What is John Fassler's specialty?

John Fassler (NPI 1891798757) is a Medicare-billing provider whose primary specialty is Nephrology in Rock Hill, SC.

Where does John Fassler practice?

John Fassler practices in Rock Hill, SC, based on the location reported in the CMS Medicare provider datasets for NPI 1891798757.

How much does Medicare pay John Fassler?

John Fassler (NPI 1891798757) received approximately $150K in total Medicare Part B payments, serving 627 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1891798757

John FasslerMD

PRACTICENEPHROLOGY ASSOCIATES PASee all providers at this practice →

NephrologyRock Hill, SCI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,292

Unique beneficiaries

—

Total services

1,970

Distinct HCPCS

Medicare payment

$144K

Peer benchmark

Total Medicare services vs. 138 Nephrology providers in SC — above median (cohort median 2,014).

PRESCRIBING · PART D · 2024

Total Rx claims

343

Beneficiaries

—

Total drug cost

$18K

Distinct drugs

Brand share

7.0%

Top prescribed drugs

Amlodipine Besylate55 claims

Metoprolol Succinate48 claims

Furosemide39 claims

Losartan Potassium36 claims

Dapagliflozin Propanediol24 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

Total received

$66

Payment records

By payment type

Food and Beverage$66

Top paying entities

Food and Beverage$66

REFERRAL NETWORK

Where John Fassler'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). 89 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
SOLSTAS LAB PARTNERS GROUP LLC	414	1,521
Ramesh Bhoothapuri Nephrology · Rock Hill, SC	245	1,033
LANCASTER HOSPITAL CORPORATION	220	1,181
AMISUB OF SOUTH CAROLINA, INC.	196	655
Kenneth Fox Diagnostic Radiology · Charlotte, NC	118	410
Tommy Weaver Diagnostic Radiology · Charlotte, NC	115	418
Julie Webster Diagnostic Radiology · Spartanburg, SC	103	430
County Of Lancaster Ambulance Service Provider · Lancaster, SC	87	257
PETERSON, ERIC	78	290
Deepak Shah Cardiology · Lancaster, SC	76	255
Zafar Iqbal Cardiology · Lancaster, SC	72	270
Ifediora Afulukwe Internal Medicine · Heath Springs, SC	72	349

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