What is John Zwiener's specialty?

John Zwiener (NPI 1518038496) is a Medicare-billing provider whose primary specialty is Pathology in Carlsbad, NM.

Where does John Zwiener practice?

John Zwiener practices in Carlsbad, NM, based on the location reported in the CMS Medicare provider datasets for NPI 1518038496.

How much does Medicare pay John Zwiener?

John Zwiener (NPI 1518038496) received approximately $24K in total Medicare Part B payments, serving 343 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1518038496

John ZwienerMD

PathologyCarlsbad, NMI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

476

Unique beneficiaries

—

Total services

920

Distinct HCPCS

Medicare payment

$22K

Peer benchmark

Total Medicare services vs. 68 Pathology providers in NM — above median (cohort median 691).

PRESCRIBING · PART D · 2024

No data available for this provider in 2024.

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 John Zwiener'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). 22 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Abdul Qureshi General Surgery · Carlsbad, NM	137	471
HAMMER, RICHARD	66	128
SIMS, MICHAEL	62	109
Lance Dell Diagnostic Radiology · Albuquerque, NM	60	83
Jeremy Bison Certified Registered Nurse Anesthetist (CRNA) · Carlsbad, NM	46	60
Lisa Vellinga Certified Registered Nurse Anesthetist (CRNA) · Mesquite, NV	41	46
TRICORE REFERENCE LABORATORIES	35	74
Jennifer Knight Certified Registered Nurse Anesthetist (CRNA) · Vestavia, AL	28	30
Roberto Perez-Gautrin Diagnostic Radiology · Boston, MA	21	28
Patrick Connor Emergency Medicine · Ruidoso, NM	20	30
Kim Lark Family Practice · Carlsbad, NM	19	34
PRESBYTERIAN MEDICAL SERVICES	18	22

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