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PROVIDER PROFILE · NPI 1528282050

Shannon MarekM.D.

PRACTICEWILLIAM KERN DESCHNER MD PA GASTROENTEROLOGY OF SAN MARCOSSee all providers at this practice →
GastroenterologySan Marcos, TXI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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QUALITY · MIPS · 2024
Final MIPS score
81.0
Quality
66.5
Cost
71.8
Improvement activities
40.0
Promoting interop.
98.0
Payment adjustment
0.25%
Group
PRESCRIBING · PART D · 2024
Total Rx claims
1,588
Beneficiaries
—
Total drug cost
$434K
Distinct drugs
20
Brand share
31.0%
Top prescribed drugs
Pantoprazole Sodium671 claims
Omeprazole173 claims
Sod Picosulf/Mag Ox/Citric Ac136 claims
Sodium Chloride/Nahco3/Kcl/Peg123 claims
Sucralfate77 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$2K
Payment records
82
By payment type
Food and Beverage$2K
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,079
Unique beneficiaries
—
Total services
1,151
Distinct HCPCS
15
Medicare payment
$122K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 1,103 Gastroenterology providers in TX — top quintile (cohort median 699).
REFERRAL NETWORK

Where Shannon Marek'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). 18 inbound referrers · 0 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
CHRISTUS SANTA ROSA HEALTH CARE CORPORATION162429
Christus Santa Rosa Outpatient Surgery - New Braunfels, Lp
Ambulatory Surgical Center · New Braunfels, TX
119316
Clinical Pathology Laboratories, Inc.
Clinical Laboratory · Austin, TX
97319
Richard Hensley
Pathology · San Antonio, TX
74165
Virginia Van Horn
Certified Registered Nurse Anesthetist (CRNA) · Live Oak, TX
66147
Lindsey Smith-Dunford
Certified Registered Nurse Anesthetist (CRNA) · San Marcos, TX
62151
Wendell Holladay
Certified Registered Nurse Anesthetist (CRNA) · San Marcos, TX
57150
RESOLUTE HOSPITAL COMPANY, LLC3257
MILBOURN, JOHN3058
Preston Taylor
Certified Registered Nurse Anesthetist (CRNA) · San Marcos, TX
2464
San Marcos-Hays County Emergency Medical Services Incorporated
Ambulance Service Provider · San Marcos, TX
1530
Eric Francis
Family Practice · New Braunfels, TX
1339
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.