Caleb Hsieh, MD

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Torrance, CA
Caleb Hsieh, MD

Dr. Caleb Hsieh (pronounced Shay) is a pulmonary, critical care and sleep medicine physician who practices in Torrance. Dr. Hsieh obtained…

He sees patients with a wide range of conditions, from asthma and COPD to sleep apnea and insomnia. He works to explain and translate evidence-based medicine to patients in a way that empowers them to make informed decisions. He is triple board-certified in internal medicine, pulmonary medicine, and critical care, and is board-eligible for sleep medicine.

08/04/2026

UCLA Health is proud to be named by U.S. News & World Report for the 37th consecutive year to the Honor Roll of the 20 Best Hospitals in the Nation, including being ranked #1 in California and Los Angeles, and one of Newsweek's World's Best Hospitals.

These honors belong to our amazing care teams, who show up for our patients every day.

07/26/2026

UCLA Health celebrates 100 years of patient-centered care for the Santa Monica community. From lifesaving emergency care to advanced specialty services, patients and their families have turned to us for innovative and compassionate care. Check out the timeline showcasing some of our biggest milestones.

07/23/2026

Extra oxygen can provide powerful support for serious burns. Hyperbaric oxygen therapy (HBOT) is one of the advanced treatments available for eligible patients. It helps the body deliver more oxygen to injured tissues. It reduces swelling, speeds up healing and improves recovery.

07/02/2026

From 4th of July fireworks to backyard grilling and camping, summer is full of outdoor fun. A few precautions can help prevent burns. And if a serious burn happens, the UCLA Health Regional Burn Center offers the highest level of care available.

07/01/2026

Throughout Pride Month, UCLA Health was proud to participate in Pride parades and events across the region, celebrating the LGBTQ+ community and our commitment to inclusion, belonging and well-being for all. 🌈

06/30/2026

Many men experience changes in energy, vitality and sexual health as they age. The good news? Some symptoms may be treatable.

Learn how UCLA Health urologists are helping men navigate common age-related concerns with personalized, evidence-based care.

06/25/2026

Behind every World Cup match and Olympic event, the UCLA Olympic Analytical Laboratory helps protect the integrity of sports. It’s one of only two World Anti-Doping Agency-accredited labs in the U.S., conducting 45,000 tests annually.

Image Descriptions:
Slide 1
Soccer ball flying across a field with colorful motion trails.
TEXT:
GooOAL
UCLA Olympic Analytical Laboratory Is Drug-Testing World Cup Players

Slide 2
A lab technician operates an analytical testing instrument.
TEXT:
One of Two Labs in the USA Trusted by FIFA
As 1,248 players from 48 countries compete in the FIFA World Cup, scientists at UCLA's Olympic Analytical Laboratory (OAL) are working behind the scenes, ensuring competition is safe and fair.

Slide 3
A scientist handles sample tubes in a lab rack.
TEXT:
Results in 48 Hours
Most sports drug-testing results are reported in about 20 days. For the FIFA World Cup? Results must be delivered within 48 hours.

Slide 4
A lab scientist organizes sample vials for testing, and a researcher uses a precision micropipette to transfer liquid samples.
TEXT:
Tracking 10x More Substances Than 35 Years Ago
In 1990, scientists monitored roughly 100 prohibited substances. Today, advanced analytical technology is used to track nearly 1,000 substances and metabolites.

Slide 5
A set of sealed sample containers is prepared for analysis.
TEXT:
Every sample is anonymous
Samples arrive identified only by a number. Scientists never know the athlete’s name, their team or their country, ensuring objective, unbiased testing.

Slide 6
A scientist reviews data while a researcher prepares samples using a micropipette.
TEXT:
Trusted on the Global Stage
For decades, UCLA's OAL has supported major sports organizations, including the Olympic Games, FIFA World Cup, NFL, MLB and NCAA, helping ensure competitions are safe and fair.

Slide 7
Large analytical instrument and other laboratory equipment in the OAL.
TEXT:
From the World Cup to the Olympics
After the 2026 FIFA World Cup, UCLA's OAL prepares for its next global challenge, the 2028 Olympic Games in Los Angeles.

06/19/2026

On June 19, we observe Juneteenth, commemorating the emancipation of enslaved African Americans and honoring the resilience, achievements and enduring impact of Black Americans.

