JASON T HATJIOANNOU MD
NPI 1740285923
Internal Medicine in Johnson City, TN

Active since June 15, 2005PECOS Enrolled
1930 VILLA CT, JOHNSON CITY, TN 37615(423) 913-1423 Get Directions Write a Review

NPPES record last updated: January 19, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jan 19, 2023, Mar 31, 2021, Nov 12, 2017 and 1 more (4 updates tracked since 2015).

About Jason T Hatjioannou Md NPPES

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

JASON T HATJIOANNOU MD (NPI 1740285923) is an individual internal medicine provider in Johnson City, Tennessee, licensed in Tennessee (18504) and active in the NPI registry since June 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1740285923
Entity TypeIndividualMale
Primary Taxonomy207R00000X
Provider Legal NameJASON T HATJIOANNOUCredential: MD
Location Address1930 VILLA CTJohnson City, TN 37615-4590
Mailing Address1930 Villa CtJohnson City, TN 37615-4590 · (423) 491-3214
Sole ProprietorNo
Enumeration DateJune 15, 2005
Last NPPES UpdateJanuary 19, 20234 updates tracked since enumeration
NPPES CertifiedJanuary 19, 2023
✔ NPI 1740285923 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in TN · 18504
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.
1930 VILLA CT, Johnson City, TN 37615

Other Identifiers 1

Medicaid3046331TN

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Jason T Hatjioannou Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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 Jason Hatjioannou reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Internal Medicine
121 BOONE RIDGE DR STE 1002
Johnson City, TN 37615
  • Reassigned Medicare billing, Tennessee enrollment
  • 357 clinicians in this Medicare group

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

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 37615 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.

Referred Medical Equipment & Supplies CMS DME claims 21

Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.

Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips A4253
DME-Other DME · category DE017N
14 suppliers37 claims132 services$6.58 avg. paid by Medicare
Lancets, per box of 100 A4259
DME-Medical/Surgical Supplies · category DA000N
5 suppliers17 claims26 services$1.12 avg. paid by Medicare
Tubing with integrated heating element for use with positive airway pressure device A4604
DME-Other DME · category DE001N
3 suppliers18 claims18 services$34.27 avg. paid by Medicare
Full face mask used with positive airway pressure device, each A7030
DME-Other DME · category DE001N
4 suppliers28 claims28 services$95.18 avg. paid by Medicare
Face mask interface, replacement for full face mask, each A7031
DME-Other DME · category DE001N
4 suppliers38 claims89 services$36.17 avg. paid by Medicare
Cushion for use on nasal mask interface, replacement only, each A7032
DME-Other DME · category DE001N
4 suppliers24 claims77 services$17.06 avg. paid by Medicare
Dollar amounts are the average Medicare paid the supplier per service. They are not the cost to the patient.

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 Jason Hatjioannou's NPI number?

The NPI number for Jason Hatjioannou is 1740285923. It was assigned to this individual provider in the NPPES registry on June 15, 2005.

Where is Jason Hatjioannou located?

Jason Hatjioannou practices at 1930 Villa Ct, Johnson City, TN 37615. The listed phone number is (423) 913-1423.

What is Jason Hatjioannou's specialty?

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

Is Jason Hatjioannou enrolled in Medicare?

Yes. Jason Hatjioannou is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Jason Hatjioannou's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Jason Hatjioannou reassigns Medicare benefits to State Of Franklin Healthcare Associates PLLC (Johnson City, TN). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Jason Hatjioannou's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Jason Hatjioannou was last updated on January 19, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years 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.