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GEORGE SIDAROUS MD
NPI 1407506983
Internal Medicine - Hematology & Oncology in Little Rock, AR

Active since March 27, 2022PECOS Enrolled
4301 W MARKHAM ST, LITTLE ROCK, AR 72205(501) 686-8000 Get Directions Write a Review

NPPES record last updated: July 20, 2025. Verified against the NPPES registry weekly; last sync: August 02, 2026.

About George Sidarous Md NPPES

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

GEORGE SIDAROUS MD (NPI 1407506983) is an individual hematology & oncology provider in Little Rock, Arkansas, licensed in Virginia (0101281005) and active in the NPI registry since March 2022. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1407506983
Entity TypeIndividualMale
Primary Taxonomy207RH0003X
Provider Legal NameGEORGE SIDAROUSCredential: MD
Location Address4301 W MARKHAM STLittle Rock, AR 72205-7199
Mailing Address3800 Reservoir Rd Nw Dept OfWashington, DC 20007-2113
Phone(501) 686-8000
Sole ProprietorNo
Enumeration DateMarch 27, 2022
Last NPPES UpdateJuly 20, 2025
NPPES CertifiedJuly 20, 2025
✔ NPI 1407506983 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyInternal Medicine · Hematology & OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207RH0003X
License✔ Licensed in VA · 0101281005
Definition
An internist doctor of osteopathy that specializes in the treatment of the combination of hematology and oncology disorders. A doctor of osteopathy that is board eligible/certified by the American Osteopathic Board of Internal Medicine WAS able to obtain a Certificate of Special Qualifications in the field of Hematology and Oncology. The Certificate is NO longer offered.
Also ListedGeneral PracticeTaxonomy 208D00000X · License 0101281005 (VA)
4301 W MARKHAM ST, Little Rock, AR 72205
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Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

George Sidarous 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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 72205 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
$157.74 typical visit price
range $51.36 – $157.74
Typical copayment $39.43 (range $12.84 – $39.43)
Most-billed visit code 99205
Established Patient
$91.63 typical visit price
range $16.16 – $128.77
Typical copayment $22.90 (range $4.04 – $32.19)
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.

MRS. LESLEY BROOKE JONES R.D.
Dietitian, Registered
4301 W MARKHAM ST
LITTLE ROCK, AR 72205
Pulaski County (501) 686-6857
NANCY MAALOUF M.D.
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST, SLOT # 500
LITTLE ROCK, AR 72205
Pulaski County (501) 296-1165
DR. ARMANDO LEONEL MARTINEZ M.D.
Emergency Medicine
4301 W MARKHAM ST, SLOT 783
LITTLE ROCK, AR 72205
Pulaski County (501) 686-8000
ELENA AMBROGINI MD PHD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
4301 W MARKHAM ST, # 783
LITTLE ROCK, AR 72205
Pulaski County (501) 686-8000
SUKANTHI KOVVURU
Psychiatry & Neurology (Neuromuscular Medicine)
4301 W MARKHAM ST
LITTLE ROCK, AR 72205
Pulaski County (609) 865-3702
JORDAN ALEECE FLETCHER
Obstetrics & Gynecology
4301 W MARKHAM ST
LITTLE ROCK, AR 72205
Pulaski County (501) 686-7000
DR. TYLER KRISTOPHER ROSE M.D.
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST
LITTLE ROCK, AR 72205
Pulaski County (501) 686-8000
LUKE WILLIAM GANUCHEAU MD
Student in an Organized Health Care Education/Training Program
4301 W MARKHAM ST
LITTLE ROCK, AR 72205
Pulaski County (501) 376-2211

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 George Sidarous's NPI number?

The NPI number for George Sidarous is 1407506983. It was assigned to this individual provider in the NPPES registry on March 27, 2022.

Where is George Sidarous located?

George Sidarous practices at 4301 W Markham St, Little Rock, AR 72205. The listed phone number is (501) 686-8000.

What is George Sidarous's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Hematology & Oncology, with taxonomy code 207RH0003X.

Is George Sidarous enrolled in Medicare?

Yes. George Sidarous is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for George Sidarous was last updated on July 20, 2025. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.