Nathan Chase, M.D.

A Michigan State University and Wayne State University Medical School graduate, Dr. Chase completed his residency at Sinai Hospital of Detroit from 1984 to 1987. He came to Clarkston in 1987 and continues to reside there with his wife and three children. Dr. Chase has been active in the Clarkston community where he has been involved in a number of different programs in the Clarkston schools. He is also an active member of Calvary Evangelical Lutheran Church where he has served on the church council and has been very involved in their drama program. In his spare time he enjoys spending time with his family, golf, playing volleyball and gourmet cooking.

Professionally, Dr. Chase has an interest in primary care Internal Medicine with an emphasis in cardiovascular disease. He is board certified in Internal Medicine and has supervised and trained medical residents for St. Joseph Mercy Hospital. Dr. Chase has also worked with medical students from Wayne State University Medical School where he held the position of Assistant Professor of Medicine. He has a passion for end of life care and has served as the Medical Director for Home and Hospice Advantage for the past 3 years.

Dr. Chase views the doctor patient relationship as a partnership. "Open and honest communication is one of the main keys to providing excellent medical care." He has a strong passion for helping others and providing a safe environment where people can discuss a variety of issues affecting their health.

Rosa Mirijanian, M.D.

Dr. Mirijanian graduated Magna Cum Lade from State Medical College in Armenia where she practiced internal medicine for nine years prior to immigrating to the United States. She completed her residency at St. Joseph Mercy Hospital in Pontiac from 1983 to 1986 and has been practicing in Clarkston since then.

Dr. Mirijanian lives in Clarkston with her son, daughter-in-law and grandson. She has a daughter who has a Doctorate in Physical Chemistry and presently works for the NIH. Dr. Mirijanian enjoys classical music and art, and loves going to the opera. In her spare time she enjoys cooking and gardening. Dr. Mirijanian's journey as a physician has been filled with multiple opportunities in teaching as well. She supervised and trained medical residents for St. Joseph Mercy Hospital and was an Assistant Professor at Wayne State University Medical School. In conjunction with her work at Clarkston Internal Medicine she also worked at the Oakland County Mental Health Department and was the medical director for the research on Fragile X Syndrome. The success of the program was recognized in the Oakland Press.

Having practiced medicine for more than 30 years, Dr. Mirijanian is a firm believer that a passion to help others, honesty and integrity are the primary components that make a successful physician. One of her main goals as an internal medicine physician is to promote preventative medicine that focuses on cardiovascular disease, cholesterol, high blood pressure and smoking cessation. As a woman and physician she supports woman's health issues, especially breast and genital cancers. She enjoys being a member of this strong medical team in the Clarkston Community and hopes to serve the community for many years to come. Dr. Mirijanian is accepting new patients.

Bashar Okka, M.D.

A native of Syria, Dr. Okka completed his residency at St. Joseph Mercy Oakland in Pontiac, Michigan, and joined Clarkston Internal Medicine in 1998. With a special interest in inpatient care and cardiovascular disease, he has an extended practice that includes practicing as a hospitalist treating other physicians' patients.

Dr. Okka comes from a family of physicians who are committed to providing excellent medical care to their local communities. His father and brothers are all board certified practicing physicians and Dr. Okka continues this family tradition. His caring personality and passion to provide the best health care available is widely known by his patients.

A resident of Oakland County with his wife, and three children attending an Oakland County school, Dr. Okka has a strong sense of community and is currently accepting new patients.

Tracey Wilkerson, ANP-BC

Tracey Wilkerson is a board certified Adult Nurse Practitioner with a specialty in primary care. NurseShe received a Masters of Science in Nursing in 2007 from Wayne State University. She has practiced in a variety of areas as a nurse practitioner including emergency room, urgent care and internal medicine. She is credentialed at St. Joseph Mercy Oakland in Pontiac where she practices as a hospitalist.

Tracey has been a Registered Nurse since 1998, after receiving her Bachelors of Science in Nursing from Oakland University. She accumulated 17 years of clinical nursing experience in the acute and intensive care setting. Tracey takes pride in contributing to the nursing profession through teaching. She has served as adjunct faculty at Oakland Community College and a preceptor to Graduate Nursing students for area universities.

Tracey'scope of practice encompasses health promotion, disease prevention, diagnosis and treatment of common and complex problems. She is passionate about health education and health counseling. Tracey strives to develop a trusting and caring relationship with each of her patients and help with positive health choices. She is excited to be part of Clarkston Internal Medicine, and is enthusiastic to quality provide care to the community.

Tracey currently lives in Clarkston. In her free time she enjoys traveling, yoga and photography. Yet, most of all she enjoys spending time with her husband and two children.