Our Team


Our Physicians Our Advanced Practice Providers
Amy Copeland, PA-C Deborah Peck, PA-C
Matthew Cotant, M.D. Lauren Goedtel PA-C
Deepa Jagtap M.D. Sarah Mills, PA-C
Laura M. Nadeau, M.D Taylor Holtshouser, PA-C
Padmaja Venuturmilli, M.D. Rob DeMeester, PA-C
Martin Tapia-Postigo, M.D. Callie Seybert, PA-C
Rebecca Chacko, M.D.
Mohammed Ibrahim M.D, F.A.C.P Our Management
Yusuf Qamruzzaman, M.D. Tracy Messing, Office Manager

Our Physicians


Laura M. Nadeau, M.D.

Laura M. Nadeau, M.D.

Dr Nadeau graduated Magna Cum Laude from the University of Michigan with a degree in Chemical Engineering.  She then went to Case Western Reserve University Medical School in Cleveland, Ohio, where she received The Alfred S. Maschke Award for Excellence in the Art and Practice of Medicine.   Dr. Nadeau completed her internal medicine residency at University Hospitals of Cleveland in Ohio.  She remains Board Certified in Internal Medicine.  In addition, she completed her fellowship in hematology and oncology at The Ireland Cancer Center in Cleveland, Ohio, and remains board certified in both. Read More...

Matthew Cotant, M.D.

Matthew Cotant, M.D.

Matthew Cotant, M.D., is certified by the American Board of Internal Medicine and the subspecialty boards of medical oncology and hematology.

A graduate of Wayne State University School of Medicine in Detroit, Michigan, Dr. Cotant completed an internal medicine residency at Henry Ford Hospital in Detroit, Michigan.  He then completed both an Oncology and Hematology fellowship at Henry Ford Hospital, where he served as chief fellow during his final year. Read More...


Padmaja Venuturumilli, M.D

Laura M. Nadeau, M.D.

Padmaja Venuturumilli, M.D. has been practicing medicine for more than 20 years. Her vast and versatile experiences have included completion of a residency program in anesthesiology and working as an anesthesiologist for many years prior to moving to the US.

She is certified by the American Board of Internal Medicine and the sub-specialty boards of Medical Oncology.

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Martin Tapia-Postigo, M.D.

Laura M. Nadeau, M.D.

Martin Tapia Postigo M.D. is certified by the American Board of Internal Medicine and the subspecialty board of Medical Oncology.

Dr. Tapia is a graduate of Cayetano Heredia University School of Medicine in Lima, Peru. In addition he held clerkships at Johns Hopkins University School of Medicine in Baltimore, Maryland and The University of North Carolina School of Medicine at Chapel Hill.

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Deepa B. Jagtap, M.D.

Deepa B. Jagtap, M.D.

Dr.Jagtap graduated with honors from the Rajiv Gandhi University of Health Sciences, India. She then joined Michigan State University in East Lansing, Michigan for Internal Medicine residency. During her residency, she received several awards for excellence in Hematology/Oncology and  Infectious Disease. She remains Board Certified in Internal Medicine. In 2009, she joined Karmanos Cancer Institute/Wayne State University to pursue Hematology/Oncology fellowship.

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Mohammed Ibrahim, M.D.

Mohammed Ibrahim, MD graduated with honors from the P.S.G. Institute of Medical Sciences and Research, India. He completed his residency in Internal Medicine at William Beaumont Hospital in Royal Oak, Michigan. After his residency, he served as Attending Physician in the Department of Internal Medicine at Beaumont Hospital. During this time, he was actively engaged as a faculty member with the Internal Medicine Residency Program. He received the Fellowship of American College of Physicians (F.A.C.P) in 2012. He is board certified in Internal Medicine.

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Yusuf Qamruzzaman, M.D.

