DR. JUAN CARLOS ARMSTRONG JR. MD
NPI 1427744606
Internal Medicine in Nashville, TN

Q: What is Juan Armstrong's NPI number?

The NPI number for Juan Armstrong is 1427744606. It was assigned to this individual provider in the NPPES registry on April 12, 2023.

Q: What is Juan Armstrong's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Q: When was this NPI record last updated?

The NPPES record for Juan Armstrong was last updated on June 9, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 months ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 12, 2023PECOS EnrolledAccepts Medicare Assignment

1301 MEDICAL CENTER DR, NASHVILLE, TN 37232(615) 322-5000 Get Directions Write a Review

NPPES record last updated: June 9, 2026. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: May 8, 2023, Apr 12, 2023 (2 updates tracked since 2023).

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About Dr. Juan Carlos Armstrong Jr. Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. JUAN CARLOS ARMSTRONG JR. MD (NPI 1427744606) is an individual internal medicine provider in Nashville, Tennessee, licensed in Tennessee (73004) and active in the NPI registry since April 2023. He is enrolled in Medicare PECOS, is affiliated with Vanderbilt University Medical Center, and maintains 2 additional practice locations.

NPPES Registry Identity

NPI1427744606

Entity TypeIndividualMale

Primary Taxonomy207R00000X

Provider Legal NameDR. JUAN CARLOS ARMSTRONG JR.Credential: MD

Location Address1301 MEDICAL CENTER DRNashville, TN 37232-0028

Mailing Address3841 Green Hills Village Dr Ste 200Nashville, TN 37215-2691

Phone(615) 322-5000

Sole ProprietorYes

Medical School CMSOtherGraduated 2023

Enumeration DateApril 12, 2023

Last NPPES UpdateJune 9, 20262 updates tracked since enumeration

NPPES CertifiedJune 9, 2026

✔ NPI 1427744606 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians

Taxonomy Code207R00000X

License✔ Licensed in TN · 73004

Definition

A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.

Also ListedStudent in an Organized Health Care Education/Training ProgramTaxonomy 390200000X

1301 MEDICAL CENTER DR, Nashville, TN 37232

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Secondary Practice Locations 2

Location 1719 Thompson Ln Ste 20400Nashville, TN 37204-4600 · Phone (615) 936-1254

Location 21250 E 66th StSavannah, GA 31404-5704 · Phone (678) 548-1724

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Arkansas Health & Wellness, Ambetter Health and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Juan Carlos Armstrong Jr. Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID1658735105

PECOS Enrollment IDI20260604000855

Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Juan Armstrong reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Vanderbilt University Medical Center

Same address

Internal Medicine

1301 22ND AVE S
Nashville, TN 37232

Reassigned Medicare billing, Tennessee enrollment
4,711 clinicians in this Medicare group

NPI 1104202761 (615) 936-2000

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Hospital Affiliations CMS Care Compare

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

Vanderbilt University Medical Center

Acute Care Hospitals · Nashville, TN

4/5 CMS rating

OwnershipVoluntary non-profit - Private

CMS Certification Number440039

Location1211 Medical Center DriveNashville, TN 37232 · Davidson County

Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37232 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient

$121.80 typical visit price

range $52.64 – $160.89

Typical copayment $30.45 (range $13.16 – $40.22)

Most-billed visit code 99204

Established Patient

$93.60 typical visit price

range $16.72 – $131.41

Typical copayment $23.40 (range $4.18 – $32.85)

Most-billed visit code 99214

Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

MARK ANDREW KACHAN DPM

Podiatrist