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

David O Chastain, MD

Individual provider Pediatric Adolescent Medicine Physician · NPI 1932192135

David O Chastain, MD is a Pediatric Adolescent Medicine Physician in Johnson City, Tennessee. Licensed in Tennessee. Registered with an NPI since 2005.

Licensed in
TN
In the registry since
2005
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

325 N State Of Franklin Rd Ground Fl
Johnson City, TN 37604-6062
Phone: (423) 439-7320
Fax: (423) 439-7343
Show map & directions

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

Specialties & licences

Pediatric Adolescent Medicine Physician (primary) Taxonomy 2080A0000X · Licence MD35095 (TN)

Record details

NPI number1932192135
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedAugust 24, 2005
Last updated in NPPESNovember 2, 2010
Mailing addressPo Box 699, Mountain Home, TN 37684-0699