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Mith Mitch Leng, MD

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My department:
Family Medicine
My specialty:
Family Medicine

My provider affiliation:
All Kaiser Permanente Physicians and Surgeons

I speak: English

My gender: Male

Where I practice

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  • Emergency service
  • Urgent care services
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  • Pharmacy services
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About me

I was born in the beautiful tropical country side of Cambodia surrounded by a loving extended family and friends. This peaceful lifestyle came to an end where, as a young boy, endured and survived the horrible and genocide of the Khmer Rouge. At the age of 19 I left Cambodia and spent almost two years in Thailand where I took the opportunity to work as a surgical room assistant . I witnessed many people who were severely wounded from gun shots and mine explosions. It was at that time that my desire to pursue a career in the medical field coalesced. After arriving in Portland, Oregon in 1983, I was anxious to begin my formal education at Portland Community College, where I earned an associate degree in medical laboratory technology. I soon found work at the Nichols Institute (now Quest Diagnostics) and during the next four years I pursued my BA degree in Science at Portland State University. I also met and married my wife Janet. Our eldest son was born in 1989 and his birth brought much joy and happiness to my life. I started medical school at Oregon Health and Science University (OHSU) in 1990. Our second son was born during my second year of medical school and that brought me double happiness. Upon graduation from medical school, we moved to Northern California in order to complete three years of Family Medicine residency. We remained in Northern California where I built and established a urgent care medical practice that was combined with primary care and industrial medicine. I enjoyed the growing practice and five other internal medicine physicians working with small community of Tracy California. Shortly after our eldest son graduated from high school, we knew that it was time to return home to my family in the Northwest, so we returned to Portland in 2007, and I joined Kaiser Permanente Northwest where I continue to grow personally and professionally.

About my practice

It is my privilege to be among my colleagues and staff at Mt Scott clinic. I provide care to patients of all ages from birth to end of life. My goal is to provide the best quality care possible, and I will bring with me more than 14 years of experience ensuring high standards of culturally competent care for a wide variety of patients with diverse needs, from preventive medicine to acute and chronic illness.

How I thrive

My wife and I have enjoyed supporting our sons in their endeavors such as attending, academic and sporting events. They are now out of high school and beginning their initial education at the university. We now have more time to travel the world to visit my homeland of Cambodia. We also enjoy travels to Europe and discover new cultures. I feel joy and happiness when I participate in church and community activities. I also enjoy landscape and gardening in my yard. During the winter months I enjoy reading and writing my life history.

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My office

Referral requirements

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Languages spoken by medical staff

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Medical Groups, Plans, and Networks

Northwest Permanente Physicians and Surgeons, PC

Family Medicine
9800 Se Sunnyside Rd, Clackamas, OR 97015
List Header Plans Accepted

This provider is available in all Kaiser Permanente networks (Classic, Classic Complete, Classic Complete + Dental Choice, Added Choice, Added Choice + Dental Choice, PPO Plus, PPO Plus + Dental Choice) and accepts all health plans in each network. Learn more.

Contact information

  • Advice Nurse
  • 1-800-813-2000 (toll free)
  • Information
  • 503-652-2880
  • Information (TTY)
  • 1-800-735-2900 (toll-free TTY for the hearing/speech impaired)

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My training, certifications & licensing

Medical school

Oregon Health Sciences University School of Medicine
Portland , OR

Board certification

Family Medicine

American Board of Family Medicine

To verify board certification for an individual practitioner, please visit the American Board of Medical Specialties, the American Medical Association, or the American Osteopathic Association websites.

Medical training

Family Practice

San Joaquin General Hospital
Stockton , CA

Joined Permanente Medical Group


Provider ID


License information

Look up this provider’s credentials at the Washington State Department of Health website.

Look up this provider’s credentials at the Oregon Medical Board website


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My hospitals

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To find:

  • a provider’s office hours, search our facility directory
  • providers in your plan or accepting new patients, call 1-800-813-2000 (toll free) or 711 (TTY for the hearing/speech impaired)

The information in this online directory is updated at least monthly. The availability of physicians, hospitals, providers and services may change. For the most up-to-date information, please contact Member Services at 1-800-813-2000. Information about practitioners is provided to us by the practitioners or is obtained as part of the credentialing process.

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 KFHP (Kaiser Foundation Health Plan) products and lines of business. 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.

Learn more about provider selection criteria and tiered network criteria.

Kaiser Permanente uses the same geographic distribution consideration to select hospitals in Marketplace plans as it does for all other KFHP products and lines of business. Accessibility of medical offices and medical centers in this directory: All Kaiser Permanente facilities are accessible to members.

Help in your language: Interpreter services, including ASL (American Sign Language), are available during business hours at no additional cost to members. Many of our doctors also speak more than one language. Call 1-800-324-8010 (toll free), or 1-800-813-2000 (toll free), or 711 (TTY).

Questions? Please call Membership Services from 8 a.m. to 6 p.m., 7 days a week (except major holidays).

  • Portland: 503-813-2000
  • All other areas: 1-800-813-2000 (toll free) or 711 (TTY)

For language interpretation services: 1-800-324-8010 (toll free).

For specific license information, including malpractice history and disciplinary actions, you can call the Oregon Medical Board at 971-673-2700 or the Washington State Department of Health at 360-236-4700.

Referrals to affiliated community physicians/providers in Oregon and Washington

Affiliated community physicians/providers are not part of the NWPMG (Northwest Permanente Medical Group). They are physicians/providers credentialed by Kaiser Foundation Health Plan of the Northwest and/or who have a contract with the NWPMG.

If your NWPMG physician decides that you require covered services not available internally from an NWPMG physician, he or she may refer you to an affiliated community physician/provider. You must have a written, authorized referral from Kaiser Permanente in order to receive a covered service from an affiliated community physician/provider.

Referrals to affiliated community dentists in Oregon and Washington

Affiliated community dentists are not part of PDA (Permanente Dental Associates). They are dentists credentialed by PDA for Kaiser Foundation Health Plan of the Northwest, and they have a contract with PDA.

If your PDA dentist decides that you require covered services not available internally from a PDA dentist, he or she may refer you to an affiliated community dentist. You must have a written, authorized referral from Kaiser Permanente in order to receive a covered service from an affiliated community dentist.

If you would like to report an error in provider or facility information, call Member Services at 1-800-813-2000 or contact the web manager.

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