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

Dr. Gregory Lenard De Roo, MD, MBA

Individual provider Psychiatry Physician · NPI 1316681026

Dr. Gregory Lenard De Roo, MD, MBA is a Psychiatry in Johnson City, Tennessee. Qualified in 2022, 4 years ago. Works from 2 locations. Licensed in Tennessee.

Years since qualifying
4
Licensed in
TN
In the registry since
2022
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.
MBA — Master of Business Administration
A graduate business degree.

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Practice location Address checks out

403 N State Of Franklin Rd
Johnson City, TN 37604-6034
Phone: (423) 431-7111
Fax: (423) 431-7092
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • Building 52/Lake Drive, Mountain Home, TN 37684 — (423) 439-8000

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 77588 (TN)

Record details

NPI number1316681026
Entity typeIndividual (Type 1)
GenderMale
Credentials MD , MBA
Sole proprietorNo
NPI enumeratedApril 27, 2022
Last updated in NPPESJuly 9, 2026
Certification dateJuly 9, 2026

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyPSYCHIATRY
Medical schoolOTHER
Graduated 2022 (4 years in practice)
Accepts Medicare assignment Not indicated

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