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Katherine Manasson, MD
Practice accepting new patients.

Katherine Manasson, MD

(949) 348-1085
Primary Specialties
  • Internal Medicine
Medical Groups & Affiliations
  • Mission Hospital Affiliated Physicians
  • Additional Languages Spoken
    English, Russian

Primary Office

26732 Crown Valley Pkwy.
Suite 507
Mission Viejo, CA 92691
(949) 348-1085
(949) 348-1087
Mon 9 a.m. - 5 p.m.
Tue 8 a.m. - 5 p.m.
Wed 8 a.m. - 5 p.m.
Thu 8 a.m. - 5 p.m.
Fri 9 a.m. - 2 p.m.
Web Page:
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Physician Bio

My professional approach includes preventive care, patient education, and individual treatment planning based on the latest achievements in medicine. I encourage patients to actively participate in their own treatment selection process.

It is important to take the time to discuss problems with a patient, so we can work together toward a mutually agreeable decision.

Family tradition.

listening to classical music, reading biography and popular science books, and playing tennis.


American Board of Internal Medicine

Areas of Expertise

Diabetes, hypertension, women's health.

Areas of Interest

Internal Medicine

Insurance ID Numbers

Aetna: *276778
Blue Cross: *0XL079
Blue Shield: *00A615940
CIGNA: 8153082010
CIGNA Select: 8153082014
Health Net: 3207074981
Health Net Senior: 5270074981
SCAN: 955-23132
United Healthcare: *0183520058

*Provider ID is the same for both HMO and Medicare Advantage Plans