What is Stuart Kassan's specialty?

Stuart Kassan (NPI 1093706475) is a Medicare-billing provider whose primary specialty is Rheumatology in Denver, CO.

Where does Stuart Kassan practice?

Stuart Kassan practices in Denver, CO, based on the location reported in the CMS Medicare provider datasets for NPI 1093706475.

How much does Medicare pay Stuart Kassan?

Stuart Kassan (NPI 1093706475) received approximately $46K in total Medicare Part B payments, serving 227 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1093706475

Stuart KassanMD

PRACTICENATIONAL JEWISH HEALTHSee all providers at this practice →

RheumatologyDenver, COI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

279

Unique beneficiaries

—

Total services

427

Distinct HCPCS

Medicare payment

$46K

Peer benchmark

Total Medicare services vs. 82 Rheumatology providers in CO — bottom quintile (cohort median 33,663).

PRESCRIBING · PART D · 2024

Total Rx claims

1,181

Beneficiaries

—

Total drug cost

$188K

Distinct drugs

Brand share

15.1%

Top prescribed drugs

Hydroxychloroquine Sulfate317 claims

Prednisone186 claims

Methotrexate Sodium76 claims

Pilocarpine Hcl56 claims

Gabapentin43 claims

QUALITY · MIPS · 2024

Final MIPS score

81.8

Quality

69.4

Cost

65.2

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.29%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

Hospital

Hospital

Hospital

Hospital

REFERRAL NETWORK

Where Stuart Kassan'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). 11 inbound referrers · 21 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
NPI 1396781134	213	3,018
Ross Borzykowski Diagnostic Radiology · Boca Raton, FL	73	195
CATHOLIC HEALTH INITIATIVES COLORADO	56	253
Philip Ziporin Internal Medicine · Denver, CO	35	342
Danny Williams Rheumatology · Montrose, CO	33	109
UNIVERSITY OF COLORADO HOSPITAL AUTHORITY	17	142
Robert Brown Anesthesiology · Lakewood, CO	15	144
Inform Diagnostics, Inc. Clinical Laboratory · Coppell, TX	12	34
Kathleen Sawada Dermatology · Golden, CO	12	69
NPI 1326017526	11	23
Aaron Hebenstreit Physician Assistant · Wheat Ridge, CO	11	19

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
NPI 1396781134	262	4,659
Mudappa Kalaiah Rheumatology · Bettendorf, IA	103	702
James Shelby Diagnostic Radiology · Boca Raton, FL	99	458
Ross Borzykowski Diagnostic Radiology · Boca Raton, FL	96	440
CATHOLIC HEALTH INITIATIVES COLORADO	70	309
Steven Needell Diagnostic Radiology · Boca Raton, FL	63	275
Heather Finlayson Physician Assistant · Littleton, CO	57	253
Laboratory Corporation Of America Clinical Laboratory · Englewood, CO	49	177
Philip Ziporin Internal Medicine · Denver, CO	42	425
INTERMOUNTAIN FRONT RANGE, INC.	30	156
Danny Williams Rheumatology · Montrose, CO	24	63
Michael Ptasnik Cardiology · Lakewood, CO	24	83

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