Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

Dr. John D Cowan, MD

Individual provider Medical Oncology Physician · NPI 1629046545

Dr. John D Cowan, MD is a Medical Oncology Physician in Maryville, Tennessee. Licensed in Tennessee. Registered with an NPI since 2006.

Licensed in
TN
In the registry since
2006
Specialties on file
2
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

907 E Lamar Alexander Pkwy
Maryville, TN 37804-5015 Not confirmed with CMS for 14 years — call before visiting
Phone: (865) 977-4641
Fax: (865) 977-4787
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Medical Oncology Physician (primary) Taxonomy 207RX0202X · Licence MD0000009032 (TN)
Hospice and Palliative Medicine (Internal Medicine) Physician Taxonomy 207RH0002X · Licence 9032 (TN)

Record details

NPI number1629046545
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 8, 2006
Last updated in NPPESDecember 13, 2011