Our providers

Nurse Practitioner

Y. Karen Lee, DNP, FNP-C, AGACNP-BC

• Doctor of Nursing Practice
• Board Certified Family Nurse Practitioner
• Board Certified Adult-Gerontology Acute Care Nurse Practitioner (AGACNP-BC)
• Certified Wound, Ostomy, Continence Nurse – Advanced Practice (CWOCN-AP), 2025

Karen Lee has cared for patients since 2001, when she began as a float pool nurse at Overland Park Regional Medical Center in Kansas, working across surgical, orthopedic, maternal-child and adult-geriatric psychiatry units before joining a hematology-oncology clinic in Seattle's Swedish Medical Center system and later specializing in IV therapy and vascular access. She earned her master's degree as a Family Nurse Practitioner from the University of Kansas Medical Center in 2008. After moving to the San Gabriel Valley to be closer to family, she practiced at CVS MinuteClinic and then in inpatient medicine at Garfield Medical Center in Monterey Park, where she supervised the critical care and maternal-child units and oversaw specialty programs in cardiovascular surgery, electrophysiology, neurology and stroke, neurosurgery and vascular surgery. She earned her Doctor of Nursing Practice from the California State University Fullerton, Los Angeles and Long Beach consortium in 2015, then became board certified as an Adult-Gerontology Acute Care Nurse Practitioner (AGACNP-BC) after completing post-graduate training in 2022, and in 2025 completed post-graduate certification as a Certified Wound, Ostomy, Continence Nurse – Advanced Practice (CWOCN-AP). At Harmony Medical, she brings this hospital and clinic experience to patients at home, in their facilities and by telehealth.

Languages

English, Mandarin

Board certifications

Family Nurse Practitioner (FNP-C); Adult-Gerontology Acute Care Nurse Practitioner (AGACNP-BC)

Doctorate

Doctor of Nursing Practice, CSU Fullerton, Los Angeles & Long Beach consortium (2015)

Master's degree

Family Nurse Practitioner, University of Kansas Medical Center (2008)

Post-graduate certification

Certified Wound, Ostomy, Continence Nurse – Advanced Practice (CWOCN-AP), 2025

Clinical experience

Nursing since 2001, including inpatient medicine and critical care

Medical Director

Ken D. Nguyen, MD

• Board Certified in Internal Medicine
• Board Certified in Gastroenterology
• Board Member & Secretary, Orion ACO

Dr. Nguyen is board certified in both Internal Medicine and Gastroenterology. As Medical Director, he oversees the clinical care our team provides. He also serves on the Board of Directors of Orion ACO as its Secretary.

Born in Vietnam, Dr. Nguyen immigrated to the United States with his family at a young age and grew up in the San Gabriel Valley, where he attended San Gabriel High School. He graduated cum laude from the University of California, San Diego with a B.S. in biochemistry and cell biology, and earned his medical degree from Boston University School of Medicine. He completed his internship and residency in internal medicine at Cedars-Sinai Medical Center in Los Angeles, followed by a fellowship in gastroenterology at the University of Texas Southwestern Medical Center in Dallas.

Languages

English, Vietnamese

Medical school

Boston University School of Medicine

Residency

Internal Medicine, Cedars-Sinai Medical Center

Fellowship

Gastroenterology, UT Southwestern Medical Center