What is Jonathan Greifenkamp's specialty?

Jonathan Greifenkamp (NPI 1235333808) is a Medicare-billing provider whose primary specialty is Cardiology in Longview, TX.

Where does Jonathan Greifenkamp practice?

Jonathan Greifenkamp practices in Longview, TX, based on the location reported in the CMS Medicare provider datasets for NPI 1235333808.

How much does Medicare pay Jonathan Greifenkamp?

Jonathan Greifenkamp (NPI 1235333808) received approximately $579K in total Medicare Part B payments, serving 1,459 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1235333808

Jonathan GreifenkampMD

CardiologyLongview, TXI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

3,949

Unique beneficiaries

—

Total services

5,366

Distinct HCPCS

Medicare payment

$499K

Peer benchmark

Total Medicare services vs. 1,379 Cardiology providers in TX — top quintile (cohort median 2,215).

PRESCRIBING · PART D · 2024

Total Rx claims

4,716

Beneficiaries

—

Total drug cost

$796K

Distinct drugs

Brand share

37.2%

Top prescribed drugs

Clopidogrel Bisulfate692 claims

Atorvastatin Calcium373 claims

Apixaban342 claims

Carvedilol291 claims

Ezetimibe237 claims

QUALITY · MIPS · 2024

Final MIPS score

89.5

Quality

79.1

Cost

0.0

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.61%

APM Entity

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$3K

Payment records

156

By payment type

Food and Beverage$3K

Top paying entities

Food and Beverage$3K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Jonathan Greifenkamp'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). 94 inbound referrers · 207 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Samir Germanwala Cardiology · Longview, TX	354	1,244
Timothy Graham Diagnostic Radiology · Longview, TX	265	553
Charles Duvall Diagnostic Radiology · Longview, TX	256	553
ERWIN, DAVID	183	353
Gene Kelly Emergency Medicine · Longview, TX	181	371
ARCHER, TIMOTHY	165	417
Timothy Tobin Internal Medicine · Longview, TX	146	335
City Of Longview Ambulance Service Provider · Longview, TX	145	246
Rajeev Singh Cardiology · Longview, TX	144	374
Jorge Massare-Rodriguez Clinical Cardiac Electrophysiology · Longview, TX	142	507
Scott Bryk Diagnostic Radiology · Longview, TX	131	325
Anita Scribner Infectious Disease · Longview, TX	111	277

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
LONGVIEW MEDICAL CENTER LP	905	2,459
ERWIN, DAVID	360	783
Robert Maxey Diagnostic Radiology · Longview, TX	314	808
Samir Germanwala Cardiology · Longview, TX	278	813
THE GOOD SHEPHERD HOSPITAL, INC.	264	638
Scott Bryk Diagnostic Radiology · Longview, TX	226	667
Timothy Graham Diagnostic Radiology · Longview, TX	200	471
James Lowe Diagnostic Radiology · Longview, TX	195	543
Melissa Sutton Nurse Practitioner · Longview, TX	187	556
Charles Duvall Diagnostic Radiology · Longview, TX	185	536
Ronald Scott Cardiology · Longview, TX	148	361
Rajeev Singh Cardiology · Longview, TX	132	352

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