What is Michael Grassi's specialty?

Michael Grassi (NPI 1689666885) is a Medicare-billing provider whose primary specialty is Ophthalmology in Naperville, IL.

Where does Michael Grassi practice?

Michael Grassi practices in Naperville, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1689666885.

How much does Medicare pay Michael Grassi?

Michael Grassi (NPI 1689666885) received approximately $1.7M in total Medicare Part B payments, serving 441 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1689666885

Michael GrassiMD

OphthalmologyNaperville, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

2,377

Unique beneficiaries

—

Total services

7,917

Distinct HCPCS

Medicare payment

$1.7M

Peer benchmark

Total Medicare services vs. 667 Ophthalmology providers in IL — top quintile (cohort median 2,192).

PRESCRIBING · PART D · 2024

Total Rx claims

126

Beneficiaries

—

Total drug cost

$4K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Dorzolamide Hcl74 claims

Prednisolone Acetate25 claims

Ketorolac Tromethamine16 claims

Brimonidine Tartrate11 claims

QUALITY · MIPS · 2024

Final MIPS score

100.0

Quality

100.0

Cost

0.0

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

1.05%

Individual

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Michael Grassi'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). 5 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
COPLEY MEMORIAL HOSPITAL, INC.	28	62
EDWARD HOSPITAL	19	48
VALLEY WEST COMMUNITY HOSPITAL	16	48
Nicole Zangler Optometry · Yorkville, IL	15	28
ADVOCATE HEALTH AND HOSPITALS CORPORATION	13	23

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