctors found his heart in good condition. They did not check his head, although he had hit it when he fell.
Shortly after, Bernd’s wife noticed that the avid hiker veered to the right whenever he walked. At her urging, he saw his primary care physician who ordered a brain scan.
“They found an orange-size tumor on the right side of my brain,” Bernd said. “Three days later on Halloween, Dr. Louis removed the tumor. I remember telling him that he’s carving me like a pumpkin.”
Despite his good humor, the gravity of the situation was terribly jarring. His tumor, a grade 4 glioblastoma, is aggressive and quite often lethal. Bernd had gone from a healthy and active outdoorsman to a possibly terminal brain cancer patient in a matter of weeks.
“My life was turned upside down. I told Dr. Louis, ‘I had so many plans for this year,’” he said. “Dr. Louis said, ‘Write down those things that you want to do.’”
The list was like a talisman, a reminder of what he was working toward during his brain cancer journey: Meeting his new granddaughter, skiing, and backpacking with his family.
Bernd felt understood by Dr. Louis and the Hoag team, and he knew he was in good hands.
“I had full confidence in Hoag. The technology that Hoag has is amazing. Dr. Louis used a simulation program and ‘went’ into my head before he even conducted the surgery,” Bernd said, of Hoag’s Surgical Theater capabilities that allow surgeons to rehearse complex procedures using advanced 3D modeling to plan the most precise and effective approach.
Hoag’s participation in clinical trials also afforded Bernd access to Pritumumab, a novel immunotherapy treatment that holds promise for glioblastoma. Bernd has been impressed with the advanced offerings at Hoag and with the compassionate care he received.
“At Hoag, everyone is very knowledgeable, very human,” he said. “Dr. [Jose] Carrillo, my neuro-oncologist, is very helpful. Any time that I have a question, I can ask Dr. Carrillo and he will answer it. He encouraged me to stay active. You can tell that they really care about their patients.”
Dr. Louis was able to safely remove 98% of the tumor. To target the remaining portion, Bernd received chemotherapy with Dr. Carrillo and has been outfitted with Optune, a wearable device that creates low-intensity electric fields that might stop glioblastoma tumor cells from dividing and possibly destroys them. The device connects to arrays in Bernd’s head and is worn in a backpack, which Bernd has dubbed “Elmer Fudd.”
Elmer Fudd has gone everywhere Bernd has gone in the last several months, including hiking, biking and a visit to Germany to meet his first grandchild
“Her name is Elisa,” he said. “You could hug her all day long.”
Bernd is not completely through his treatment, and he says his memory, concentration and balance are still improving. He said doctors also noted a slight decrease in the vision in his left eye, but he doesn’t notice it. What he does focus on is the fact that he has been able to meet every goal on his list.
Meeting his new granddaughter, skiing, backpacking with his family.
“After a year, I sent Dr. Louis a thank you note,” Bernd said. “He told me I made his day. I told him, ‘You made my year.’”

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Hoag offers the full complement of breast screening technologies, including breast tomosynthesis (3D mammography) and comprehensive breast surgical offerings including oncoplastic surgery and the full gamut of reconstructive options.
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Hoag Breast Center is the first and only breast center in Orange County to be designated as a Certified Quality Breast Center of Excellence™. Hoag offers the full complement of breast screening technologies, including breast tomosynthesis (3D mammography) and comprehensive breast surgical offerings including oncoplastic surgery and the full gamut of reconstructive options.
Named by Women’s Choice Award® as one of America’s Best Hospitals for Obstetrics for 2014-2023. Hoag offers dedicated OB services for perinatology, neonatology, OB intensivist and OB hospitalist/laborist.
Hoag has become the first hospital on the West Coast to achieve dual accreditation as a Center of Excellence in Continence Care for Women, recognized by Surgical Review Corporation (SRC) and National Association for Continence (NAFC) for providing the highest quality of care and patient safety.
Hoag has received the prestigious SOAP Center of Excellence (COE) designation by the Society for Obstetric Anesthesia and Perinatology (SOAP).
The Women’s Choice Award has designated Hoag as top 1% of Mammography Imaging Nationwide in 2023-2024.
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