Dr. Yusuf Qamruzzaman is a long time Michigan resident, born and raised in Novi, MI. He attended University of Michigan for his undergraduate degree. He attended Wayne State University Medical school. He did his residency in internal medicine and fellowship in Hematology and Oncology at the University of Illinois in Chicago. He worked at Beaumont Hospital in Dearborn from 2013 until joining the practice in 2017.

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Rebecca Chacko, M.D.

Rebecca Chacko, M.D.

Dr. Chacko was born and raised in Ontario, Canada, she received her medical degree from St. George’s University. She completed her Internal Medicine residency at Beaumont Health in Royal Oak, Michigan and spent an additional year serving as the chief resident for the program. Dr. Chacko went on to complete her fellowship in hematology and medical oncology at Henry Ford Health in Detroit, Michigan. During her training, Dr. Chacko was engaged in medical research, presented at regional and international conferences and published several papers.

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Our Physicians Assistants

Rob DeMeester, PA-C

Rob DeMeester, PA-C, is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Rob graduated from the University of Michigan in Ann Arbor with a Bachelor of Science degree in Biology. He then completed his Masters of Physician Assistant Studies at Central Michigan University. Upon graduation, he was awarded Class of 2003 Most Outstanding Graduate by the Physician Assistant Program faculty. Read More...

Deborah Peck, PA-C

Deborah Peck, PA-C, is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Deborah graduated from Oakland University in Rochester Hills with a Bachelor of Science degree in Medical Laboratory Science. She then completed her Masters of Physician Assistant Studies at Wayne State University. Deborah has been practicing in Hematology and Oncology since graduation, including Karmanos Cancer Center in Detroit. Read More...

Sarah Mills, PA-C

Sarah Mills is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Sarah graduated from Wayne State University with a Bachelor of Science degree in Psychology Honors with a Health Science concentration. Following graduation, Sarah worked as a Certified Nurse Assistant. Sarah then completed her Masters of Science in Physician Assistant Studies at Wayne State University. Sarah practiced as a physician assistant in Internal Medicine at Providence Park Hospital prior to joining Hematology Oncology Consultants. Read More...


Lauren Goedtel, PA-C

Lauren Goedtel, PA-C is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Lauren graduated from Michigan State University with a Bachelor of Science degree in Dietetics. She completed a dietetic internship at Henry Ford Hospital in Detroit, MI. Then she worked at Port Huron Hospital as a registered dietitian and maintains her RD certification. Read More...


Amy Copeland, PA-C

Amy Copeland, PA-C is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Amy graduated from Michigan State University with a Bachelor of Science degree in Nutritional Science with a Health Promotion Specialization. She worked as a Certified Nursing Assistant at an assisted living facility during her undergraduate education. Read More...


Taylor Holtshouser PA-C

Taylor Holtshouser, PA-C is certified by National Commission of Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Taylor graduated from Michigan State University with a Bachelors of Science in Human Physiology in 2014. Between her time at MSU and pursuing her masters degree, she worked as a nursing assistant in Troy Beaumont’s Medical ICU. Read More...


Callie Seybert, PA-C

Callie Seybert PA-C, is certified by the National Commission on Certification for Physician Assistants and holds PA licensure in the state of Michigan.

Callie graduated from the University of Michigan in Ann Arbor with a Bachelor of Science degree in Microbiology. She worked as a medical assistant in a pediatric office before completing her Masters of Physician Assistant Studies from Ohio Dominican University. Callie practiced as a physician assistant in urgent care prior to joining Hematology Oncology Consultants. Read More...

Our Management

Tracy Messing, Office Manager

Laura M. Nadeau, M.D.

Tracy Messing has been with the practice since 2002.  She is responsible for human resources, managing the administrative side of the practice, and supervision of non-clinical employees.  Tracy received her MSA in Health Services Administration from Central Michigan University.  She is dedicated to seeing that patients’ needs are met in a professional and efficient manner.

Testimonial

Thank you for your attention to my problems - I feel confident in your hands that you will do the best possible to keep me healthy!