What is John Tzagournis's specialty?

John Tzagournis (NPI 1508818998) is a Medicare-billing provider whose primary specialty is Gastroenterology in Columbus, OH.

Where does John Tzagournis practice?

John Tzagournis practices in Columbus, OH, based on the location reported in the CMS Medicare provider datasets for NPI 1508818998.

How much does Medicare pay John Tzagournis?

John Tzagournis (NPI 1508818998) received approximately $49K in total Medicare Part B payments, serving 272 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1508818998

John TzagournisM.D.

GastroenterologyColumbus, OHI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

548

Unique beneficiaries

—

Total services

629

Distinct HCPCS

Medicare payment

$45K

Peer benchmark

Total Medicare services vs. 553 Gastroenterology providers in OH — above median (cohort median 554).

PRESCRIBING · PART D · 2024

Total Rx claims

548

Beneficiaries

—

Total drug cost

$136K

Distinct drugs

Brand share

39.6%

Top prescribed drugs

Pantoprazole Sodium241 claims

Sodium, Potassium,mag Sulfates95 claims

Sodium Chloride/Nahco3/Kcl/Peg63 claims

Mesalamine39 claims

Linaclotide32 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$373

Payment records

By payment type

Food and Beverage$373

Top paying entities

Food and Beverage$373

REFERRAL NETWORK

Where John Tzagournis'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). 33 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
OHIOHEALTH CORPORATION	180	344
Grant Scope Center, Llc Ambulatory Surgical Center · Columbus, OH	96	240
HAUER, CHRISTOPHER	46	96
OHIO STATE UNIVERSITY HOSPITALS	34	108
FAIRFIELD MEDICAL CENTER	33	135
Gordon Kim Gastroenterology · Columbus, OH	28	46
Adam Tzagournis Gastroenterology · Columbus, OH	23	50
Harlan Meyer Diagnostic Radiology · Columbus, OH	23	40
MAYNARD, PRISCA	22	52
OHIOHEALTH CORPORATION	19	50
Vikram Krishnasetty Diagnostic Radiology · Greensboro, NC	17	26
Andrew Burke Diagnostic Radiology · Lakewood, CO	16	20

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