What is Gregory Keelen's specialty?

Gregory Keelen (NPI 1811905227) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Denison, TX.

Where does Gregory Keelen practice?

Gregory Keelen practices in Denison, TX, based on the location reported in the CMS Medicare provider datasets for NPI 1811905227.

How much does Medicare pay Gregory Keelen?

Gregory Keelen (NPI 1811905227) received approximately $84K in total Medicare Part B payments, serving 651 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1811905227

Gregory KeelenDO

Emergency MedicineDenison, TXI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

681

Unique beneficiaries

—

Total services

702

Distinct HCPCS

Medicare payment

$81K

Peer benchmark

Total Medicare services vs. 3,447 Emergency Medicine providers in TX — top quintile (cohort median 308).

PRESCRIBING · PART D · 2024

Total Rx claims

742

Beneficiaries

—

Total drug cost

$5K

Distinct drugs

Brand share

13.1%

Top prescribed drugs

Doxycycline Hyclate97 claims

Ondansetron Hcl84 claims

Tramadol Hcl59 claims

Methylprednisolone56 claims

Prednisone50 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$387

Payment records

By payment type

Food and Beverage$387

Top paying entities

Food and Beverage$387

REFERRAL NETWORK

Where Gregory Keelen'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). 78 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Joe Niehus Diagnostic Radiology · Denison, TX	319	541
Thomas Mcgee Diagnostic Radiology · Denison, TX	283	544
Ian Fischer Diagnostic Radiology · Tulsa, OK	233	388
William Frey Specialist · Denison, TX	227	410
Srinivasa Reddy Interventional Cardiology · Denison, TX	184	368
Bradley Hammett Diagnostic Radiology · Denison, TX	170	301
City Of Denison Ambulance Service Provider · Denison, TX	135	259
Winston Marshall Interventional Cardiology · Denison, TX	113	277
Laboratory Corporation Of America Clinical Laboratory · Dallas, TX	86	178
MIDLAND COUNTY HOSPITAL DISTRICT	78	154
JOULES, NASHEEL	65	130
Jenson Abraham Internal Medicine · Denison, TX	64	141

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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