What is Cassandra Williams's specialty?

Cassandra Williams (NPI 1558546820) is a Medicare-billing provider whose primary specialty is Internal Medicine in Amherst, NY.

Where does Cassandra Williams practice?

Cassandra Williams practices in Amherst, NY, based on the location reported in the CMS Medicare provider datasets for NPI 1558546820.

How much does Medicare pay Cassandra Williams?

Cassandra Williams (NPI 1558546820) received approximately $70K in total Medicare Part B payments, serving 206 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1558546820

Cassandra WilliamsMD

Internal MedicineAmherst, NYI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

294

Unique beneficiaries

—

Total services

810

Distinct HCPCS

Medicare payment

$68K

Peer benchmark

Total Medicare services vs. 7,864 Internal Medicine providers in NY — above median (cohort median 552).

PRESCRIBING · PART D · 2024

Total Rx claims

22,469

Beneficiaries

—

Total drug cost

$2.9M

Distinct drugs

234

Brand share

23.6%

Top prescribed drugs

Levothyroxine Sodium1,190 claims

Apixaban755 claims

Amlodipine Besylate753 claims

Atorvastatin Calcium743 claims

Furosemide697 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$349

Payment records

By payment type

Food and Beverage$349

Top paying entities

Food and Beverage$349

REFERRAL NETWORK

Where Cassandra Williams'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). 61 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
THE CHARLOTTE-MECKLENBURG HOSPITAL AUTHORITY	401	1,750
Mark Fromke Diagnostic Radiology · Charlotte, NC	74	227
CAROLINAS MEDICAL CENTER	62	201
Charles Mclaughlin Diagnostic Radiology · Charlotte, NC	62	198
Thaddeus Houston Diagnostic Radiology · Charlotte, NC	61	217
Andrew Hines Diagnostic Radiology · Charlotte, NC	49	189
Michael Meuse Diagnostic Radiology · Charlotte, NC	43	218
Ashesh Patel Cardiology · Concord, NC	42	101
Stephen Zouzoulas Advanced Heart Failure and Transplant Cardiology · Concord, NC	41	158
Barbara Barone Internal Medicine · Concord, NC	41	195
Santosh Rao Cardiology · Concord, NC	40	116
County Of Rowan Ambulance Service Provider · Salisbury, NC	39	129

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