What is Mark Lazarev's specialty?

Mark Lazarev (NPI 1104094739) is a Medicare-billing provider whose primary specialty is Gastroenterology in Baltimore, MD.

Where does Mark Lazarev practice?

Mark Lazarev practices in Baltimore, MD, based on the location reported in the CMS Medicare provider datasets for NPI 1104094739.

How much does Medicare pay Mark Lazarev?

Mark Lazarev (NPI 1104094739) received approximately $575K in total Medicare Part B payments, serving 431 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1104094739

Mark LazarevM.D.

GastroenterologyBaltimore, MDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

766

Unique beneficiaries

—

Total services

17,321

Distinct HCPCS

Medicare payment

$344K

Peer benchmark

Total Medicare services vs. 343 Gastroenterology providers in MD — top quintile (cohort median 894).

PRESCRIBING · PART D · 2024

Total Rx claims

708

Beneficiaries

—

Total drug cost

$6.4M

Distinct drugs

Brand share

57.9%

Top prescribed drugs

Ustekinumab164 claims

Mesalamine93 claims

Omeprazole54 claims

Diphenoxylate Hcl/Atropine41 claims

Infliximab36 claims

QUALITY · MIPS · 2024

Final MIPS score

83.3

Quality

73.9

Cost

70.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.35%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$3K

Payment records

129

By payment type

Food and Beverage$3K

Top paying entities

Food and Beverage$3K

FACILITY AFFILIATIONS

Hospital & Facility Affiliations (3)

CCN 090005

Hospital

CCN 210009

Hospital

CCN 210029

Hospital

REFERRAL NETWORK

Where Mark Lazarev'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). 1 inbound referrers · 5 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	11	16

Refers patients to

Outbound — where patients go next

Physician	Patients	Visits
THE JOHNS HOPKINS HOSPITAL	95	316
Lysandra Voltaggio Pathology · Silver Spring, MD	16	34
Elizabeth Montgomery Pathology · Miami, FL	15	33
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	13	26
JOHNS HOPKINS BAYVIEW MEDICAL CENTER INC	11	42

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