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Mark Adam Lassoff, MD

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My specialty:

My provider affiliation:
Kaiser Permanente provider

I speak: English

My gender: Male

Where I practice

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About me

Hello. Thanks for checking out my Web page, and taking some time to learn more about my practice. I believe that treating the whole patient goes a long way to help improve a patient's overall health. I look forward to becoming a partner with you to care for your health.


I grew up on the East Coast (Pennsylvania and New Jersey). I attended the University of Michigan for undergraduate studies, and returned to New Jersey to get my MBA/MPH in health care organization and administration. I went on to earn my medical degree at New Jersey Medical School (now known as Rutgers New Jersey Medical School). After spending most of my life on the East Coast and in the Midwest, I decided it was time for a change. I moved to Los Angeles, where I did my urology residency training at the University of Southern California. I completed a fellowship in minimally invasive urology, focusing on urinary tract stones and some laparoscopy and robotics, and became board certified in 2013.

About my practice

I found my dream job here at Kaiser Permanente Los Angeles Medical Center, where I can focus my practice, as well as educate and train future urologists. My practice is focused mainly on urinary tract stone disease diagnosis, treatment, and prevention. In addition to stones, I also treat a variety of general urologic diseases, including enlarged prostate, also known as benign prostatic hyperplasia, or BPH. I also diagnose and care for patients with urologic cancers such as bladder and prostate.

How I thrive

I try to lead an active a lifestyle. I grew up playing just about every sport, and still try to participate when I can. I spend much of my free time playing with my two daughters: going to the beach, pool, parks, etc. When I have some down time, I love to kick back, relax, watch TV or movies, or read. I am a huge sports and pop culture buff, and avid Michigan and Philly sports fan.

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My office

Languages spoken by medical staff

Help is available in your language. Learn more.

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My provider type

Physicians and Surgeons

Medical groups and plans

Southern California Permanente Medical Group

List Header Plans Accepted
  • Exclusive Provider Organization (EPO)
  • HMO
  • Medi-Cal Managed Care
  • Point-of-Service Plan (POS)
  • Senior Advantage/Medicare Cost
Urology Department
4900 W Sunset Blvd, Los Angeles, CA 90027

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My training, certifications and licensing

Medical school

University of Medicine and Dentistry of New Jersey
Newark , NJ

Board certification


American Board of Urology

Medical training



LAC+USC Medical Center
Los Angeles , CA



Kenneth Norris Jr Cancer Hospital and Research Institute
Los Angeles , CA


Minimally Invasive

Cedars-Sinai Medical Center
Los Angeles , CA



LAC+USC Medical Center
Los Angeles , CA

Joined Permanente Medical Group


Active license information

License number


License type


License issuing state


National Provider Identifier (NPI)

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My hospitals

All Kaiser Permanente physicians and podiatrists have admitting privileges or the ability to refer patients to our plan hospitals. Admitting privileges of other providers may vary by plan and facility. Contact your plan administrator for details.

4867 W Sunset Blvd, Los Angeles, CA 90027

I have admitting privileges at this hospital.

Setting the standard: Measuring care quality in our hospitals(PDF)

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The information in this online directory is updated periodically. The availability of physicians, hospitals, providers, and services may change. Information about a practitioner is provided to us by the practitioner or is obtained as part of the credentialing process. If you have questions, please call us at 1-800-464-4000 (toll free). For the hearing and speech impaired: 1-800-464-4000 (toll free) or TTY 711 (toll free). You can also call the Medical Board of California at 916-263-2382, or visit their website.

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Kaiser Permanente enrollees have full and equal access to covered services, including enrollees with disabilities as required under the Federal Americans with Disabilities Act of 1990 and Section 504 of the Rehabilitation Act of 1973.

Kaiser Permanente uses the same quality, member experience, or cost-related measures to select practitioners and facilities in Marketplace Silver-tier plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business.The measures may include, but are not limited to, HEDIS/CAHPS performance, member/patient complaints, patient safety scores, hospital quality measures, and geographic need. Members enrolled in KFHP Marketplace plans have access to all professional, institutional and ancillary health care providers who participate in KFHP plans’ contracted provider network, in accordance with the terms of members’ KFHP plan of coverage. All Kaiser Permanente Medical Group physicians and network physicians are subject to the same quality review processes and certifications.
Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other Kaiser Foundation Health Plan (KFHP) products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.


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