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Mehran Toosi, MD

Photo of Mehran Toosi, MD

My specialty:
Internal Medicine

My provider affiliation:
Kaiser Permanente provider

I speak: English, Farsi

My gender: Male


Find out about

Where I practice

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Available services
  • Emergency service
  • Urgent care services
  • After-hours services
  • Pharmacy services
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  • No after-hours services
  • No pharmacy services
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About me

Greetings, I am Dr. Toosi. I work as a hospitalist for Kaiser Permanente here at the Kaiser Permanente Antelope Valley Medical Offices. Hospitalists are a unique breed of medical detectives who diagnose problems of hospitalized patients and develop a treatment plan to help them regain their health and mobility. It is challenging work that I enjoy greatly.


I come from a family of physicians. My oldest brother is an oncologist in Iran, while another brother is a cardiologist here in America. I went to medical school in Mashhad, Iran, and served four years as a resident there. Then I became a general practitioner in a rural area of my homeland. I immigrated to the United States to further my education and professional experience. My first year in America was spent in Atlanta, Georgia, where I did medical research at Emory University. When I was accepted into the intern program at Coney Island Hospital in Brooklyn, my wife and I moved to New York. During my internship and residency at Coney Island, I gained new insights into internal medicine and became familiar with the remarkable technology available to assist physicians at most American hospitals. In 2011, my wife and I pulled up roots again and traveled to California to be closer to family and friends.

About my practice

Being a hospitalist is challenging, but I try to keep it simple. I always make myself available to members, often giving them my personal phone number so they can call with questions. I bring your best behavior to the bedside so I can determine how best to meet their needs. And I let members and their families gain trust in me by telling them what their options are so they can choose the best route to better health and happiness.

How I thrive

Tennis is my passion, but with two small children and a busy practice, I don’t get to play as often as I’d like. So I settle for a quick trip to the gym and an evening with my family. Occasionally you’ll find us on a day trip to one of Southern California’s many adventures. Perhaps when the kids are older, well be able venture a little further from home. I love road trips and would enjoy taking more of them.

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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
Internal Medicine Department
43112 N 15th St, Lancaster, CA 93534

Contact information

  • Advice/appointments/cancellations/messages
  • 1-833-574-2273 (1-833-KP4CARE) (toll free)
  • After-hours advice
  • 1-833-574-2273 (1-833-KP4CARE) (toll free)
  • California Relay Service
  • 711 (TTY for the hearing/speech impaired)

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My training, certifications and licensing

Medical school

Mashhad University of Medical Sciences & Health Services
Mashhad , Iran

Board certification

Internal Medicine

American Board of Internal Medicine

Medical training


Internal Medicine

Coney Island Hospital
Brooklyn , NY


Internal Medicine

Coney Island Hospital
Brooklyn , NY

Joined Permanente Medical Group


Active license information

License number


License type


License issuing state


National Provider Identifier (NPI)

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My hospitals

This information is not available at this time.

To find:

  • a provider's office hours, search our facility directory
  • providers in your plan or accepting new patients, call 1-800-464-4000 (toll free) or 711 (TTY for the hearing/speech impaired)

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.

We want to speak to you in the language that you’re most comfortable with when you call or visit us. Qualified interpreter services, including sign language, are available at no cost, 24 hours a day, 7 days a week during all hours of operations at all points of contact. We do not encourage the use of family, friends or minors as interpreters. Only the services of interpreters and qualified staff are used to provide language assistance. These may include bilingual providers, staff, and healthcare interpreters. In-person, telephone, video, and alternative modes of communication are available. Learn more about interpreter services

If you would like to report an error in provider or facility information, please contact us.

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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