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PROVIDER PROFILE · NPI 1992770390

Mark FesenmyerMD

PRACTICEINTERNAL MEDICINE ASSOCIATESSee all providers at this practice →
GastroenterologyMerrillville, INI
CROSS-REFERENCE

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OIG/SAM exclusion screening, sanctions history
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MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,054
Unique beneficiaries
—
Total services
1,213
Distinct HCPCS
16
Medicare payment
$113K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 249 Gastroenterology providers in IN — top quintile (cohort median 598).
PRESCRIBING · PART D · 2024
Total Rx claims
1,245
Beneficiaries
—
Total drug cost
$160K
Distinct drugs
20
Brand share
30.5%
Top prescribed drugs
Pantoprazole Sodium321 claims
Peg3350/Sod Sulf,bicarb,cl/Kcl219 claims
Omeprazole165 claims
Nortriptyline Hcl87 claims
Dicyclomine Hcl78 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$1K
Payment records
56
By payment type
Food and Beverage$1K
REFERRAL NETWORK

Where Mark Fesenmyer'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). 101 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Peter Mavrelis
Gastroenterology · Hobart, IN
2271,264
Ahmad Shughoury
Gastroenterology · Merrillville, IN
2171,176
John Gustaitis
Diagnostic Radiology · Munster, IN
205807
Edward Bok
Diagnostic Radiology · Saint Louis, MO
153818
THE METHODIST HOSPITALS, INC143338
Devang Doshi
Diagnostic Radiology · Munster, IN
108393
JEHA, MIKHAIL105337
Feng Zhang
Diagnostic Radiology · Munster, IN
97378
Kais Yehyawi
Cardiology · Portage, IN
97317
Charisa Spoo
Diagnostic Radiology · Oak Lawn, IL
96466
Eric Schulte
Cardiology · Merrillville, IN
93559
Abdul Kawamleh
Cardiology · Portage, IN
75290
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.