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License & Identifications

A medical license is required for a doctor to practice medicine in a particular state. Requirements vary by state but most require, at a minimum, post-graduate training in the doctor’s specific specialty. An NPI number is a national identifier unique to an individual health care provider and is managed by the Center for Medicare & Medicaid Services (CMS).

Patient Reviews

Patient comments (6)

The overall average patient rating of Dr. John Bartnik is Good. Dr. Bartnik has been reviewed by 25 patients who have provided 6 comments. The rating is 3.5 out of 5 stars.

Patient Ratings
Ease of Appointment 4.1
Promptness 4.0
Courteous Staff 3.7
Accurate Diagnosis 3.7
Bedside Manner 3.3
Spends Time with Me 3.2
Follows Up After Visit 3.2

Specialties & Research

Dr. John Bartnik, MD is board certified in Hematology and Medical Oncology.

  • He has special expertise in 12 areas:
  • Acute Myeloid Leukemia
  • Adult T-Cell Leukemia-Lymphoma
  • Cancer
  • Chronic B-Cell Lymphocytic Leukemia
  • Chronic Myeloid Leukemia
  • Chronic Myelomonocytic Leukemia
  • Clinical Research
  • Deep Vein Thrombosis
  • Epidemiology
  • Hepatitis C
  • Leukemia
  • Lymphoma

Education & Awards

Dr. Bartnik graduated from Jagiellonian University Medical College, Krakow.


Dr. Bartnik has 21 hospital affiliations:

  • St. Mary Mercy Hospital 
  • Mount Clemens Regional Medical Center 


  • Polish
  • Russian

> > > > Dr. John Bartnik, MD

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Additional Information
Dr. John K Bartnik MD is a male Hematologist, has 29 years of experience and practices in Hematology and Medical Oncology.
Where does Dr. John K. Bartnik practice?
Dr. John Bartnik has 2 office locations.
Dr. John Bartnik practices Hematology and Medical Oncology near Saginaw, MI.
Additional practice locations include: Alma, MI.
See Saginaw Hematologists and Saginaw Oncologists.