What is Mark Nitzberg's specialty?

Mark Nitzberg (NPI 1881652758) is a Medicare-billing provider whose primary specialty is Gastroenterology in Methuen, MA.

Where does Mark Nitzberg practice?

Mark Nitzberg practices in Methuen, MA, based on the location reported in the CMS Medicare provider datasets for NPI 1881652758.

How much does Medicare pay Mark Nitzberg?

Mark Nitzberg (NPI 1881652758) received approximately $33K in total Medicare Part B payments, serving 230 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1881652758

Mark NitzbergM.D.

GastroenterologyMethuen, MAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

260

Unique beneficiaries

—

Total services

270

Distinct HCPCS

Medicare payment

$28K

Peer benchmark

Total Medicare services vs. 483 Gastroenterology providers in MA — below median (cohort median 638).

PRESCRIBING · PART D · 2024

Total Rx claims

713

Beneficiaries

—

Total drug cost

$23K

Distinct drugs

Brand share

11.9%

Top prescribed drugs

Omeprazole222 claims

Atorvastatin Calcium66 claims

Pantoprazole Sodium54 claims

Losartan Potassium35 claims

Peg3350/Sod Sulf,bicarb,cl/Kcl33 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Mark Nitzberg'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). 27 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
STEWARD HOLY FAMILY HOSPITAL, INC.	159	473
Quest Diagnostics Massachusetts Llc Clinical Laboratory · Marlborough, MA	77	214
Liliane Yacoub Pathology · Methuen, MA	45	79
Orchard Surgical Center, Llc Ambulatory Surgical Center · Salem, NH	43	59
Robert Beechinor Anesthesiology · Lowell, MA	42	69
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	31	81
Stewart Hou Diagnostic Radiology · Lawrence, MA	30	47
Christian Nguyen Diagnostic Radiology · Lawrence, MA	26	40
Dipti Lenhart Diagnostic Radiology · Lawrence, MA	26	41
Arthur Zerbey Diagnostic Radiology · Lawrence, MA	23	39
SALZMAN, LINDA	22	36
Megha Joshi Pathology · Lawrence, MA	20	44

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