What is Gary Sivak's specialty?

Gary Sivak (NPI 1609861772) is a Medicare-billing provider whose primary specialty is Anesthesiology in Cleveland, OH.

Where does Gary Sivak practice?

Gary Sivak practices in Cleveland, OH, based on the location reported in the CMS Medicare provider datasets for NPI 1609861772.

How much does Medicare pay Gary Sivak?

Gary Sivak (NPI 1609861772) received approximately $69K in total Medicare Part B payments, serving 942 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1609861772

Gary SivakM.D.

AnesthesiologyCleveland, OHI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

947

Unique beneficiaries

—

Total services

1,148

Distinct HCPCS

Medicare payment

$68K

Peer benchmark

Total Medicare services vs. 1,465 Anesthesiology providers in OH — top quintile (cohort median 200).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

QUALITY · MIPS · 2024

Final MIPS score

78.8

Quality

71.0

Cost

82.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.16%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Gary Sivak'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). 15 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Domenica Zuccaro Anesthesiology Assistant · Independence, OH	110	148
Tina Newton Certified Registered Nurse Anesthetist (CRNA) · Beachwood, OH	53	65
UNIVERSITY HOSPITALS CLEVELAND MEDICAL CENTER	49	84
Kathleen Zielinski Ophthalmology · Lyndhurst, OH	45	133
Mark Pophal Ophthalmology · Lyndhurst, OH	41	101
Kevin Cooper Pathology · Cleveland, OH	35	46
UNIVERSITY SUBURBAN HEALTH CENTER	26	40
Joseph Schoenberger Diagnostic Radiology · Cleveland, OH	20	33
Jayati Rakhit Internal Medicine · Cleveland, OH	16	53
Vinh Nguyen Diagnostic Radiology · Cleveland, OH	14	17
Accomodative Surgery Center, L.L.C. Ambulatory Surgical Center · Brecksville, OH	14	19
Jaime Cook Anesthesiology Assistant · Independence, OH	13	16

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