What is Gregory Sibley's specialty?

Gregory Sibley (NPI 1043211360) is a Medicare-billing provider whose primary specialty is Radiation Oncology in Fairfax, VA.

Where does Gregory Sibley practice?

Gregory Sibley practices in Fairfax, VA, based on the location reported in the CMS Medicare provider datasets for NPI 1043211360.

How much does Medicare pay Gregory Sibley?

Gregory Sibley (NPI 1043211360) received approximately $2.3M in total Medicare Part B payments, serving 272 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1043211360

Gregory SibleyM.D.

Radiation OncologyFairfax, VAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,578

Unique beneficiaries

—

Total services

14,547

Distinct HCPCS

Medicare payment

$2.3M

Peer benchmark

Total Medicare services vs. 97 Radiation Oncology providers in VA — top quintile (cohort median 2,481).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$43K

Distinct drugs

Brand share

28.6%

Top prescribed drugs

Tamsulosin Hcl26 claims

Relugolix16 claims

Ciprofloxacin Hcl14 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$190

Payment records

By payment type

Food and Beverage$190

Top paying entities

Food and Beverage$190

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 490040

Hospital

REFERRAL NETWORK

Where Gregory Sibley's patients come from & go

Directional shared-patient flow from Medicare claims — who sends patients to this provider (inbound) and where this provider's patients go next (outbound). 8 inbound referrers · 14 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Quest Diagnostics Incorporated Md Clinical Laboratory · Baltimore, MD	79	1,384
Harold Agbahiwe Radiation Oncology · Fairfax, VA	79	3,046
Dipti Patel-Donnelly Hematology-Oncology · Fairfax, VA	49	647
Eric Norby Nuclear Medicine · Annandale, VA	28	125
KALES, ARTHUR	23	207
Anne Favret Hematology-Oncology · Fairfax, VA	22	172
INOVA HEALTH CARE SERVICES	14	71
Brant Wang Pathology · Houston, TX	11	31

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
Harold Agbahiwe Radiation Oncology · Fairfax, VA	85	3,267
Quest Diagnostics Incorporated Md Clinical Laboratory · Baltimore, MD	80	1,590
Robert Reid Hematology-Oncology · Fairfax, VA	53	534
Alexander Spira Medical Oncology · Fairfax, VA	49	789
Raymond Wadlow Medical Oncology · Fairfax, VA	47	759
Dipti Patel-Donnelly Hematology-Oncology · Fairfax, VA	45	510
INOVA HEALTH CARE SERVICES	42	230
Gregory Orloff Hematology-Oncology · Fairfax, VA	40	418
ROBERT, NICHOLAS	25	244
KALES, ARTHUR	18	208
Laboratory Corporation Of America Holdings Clinical Laboratory · Burlington, NC	17	109
Anne Favret Hematology-Oncology · Fairfax, VA	16	178

Source: CMS Physician Shared Patient Patterns (30-day window, Medicare FFS). Direction = a beneficiary seen by the first provider, then the second, within 30 days; a proxy for referral, not a documented referral. Pairs with fewer than 11 shared beneficiaries are suppressed.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events