1. Home
  2. Directory
  3. Virginia
  4. Fairfax
  5. Internal Medicine
  6. NPI Profile

DR. CONSTANTINE TZIROS MD
NPI 1215193529
Internal Medicine - Cardiovascular Disease in Fairfax, VA

Active since August 06, 2008PECOS EnrolledAccepts Medicare Assignment
12011 LEE JACKSON MEMORIAL HWY, PENDERBROOK MEDICAL CENTER, FAIRFAX, VA 22033(703) 383-5400(703) 383-5489 Get Directions Write a Review

NPPES record last updated: June 12, 2021. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Constantine Tziros Md NPPES

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

DR. CONSTANTINE TZIROS MD (NPI 1215193529) is an individual cardiovascular disease provider in Fairfax, Virginia, licensed in Virginia (0101245458) and active in the NPI registry since August 2008. He is enrolled in Medicare PECOS, is affiliated with Virginia Hospital Center, and is a graduate of Boston University School Of Medicine (2003).

NPPES Registry Identity

NPI1215193529
Entity TypeIndividualMale
Primary Taxonomy207RC0000X
Provider Legal NameDR. CONSTANTINE TZIROSCredential: MD
Location Address12011 LEE JACKSON MEMORIAL HWY, PENDERBROOK MEDICAL CENTERFairfax, VA 22033-3310
Mailing Address2101 E Jefferson St, Kaiser Permanente Medicare EnrollmentRockville, MD 20852-4908 · (301) 816-2424
Phone(703) 383-5400
Fax(703) 383-5489
Sole ProprietorNo
Medical School CMSBoston University School Of MedicineGraduated 2003
Enumeration DateAugust 6, 2008
Last NPPES UpdateJune 12, 2021
NPPES CertifiedJune 12, 2021
✔ NPI 1215193529 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Cardiovascular DiseaseAllopathic & Osteopathic Physicians
Taxonomy Code207RC0000X
License✔ Licensed in VA · 0101245458
Definition
An internist who specializes in diseases of the heart and blood vessels and manages complex cardiac conditions such as heart attacks and life-threatening, abnormal heartbeat rhythms.
Also ListedInternal MedicineTaxonomy 207R00000X · License MD036351 (DC)
12011 LEE JACKSON MEMORIAL HWY, Fairfax, VA 22033
Open in Google Maps ↗

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. Constantine Tziros 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 ID6305972803
PECOS Enrollment IDI20100408000349, I20101020001294, I20150529001601
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 Constantine Tziros reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc
3.6 mi
Health Maintenance Organization
12255 FAIR OAKS PKWY
Fairfax, VA 22033
NPI 1215058326 (703) 934-5700

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

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report 93000
An electrocardiogram (ECG) is a non-invasive test that records your heart's electrical activity. Using 12 leads attached to your body, it captures data to help identify heart conditions. A doctor interprets the results and provides a report.
87 services79 patients
Ultrasound of heart with color-depicted blood flow, rate, direction and valve function 93306
This is a heart ultrasound, also known as an echocardiogram. It uses sound waves to create pictures of your heart, showing how blood flows through it. The color depicts the blood flow's speed and direction. It also checks the heart's valves to ensure they're working properly.
12 services12 patients

Hospital Affiliations CMS Care Compare

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

Virginia Hospital Center

Acute Care Hospitals · Arlington, VA
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number490050
Location1701 North George Mason DriveArlington, VA 22205 · Arlington County
Emergency services Birthing friendly

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 22033 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
Established Patient
$80.66 typical visit price
range $21.40 – $158.88
Typical copayment $20.16 (range $5.35 – $39.72)
Most-billed visit code 99213
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.

MRS. SYLVIA SUSAN SARIN PA-C
Physician Assistant (Medical)
12011 LEE JACKSON MEMORIAL HWY
FAIRFAX, VA 22033
Fairfax County (703) 383-5443
PARAMOUNT CARE PHYSICIANS LLP
Internal Medicine
12011 LEE JACKSON MEMORIAL HWY, SUITE 230
FAIRFAX, VA 22033
Fairfax County (703) 222-0002
BNM, INC.
Pediatrics
12011 LEE JACKSON MEMORIAL HWY, SUITE 220
FAIRFAX, VA 22033
Fairfax County (703) 865-5437
BARRY JOHN DECKER M.D.
Internal Medicine (Pulmonary Disease)
12011 LEE JACKSON MEMORIAL HWY, PENDERBROOK MEDICAL CENTER
FAIRFAX, VA 22033
Fairfax County (703) 383-5400
DR. DAVID C LIPPS MD
Chiropractor (Neurology)
12011 LEE JACKSON MEMORIAL HWY, 2ND FLOOR
FAIRFAX, VA 22033
Fairfax County (703) 383-5411
WAYNE SCHECHT D.D.S.
Dentist (General Practice)
12011 LEE JACKSON MEMORIAL HWY, SUITE 105
FAIRFAX, VA 22033
Fairfax County (703) 273-5354
CLIFTON CARE LLC
Clinic/Center (VA)
12011 LEE JACKSON MEMORIAL HWY, SUITE 102
FAIRFAX, VA 22033
Fairfax County (703) 385-8378
DR. KOMAL S. KARMACHARYA D.D.S.
Dentist (General Practice)
12011 LEE JACKSON MEMORIAL HWY, SUITE 502
FAIRFAX, VA 22033
Fairfax County (703) 268-5622

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 Constantine Tziros's NPI number?

The NPI number for Constantine Tziros is 1215193529. It was assigned to this individual provider in the NPPES registry on August 6, 2008.

Where is Constantine Tziros located?

Constantine Tziros practices at 12011 Lee Jackson Memorial Hwy Penderbrook Medical Center, Fairfax, VA 22033. The listed phone number is (703) 383-5400.

What is Constantine Tziros's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Cardiovascular Disease, with taxonomy code 207RC0000X.

Is Constantine Tziros enrolled in Medicare?

Yes. Constantine Tziros is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Constantine Tziros's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Constantine Tziros reassigns Medicare benefits to Kaiser Foundation Health Plan Of The Mid Atlantic States, Inc (Fairfax, VA). 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 Constantine Tziros's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

Is Constantine Tziros affiliated with any hospitals?

According to CMS data, Constantine Tziros is affiliated with Virginia Hospital Center.

When was this NPI record last updated?

The NPPES record for Constantine Tziros was last updated on June 12, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.