What is David Grinblatt's specialty?

David Grinblatt (NPI 1548285372) is a Medicare-billing provider whose primary specialty is Hematology in Evanston, IL.

Where does David Grinblatt practice?

David Grinblatt practices in Evanston, IL, based on the location reported in the CMS Medicare provider datasets for NPI 1548285372.

How much does Medicare pay David Grinblatt?

David Grinblatt (NPI 1548285372) received approximately $151K in total Medicare Part B payments, serving 569 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1548285372

David GrinblattMD

HematologyEvanston, ILI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,182

Unique beneficiaries

—

Total services

2,271

Distinct HCPCS

Medicare payment

$148K

Peer benchmark

Total Medicare services vs. 19 Hematology providers in IL — above median (cohort median 2,308).

PRESCRIBING · PART D · 2024

Total Rx claims

1,638

Beneficiaries

—

Total drug cost

$7.7M

Distinct drugs

Brand share

39.4%

Top prescribed drugs

Acyclovir295 claims

Sulfamethoxazole/Trimethoprim138 claims

Hydroxyurea137 claims

Lenalidomide118 claims

Venetoclax83 claims

QUALITY · MIPS · 2024

Final MIPS score

84.9

Quality

75.9

Cost

74.6

Improvement activities

40.0

Promoting interop.

99.0

Payment adjustment

0.42%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where David Grinblatt'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). 36 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
ENDEAVOR HEALTH CLINICAL OPERATIONS	353	5,465
ELDIBANY, MOHAMED	43	301
Carolyn Donaldson Diagnostic Radiology · Evanston, IL	30	127
Christopher Kay Diagnostic Radiology · Evanston, IL	29	114
Gary Turkel Diagnostic Radiology · Maywood, IL	27	180
Sara Reynolds Nurse Practitioner · Evanston, IL	26	201
Mark Lampert Cardiology · Skokie, IL	24	163
David Najman Cardiology · Skokie, IL	22	113
NORTHWESTERN MEMORIAL HOSPITAL	18	98
Geraldine Newmark Diagnostic Radiology · Evanston, IL	16	40
Doris Yip Diagnostic Radiology · Evanston, IL	16	96
JASIELEC, JAGODA	16	140

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