What is Gary Leiserowitz's specialty?

Gary Leiserowitz (NPI 1871575142) is a Medicare-billing provider whose primary specialty is Gynecological Oncology in Sacramento, CA.

Where does Gary Leiserowitz practice?

Gary Leiserowitz practices in Sacramento, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1871575142.

How much does Medicare pay Gary Leiserowitz?

Gary Leiserowitz (NPI 1871575142) received approximately $39K in total Medicare Part B payments, serving 111 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1871575142

Gary LeiserowitzM.D.

Gynecological OncologySacramento, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

126

Unique beneficiaries

—

Total services

141

Distinct HCPCS

Medicare payment

$17K

Peer benchmark

Total Medicare services vs. 98 Gynecological Oncology providers in CA — bottom quintile (cohort median 454).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$81

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Anastrozole12 claims

QUALITY · MIPS · 2024

Final MIPS score

83.2

Quality

64.8

Cost

68.7

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.34%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Gary Leiserowitz'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 · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
TOMIC, MARY	30	122
Eric Huang Pathology · Seattle, WA	21	64
Scott Evans Diagnostic Radiology · Wheat Ridge, CO	20	48
AFIFY, ALAA	20	54
Eugenia Girda Obstetrics & Gynecology · New Brunswick, NJ	19	44
Friedrich Knollmann Diagnostic Radiology · Philadelphia, PA	18	54
Ruth Stephenson Gynecological Oncology · New Brunswick, NJ	17	62
Huong Bach Internal Medicine · Sacramento, CA	15	73
John Livoni Diagnostic Radiology · Rolling Hills Estates, CA	13	23
MILLSTEIN, ARAM	11	28
Patricia Takeda Cardiology · Sacramento, CA	11	32

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