At UCLA Health, we recognize that understanding this history is an important part of building a healthier and more equitable future. As we celebrate the rich cultural heritage and contributions of Black communities, let us also reflect on the ongoing pursuit of justice, opportunity and well-being for all. Happy

Image Description:
Stylized side profiles in red, green, yellow, blue and black are layered together, representing diversity, community and shared history. A cream-colored panel on the right displays the message “Celebrating Juneteenth” and “Freedom Day.” The graphic commemorates Juneteenth and celebrates freedom, resilience and the contributions of Black Americans.

06/10/2026

UCLA Health has one of the country’s top programs for solid-organ transplants. We continue to lead the way with innovations including a kidney voucher program, the first in-human bladder transplant and more.

Image Descriptions:

Slide 1:
A surgery team works on a patient.
Text: 4 life-changing transplant treatments pioneered by UCLA Health

Slide 2:
The donor, sibling and the stranger who received the donated kidney.
Text: Dr. Jeffrey Veale created the first kidney voucher program, now used by 100+ transplant centers nationwide through the National Kidney Registry. It lets living donors give a kidney at a convenient time while securing a future transplant for someone they love.
When Clay Garcelli donated to a stranger, Sonya Glover, it helped his younger brother Carter receive a voucher for a future transplant.

Slide 3:
Image of stem cells.
Text: UCLA Health performed the first retroactive immune tolerance procedure. One year following kidney transplantation, the donor’s stem cells were infused into the recipient so that the recipient’s body would recognize the donor’s kidney as its own. This removes the need for immunosuppression medications.

Slide 4:
Graphic representation of heart and lungs.
Text: UCLA Health’s Dr. Abbas Ardehali pioneered a new way to transport donor hearts and lungs instead of using traditional near-freezing storage. This technique keeps organs warm, beating and active, which helps preserve them better for transplant.

Slide 5:
Team performing transplant surgery.
Text: In 2025, UCLA Health performed the world’s first in-human bladder transplant, led by Dr. Nima Nassiri. He spent more than four years developing the complex surgical technique and hopes to do more bladder transplants soon.

Slide 6:
Branded graphic.
Text: Keep on believing it's possible

06/05/2026

UCLA’s groundbreaking longevity research was showcased by a panel of experts. Dr. Thomas Rando, director of the UCLA Broad Stem Cell Research Center, was a key speaker and revealed some of their latest advances.

Image Descriptions:
1. Image of Longevity Research panel on stage at event showing Dr. Rando speaking
TEXT: Longevity Research panel reveals how UCLA is resetting the aging clock
2. Image of lab researcher holding dish and dropper
TEXT: UCLA’s exciting work isn’t about living forever
Image of man in backyard watering his garden
TEXT: The goal is to understand how we age then use that knowledge to delay age-related disease.
3. Image of two researchers collaborating in a laboratory
TEXT: Biological age tools
UCLA researchers are using DNA-based clocks to measure how fast the body is aging. This could help them know sooner whether a treatment is working.
4. Microscopic images of mouse muscle tissue
TEXT: Microscopic images of regenerated mouse muscles transplanted with muscle stem cells (green) from old mice that have high levels of glutathione (left) and low levels of glutathione (right). Muscle stem cells with high glutathione levels are much more effective at contributing to new muscle tissue.
TEXT: Stem-cell rejuvenation
Dr. Rando also described work showing that old stem cells and tissues aren’t set forever and can sometimes be made to act younger.
5. Microscopic images comparing rejuvenated vs. young muscle tissue
TEXT: Dr. Rando’s lab at UCLA showed that young blood can rejuvenate old muscle tissue in mice (left) so that it becomes more like young muscle tissue (right).
TEXT: Young blood
UCLA experiments show that when blood from a young source is shared with aging blood, it can make old tissues look and function like young ones.
6. Graphic of DNA strand
TEXT: Epigenetic reprogramming
With reprogramming, certain genes have been used to rejuvenate old cells and tissues. The research is resetting the aging clock without changing the DNA itself.
7. Image of older woman running on a trail
Microscopic photography of cells
TEXT: Immunofluorescence of blood and smooth muscle cells
TEXT: Exercise-boosted blood
Dr. Rando’s lab found that exercise sends signals through the blood that improves tissue repair and overall health.
8. Image of Dr. Thomas Rando speaking at the Longevity Research event
TEXT: “Longevity is not just about living longer, but living healthier longer.” — Dr. Thomas Rando
9. Branded graphic
TEXT: Keep on believing it’s possible

Address

3701 Skypark Drive, Suite 200
Torrance, CA
90505

Telephone

+13103788900

Website

https://www.uclahealth.org/providers/caleb-hsieh?utm_source=ExtNet&utm_medium=Yext

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