Grand Traverse Internal and Family Medicine, P.C. is committed to providing each patient with an exceptional level of care and attention. At Grand Traverse Internists, we enjoy developing an on-going relationship with our patients. Our dedicated staff works together as a patient care team to provide high-quality comprehensive healthcare. We are certified by Blue Cross Blue Shield of Michigan as a Patient-Centered Medical Home (PCMH). This is an advanced healthcare model with PCMH status being awarded to practices that demonstrate these newer healthcare standards.




We are conveniently located just west of Downtown Traverse City, only blocks from Munson Medical Center. We offer extended hours and accept same-day appointments based on availability.


To schedule an appointment, please call: 231-935-0850 and press 0. 


Grand Traverse Internal and Family Medicine, PC

Your Patient Centered Medical Home

 Marci Bultemeier, D.O.

Dr Bultemeier is a graduate of the University of Health Sciences, College of Osteopathic Medicine, Kansas City.  She has practiced at Grand Traverse Internal and Family Medicine since 2001.

About Us

Call Us:  231-935-0850

David Oakley, M.D.

Dr. Oakley graduated from Michigan State University College of Human Medicine.  He has practiced at Grand Traverse Internal and Family Medicine since 1995.

Charles Klettner, M.D.

​Dr Klettner graduated from Wayne State University School of Medicine.  He has practiced at Grand Traverse Internal and Family Medicine since 1997.

​​​Mary Douglas, PA-C​

Mary graduated from Wayne State University with a Masters of Science, Physician Assistant Studies and is certified through the National Commission on Certification of Physician Assistants. She joined Grand Traverse Internal and Family Medicine in 2014.

​​Elizabeth Hughes, D.O.

​Family Medicine

Dr. Hughes graduated from Michigan State University College of Osteopathic Medicine in 2001.  ​She has practiced at Grand Traverse Internal and Family Medicine since 2017.

Accepting new patients 12 years old and up.  Call today

​Adrienne  Wagner, D.O. 

Family Medicine

Dr. Wagner graduated from Kirksville College of Osteopathic Medicine and completed her residency at Munson Medical Center's Family Medicine Residency Program. She has practiced at Grand Traverse Internal and Family Medicine since 2016. 

​Accepting new patients 12 years old and up.   Call today

Judith Yates, M.D.

Dr Yates graduated from the Stanford University School of Medicine.  She has practiced at Grand Traverse Internal and Family Medicine since 1986.

​​​​​Tammy Hollenbeck, Practice Manager

Tammy Joined our clinic in 2016.  Tammy has worked in the medical field for over 30 years gaining experience in all areas of the medical office.   She passionately believes in providing each patient with an exceptional level of care and attention while creating a compassionate work environment that provides exceptional service and education.