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Nikolaus King, AG-ACNP

Nikolaus King, AG-ACNP

Meet Nikolaus King, a Board Certified Adult-Gerontology Acute Care Nurse Practitioner with
14 years of professional experience in critical care, nephrology, and wound management.

He brought a diverse background, applying multidisciplinary clinical skills to infectious diseases with acute and chronic wound management when he joined the clinic in 2025.

“Healthcare in the current day and age can be very intimidating. My hope is for patients to know that they have a provider who listens to their specific health concerns and goals of care.”

Nick is a strong advocate for your healthcare decisions. He is without bias and is persistently focused on quality of life. Nick believes we are all individuals who deserve access to available resources to provide, sustain, and maintain a healthy existence.

Nikolaus is a born and raised Memphis native, who received his BSN from the University of Memphis in 2012. After some time traveling and gaining clinical experience, he decided to return to academia and obtained his MSN from Vanderbilt University with a specialty focus in Adult-Gerontology Acute Care. Nikolaus enjoys talking with his patients and getting to know them as individuals. He is a proud girl dad who loves pizza, documentaries, stand up comedy, and basketball. Anchors Down!! Go Tigers Go!!

Brandy Rose, PT, DPT, CWS

Brandy Rose has a doctorate in physical therapy and is board-certified in wound care.

Brandy began her career in hospital acute care. She is experienced in skilled nursing and rehab. However, her niche is outpatient care. She loves to heal wounds, including complex wounds and difficult-to-heal wounds.

Brandy works with the patient to comprise the optimal team and will work with various providers in the city when necessary. She is part of an accomplished team that creates a multidisciplinary unit to heal wounds and have the patient return to the community for optimal function.

Brandy loves teaching patients with ambulation, offloading, edema management, and compression therapy. Her heart is to get patients back into the community, functioning again, and living their best life.

Brandy’s husband is a teacher and coach. Together they have two children. Brandy loves being here in Memphis.

Ana Maria Concepciōn, MD

Ana Maria Concepciōn, MD

Dr. Ana Maria Concepciōn has been an infectious disease physician for almost 27 years. She finds being an infectious disease doctor interesting. Dr. Concepciōn enjoys helping her patients and working with other great physicians.

When she is not working, Dr. Concepciōn loves to garden, read, watch movies, and listen to music.

Dr. Concepciōn lives in Memphis, TN. During the summer months, she is learning the process of indoor gardening due to the hot Memphis climate being much greater than any other place she has resided in.

Chiemeziem Nwanyanwu, MD

Chiemeziem Nwanyanwu, MD

Dr. Chiemeziem Nwanyanwu has been a physician for 16 years and has specialized in infectious diseases since 2021. She believes it is an honor to be an infectious disease doctor. Dr. Nwanyanwu finds satisfaction in evaluating patients with infectious diseases and assisting patients with an optimal outcome.

When Dr. Nwanyanwu is not working in the hospital, she enjoys spending time with her children and her husband. In addition, she relishes time with her extended family members and her church family. Dr. Nwanyanwu simply loves being with people.

For hobbies, she thoroughly enjoys reading novels, and fiction novels in particular, as they provide an escape from the real world. Singing is another passion that gives her great joy.

Dr. Nwanyanwu feels privileged to serve Memphis and our group of physicians. She finds the patients and people she works with to be wonderful people. She believes it is evident our staff genuinely cares for their patients and works together to ensure patients receive the best care.

Dr. Imad omer.

Imad Omer, MD

Dr. Imad Omer, the third physician to join the group in 2002, received his undergraduate studies in chemistry at the University of Arkansas in Fayetteville from which he graduated Magna Cum Laude and as a member of Phi Beta Kappa.

He continued with his medical training at the University of Arkansas for Medical Sciences in Little Rock where he too won many awards.  He completed his post graduate internship in internal medicine at UAB and continued with a fellowship in infectious disease there where he won numerous awards for excellence in teaching.

Board certified in infectious disease in 2002, he currently serves as assistant professor for UTCHS.  Married to Saadia and father to three sons, Dr. Omer loves Arkansas football, attending his sons’ sporting events, fly fishing, and spending any spare time he has with his family.

Dr. Stephen Threlkeld.

Stephen Threlkeld, MD

Dr. Steve Threlkeld, the brother of Mike, joined him in practice in 1997.  Dr. Steve graduated magna cum laude from Rhodes College in Memphis where he was a member of Phi Beta Kappa.  

He attended medical school at the University of Alabama School of Medicine in Birmingham in 1990 from which he graduated with numerous awards for outstanding achievement.  In addition to an internal medicine residency at UAB, he did his post-graduate training at Harvard Medical School and Massachusetts General Hospital, where he received awards for clinical excellence.

Board certified in infectious disease in 1997 and now managing member of Threlkeld ID, Dr. Steve is currently President (2016) of the medical staff at Baptist Hospital – Memphis and serves as epidemiologist for the hospital and assistant professor for UTCHS.  Married to Ginger and father of two, Dr. Steve loves fishing and spending his spare time with his family. 

Dr. Michael Threlkeld.

Michael Threlkeld, MD

Dr. Mike Threlkeld, the founder of Threlkeld Infectious Disease, graduated from the University of Tennessee Center for the Health Sciences (UTCHS) with highest honors in 1983.  

His post-graduate training in internal medicine came at The Johns Hopkins Hospital in Maryland and his fellowship in infectious disease was at the University of Alabama – Birmingham.  He was board certified in infectious disease in 1988.  

In addition to serving as President of Threlkeld ID, he also holds the position of hospital epidemiologist at St. Francis Hospital in Memphis and is an assistant professor for the UTCHS program here.  Married to Susan, the father of two daughters, and an avid bird photographer, Dr. Mike travels around the world in search of the best images of birds that he can find.