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DR. ALEXANDER GEORGE TZAVARAS M.D.
NPI 1104089085
Pediatrics in Bronx, NY

Active since July 09, 2008PECOS Enrolled
3860 E TREMONT AVE, BRONX, NY 10465(718) 960-1592 Get Directions Write a Review

NPPES record last updated: November 13, 2025. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Dr. Alexander George Tzavaras M.d. NPPES

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

DR. ALEXANDER GEORGE TZAVARAS M.D. (NPI 1104089085) is an individual pediatrics provider in Bronx, New York, licensed in New York (248887-1) and active in the NPI registry since July 2008. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1104089085
Entity TypeIndividualMale
Primary Taxonomy208000000X
Provider Legal NameDR. ALEXANDER GEORGE TZAVARASCredential: M.D.
Location Address3860 E TREMONT AVEBronx, NY 10465-2422
Mailing Address3860 E Tremont AveBronx, NY 10465-2422 · (718) 881-0100
Phone(718) 960-1592
Sole ProprietorYes
Enumeration DateJuly 9, 2008
Last NPPES UpdateNovember 13, 2025
NPPES CertifiedNovember 13, 2025
✔ NPI 1104089085 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians
Taxonomy Code208000000X
License✔ Licensed in NY · 248887-1
Definition
A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.
3860 E TREMONT AVE, Bronx, NY 10465
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Alexander George Tzavaras M.d. 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 Alexander Tzavaras reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Montefiore Medical Center
5.0 mi
Anesthesiology
111 E 210TH ST
Bronx, NY 10467
  • Reassigned Medicare billing, New York enrollment
  • 5,251 clinicians in this Medicare group
NPI 1063525152 (914) 378-6021

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 10465 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
$105.06 typical visit price
range $67.40 – $203.53
Typical copayment $26.26 (range $16.85 – $50.88)
Most-billed visit code 99203
Established Patient
$117.62 typical visit price
range $21.66 – $164.45
Typical copayment $29.40 (range $5.41 – $41.11)
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 5

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

DR. BUSHRA AMIN MD
Internal Medicine
3860 E TREMONT AVE
BRONX, NY 10465
Bronx County (718) 881-0100
CHLOE DIMARE PA
Physician Assistant
3860 E TREMONT AVE
BRONX, NY 10465
Bronx County (718) 881-0100
GLORIA L MOREIRA LMSW
Social Worker
3860 E TREMONT AVE
BRONX, NY 10465
Bronx County (718) 881-0100
YONG KIM MD
Pediatrics
3860 E TREMONT AVE
BRONX, NY 10465
Bronx County (718) 881-0100
MONTEFIORE MEDCIAL CENTER
Clinic/Center
3860 E TREMONT AVE
BRONX, NY 10465
Bronx County (718) 881-0100

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 Alexander Tzavaras's NPI number?

The NPI number for Alexander Tzavaras is 1104089085. It was assigned to this individual provider in the NPPES registry on July 9, 2008.

Where is Alexander Tzavaras located?

Alexander Tzavaras practices at 3860 E Tremont Ave, Bronx, NY 10465. The listed phone number is (718) 960-1592.

What is Alexander Tzavaras's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Alexander Tzavaras enrolled in Medicare?

Yes. Alexander Tzavaras is registered in the Medicare PECOS enrollment system.

Which organization bills Medicare for Alexander Tzavaras's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Alexander Tzavaras reassigns Medicare benefits to Montefiore Medical Center (Bronx, NY). 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 Alexander Tzavaras'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 Alexander Tzavaras was last updated on November 13, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 11 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.