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).
Learn more about Dr. Stephen Koehler:
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Specialties & Research
Dr. Stephen Koehler, MD is board certified in Internal Medicine, Hematology, and Medical Oncology.
Education & Awards
Dr. Koehler graduated from University of California at Irvine. He has 3 awards.
Dr. Koehler has 6 hospital affiliations:
- Garfield Medical Center
- Henry Mayo Newhall Memorial Hospital
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- Additional Information
- Dr. Stephen Charles Koehler MD is a male Internist, has 37 years of experience and practices in Internal Medicine, Hematology, and Medical Oncology.
- Where does Dr. Stephen C. Koehler practice?
- Dr. Stephen Koehler has 3 office locations.
Dr. Stephen Koehler practices Internal Medicine, Hematology, and Medical Oncology near Duarte, CA.
Additional practice locations include: South Pasadena, CA and Pasadena, CA.
See Duarte Internists, Duarte Hematologists, and Duarte Oncologists.