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
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
Mailing addressPo Box 5629, Maryville, TN 37802-5629