NPPES file of Aug 9, 2026

Gregory Lenard De Roo, MD, MBA

Psychiatry Physician · Johnson City, TN

Gregory Lenard De Roo, MD, MBA is a psychiatry physician with a practice address in Johnson City, Tennessee, and NPI 1316681026, issued on Apr 27, 2022. Check the license (Tennessee 77588, as entered in NPPES) on the Tennessee Board of Medical Examiners; the federal record below is the public data PlainDoctor holds for this provider.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1316681026
Name
Gregory Lenard De Roo
Credential
MD, MBA
Primary taxonomy
Psychiatry Physician 2084P0800X
License number
77588 TN
Self-reported in NPPES; status is on the state search
Practice location
403 N State OF Franklin RD, Johnson City, TN 37604
Phone
(423) 431-7111
Enumerated
Apr 27, 2022
Record last updated
Jul 9, 2026
Fax
(423) 431-7092
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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8 nearest psychiatry physician records → All 731 in Tennessee → Look up another NPI →

Also registered at 403 N State OF Franklin RD

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. John Abner, PHDClinical Psychologist1508885138
  2. Katherine Astaneh, FNPFamily Nurse Practitioner1902330269
  3. Clay Blanchett, MDPsychiatry Physician1205398179
  4. Lisa Blevins, APNAdult Psychiatric/Mental Health Clinical Nurse Specialist1851452288
  5. Aaryn BrewsterPharmacist1760331706
  6. Haley Elliott, NPPsychiatric/Mental Health Nurse Practitioner1942847694

Verify Gregory Lenard De Roo in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTennessee Board of Medical Examiners
    Search for license 77588    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Tennessee license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Gregory Lenard De Roo among 731 psychiatry physician records in Tennessee

Gregory Lenard De Roo, MD, MBA is one of 731 psychiatry physician records with a practice address in Tennessee. 66% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2022, is newer than 96% of them.

  • NPI issued2022 · 96% of these records are older, 2% newer
  • In a Medicare fileNo · 66% of these records are
  • In the CMS Doctors and Clinicians fileNo · 45% of these records are
  • Record last updated2026 · 51% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

45 psychiatry physician records list a practice address in Johnson City

They are 45 of the 3,807 NPPES records with a practice address in Johnson City, and 731 psychiatry physician records in Tennessee. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.

All 731 in Tennessee → Every provider in Johnson City → Psychiatry Physician nationwide →

The 8 psychiatry physician records with the nearest ZIP codes

  1. Fernando Bendfeldt, M.D.Johnson City, TN 376041205830536
  2. Brian Bonfardin, MDJohnson City, TN 376041356322515
  3. Shambhavi Chandraiah, M.D.Johnson City, TN 376041760439392
  4. William Diebold, MDJohnson City, TN 376041770573511
  5. John Fenley, MDJohnson City, TN 376041568537751
  6. Charles Gaines, DOJohnson City, TN 376041649236753
  7. Donald Henson, M.D.Johnson City, TN 376041245265925
  8. Rodney Houghton, MDJohnson City, TN 376041215993332

Common questions

What is Gregory Lenard De Roo, MD, MBA's NPI number?

Gregory Lenard De Roo, MD, MBA's National Provider Identifier (NPI) is 1316681026, issued on Apr 27, 2022. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Lenard De Roo, MD, MBA located?

The NPPES record lists a practice address at 403 N State OF Franklin RD, Johnson City, TN, 37604. Phone: (423) 431-7111. Providers update this record themselves, so call before visiting.

How can I verify Gregory Lenard De Roo, MD, MBA's license?

NPPES lists Tennessee license number 77588, as entered by the provider. Search the Tennessee Board of Medical Examiners at https://www.tn.gov/health/licensure/me.html. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.