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MR. ADAM J. HORN NP
NPI 1255515896
Nurse Practitioner - Psychiatric/Mental Health in Johnson City, TN

Active since December 18, 2007
403 N STATE OF FRANKLIN RD, JOHNSON CITY, TN 37604(423) 431-7047 Get Directions Write a Review

NPPES record last updated: January 22, 2026. Verified against the NPPES registry weekly; last sync: September 27, 2026.

Record update history: Jan 22, 2026, Aug 11, 2021, Mar 17, 2018 and 1 more (4 updates tracked since 2017).

About Mr. Adam J. Horn Np NPPES

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

MR. ADAM J. HORN NP (NPI 1255515896) is an individual psychiatric/mental health provider in Johnson City, Tennessee, licensed in Virginia (0024181268) and active in the NPI registry since December 2007. He maintains 2 additional practice locations.

NPPES Registry Identity

NPI1255515896
Entity TypeIndividualMale
Primary Taxonomy363LP0808X
Provider Legal NameMR. ADAM J. HORNCredential: NP
Location Address403 N STATE OF FRANKLIN RDJohnson City, TN 37604-6034
Mailing Address21937 Bramblebush TerBroadlands, VA 20148-5313 · (423) 330-2316
Phone(423) 431-7047
Sole ProprietorNo
Enumeration DateDecember 18, 2007
Last NPPES UpdateJanuary 22, 20264 updates tracked since enumeration
NPPES CertifiedJanuary 22, 2026
✔ NPI 1255515896 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyNurse Practitioner · Psychiatric/Mental HealthPhysician Assistants & Advanced Practice Nursing Providers
Taxonomy Code363LP0808X
Licenses✔ Licensed in VA · 0024181268✔ Licensed in CO · C-RXN.0001416-C-NP
Also ListedCounselor · Mental HealthTaxonomy 101YM0800X · License LH00010956 (WA)
Also ListedClinical Nurse Specialist · Psychiatric/Mental Health, AdultTaxonomy 364SP0809X · License 22909 (TN)
403 N STATE OF FRANKLIN RD, Johnson City, TN 37604
Open in Google Maps ↗

Secondary Practice Locations 2

Location 11900 Reston Metro Plz Ste 600Reston, VA 20190-5952 · Phone (703) 256-1600 · Fax (703) 719-3341
Location 2325 E Pioneer AvePuyallup, WA 98372-3265 · Phone (253) 697-8548 · Fax (253) 697-8392

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Oscar Health Maintenance Organization of Florida, Oscar Insurance Company, UnitedHealthcare.Insurance ›

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.

MOUNTAIN STATES HEALTH ALLIANCE
Psychiatric Unit
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7111
BLUE RIDGE MEDICAL MANAGEMENT CORPORATION
Psychiatry & Neurology (Psychiatry)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7047
SAVANNAH R BOLES RT(R)(MR)RN
Student in an Organized Health Care Education/Training Program
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7111
MR. MARC DOMINIC HARRINGTON MA, LPC
Counselor (Professional)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7111
CLAY BLANCHETT MD
Psychiatry & Neurology (Psychiatry)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7111
JEFFREY WAYNE MARGESON NP
Nurse Practitioner (Family)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7011
RODNEY A HOUGHTON MD
Psychiatry & Neurology (Psychiatry)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7013
MICHAELA ANN OUTLAW
Nurse Practitioner (Psychiatric/Mental Health)
403 N STATE OF FRANKLIN RD
JOHNSON CITY, TN 37604
Washington County (423) 431-7111

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Adam Horn's NPI number?

The NPI number for Adam Horn is 1255515896. It was assigned to this individual provider in the NPPES registry on December 18, 2007.

Where is Adam Horn located?

Adam Horn practices at 403 N State Of Franklin Rd, Johnson City, TN 37604. The listed phone number is (423) 431-7047.

What is Adam Horn's specialty?

The primary specialty registered for this NPI is Nurse Practitioner, specializing in Psychiatric/Mental Health, with taxonomy code 363LP0808X.

What insurance does Adam Horn accept?

Health plans from Oscar Health Maintenance Organization of Florida, Oscar Insurance Company and UnitedHealthcare list Adam Horn as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Adam Horn was last updated on January 22, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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.