NPPES file of Aug 9, 2026

Robert James Armstrong, D.O.

Family Medicine Physician · Nashville, TN

Robert James Armstrong, D.O. is a family medicine physician with a practice address in Nashville, Tennessee, and NPI 1891148847, issued on Jul 14, 2016. Check the license (Tennessee 5702, as entered in NPPES) on the Tennessee Board of Medical Examiners; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891148847
Name
Robert James Armstrong
Credential
D.O.
Primary taxonomy
Family Medicine Physician 207Q00000X
License numbers
5702 TN
20A15772 CA
Self-reported in NPPES; status is on the state search
Practice location
3601 The Vanderbilt Clinic, Nashville, TN 37232
Phone
(615) 322-3000
Enumerated
Jul 14, 2016
Record last updated
Aug 14, 2024
Medicare enrollment
Enrolled (PECOS I20240729003959); accepts Medicare assignment
Medical or professional school
Touro Un College Of Osteopathic Medicine, Vallejo, 2016
Telehealth
Offers telehealth (CMS)
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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8 nearest family medicine physician records → All 2,674 in Tennessee → Look up another NPI →

Also registered at 3601 The Vanderbilt Clinic

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

  1. Kristie AamodtPediatric Endocrinology Physician1780115931
  2. Hibo Abdi, APRNGerontology Nurse Practitioner1336761758
  3. Hodan Abdi, NPFamily Nurse Practitioner1710383922
  4. Cecilia Abello, PA-CPhysician Assistant1760336101
  5. Ahad Abid, MDInternal Medicine Physician1316500176
  6. Yara Aboshady, MDObstetrics & Gynecology Physician1558998971

Verify Robert James Armstrong 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 5702    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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87% fewer Medicare Part D claims than the average family medicine physician in 2024

465 Medicare Part D claims for 106 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 12% of claims.

  1. Robert Armstrong465
  2. Specialty average3,544

Most prescribed

  1. Atorvastatin Calcium25 claims
  2. Losartan Potassium23 claims
  3. Trazodone Hcl22 claims
  4. Amlodipine Besylate20 claims
  5. Rosuvastatin Calcium19 claims
  6. Metoprolol Tartrate17 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

Industry payments in 2024: $121.86

1 payment: food and beverage; the largest payer was Lilly USA, LLC. The 55,478 providers of this specialty with any payment received $902.55 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Robert Armstrong$121.86
  2. Specialty average$902.55

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

One hospital affiliation

  1. Vanderbilt University Medical CenterNashville, TN · Acute Care Hospitals5 of 5 stars

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.

Robert James Armstrong among 2,674 family medicine physician records in Tennessee

Robert James Armstrong, D.O. is one of 2,674 family medicine physician records with a practice address in Tennessee. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 78% of them.

  • NPI issued2016 · 78% of these records are older, 19% newer
  • In a Medicare fileYes · 81% of these records are
  • In the CMS Doctors and Clinicians fileYes · 63% of these records are
  • Graduated2016 · median 2004 among the 1,685 with a school on file
  • Record last updated2024 · 54% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Tennessee practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

Family Medicine Physician providers in Tennessee

There are 2,674 family medicine physician records in Tennessee.

All 2,674 in Tennessee → Every provider in Nashville → Family Medicine Physician nationwide →

The 8 family medicine physician records with the nearest ZIP codes

  1. Mark Chambers, M.DNashville, TN 372321033168059
  2. Jack Clark, MDNashville, TN 372321427092857
  3. Bridgette Franey, M.D.Nashville, TN 372321417970831
  4. Aleksandra Frye, M.D.Nashville, TN 372321932180007
  5. Philip Harrelson, MDNashville, TN 372321518959311
  6. Robert Hornsby, MDNashville, TN 372321275527210
  7. John Kane, MDNashville, TN 372321548251705
  8. Elizabeth Maxwell, M.D.Nashville, TN 372321407869647

Common questions

What is Robert James Armstrong, D.O.'s NPI number?

Robert James Armstrong, D.O.'s National Provider Identifier (NPI) is 1891148847, issued on Jul 14, 2016. An NPI identifies a provider in billing; it is not a license.

Where is Robert James Armstrong, D.O. located?

The NPPES record lists a practice address at 3601 The Vanderbilt Clinic, Nashville, TN, 37232. Phone: (615) 322-3000. Providers update this record themselves, so call before visiting.

How can I verify Robert James Armstrong, D.O.'s license?

NPPES lists Tennessee license number 5702, 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.

How much does Robert James Armstrong, D.O. prescribe under Medicare Part D?

In 2024, Robert James Armstrong, D.O. had 465 Medicare Part D claims for 106 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. 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.