caretrace.iopowered by▸healthparse
SearchCohort Builder
Tools▾
KOL FinderTerritoriesDrug Compare
AI Query
Browse▾
By stateBy specialty
Pricing
SearchCohort BuilderToolsKOL FinderTerritoriesDrug CompareAI QueryBrowseBy stateBy specialtyPricing
PROVIDER PROFILE · NPI 1013923127

Mark JohnsonMD

PRACTICENORTH IOWA MERCY CLINICSSee all providers at this practice →
EndocrinologyMason City, IAI
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

CCN 160064
Hospital
CCN 161307
Hospital
CCN 161308
Hospital
CCN 161347
Hospital
CCN 161353
Hospital
REFERRAL NETWORK

Where Mark Johnson'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). 114 inbound referrers · 222 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
MERCY HEALTH SERVICES-IOWA CORP1,0437,245
Gary Swenson
Diagnostic Radiology · Mason City, IA
188405
Travis Petree
Internal Medicine · Minot, ND
168395
Robert Berg
Interventional Radiology · Mason City, IA
165373
Byron Beasley
Cardiology · Mason City, IA
157518
Gholam Zadeii
Internal Medicine · Rancho Mirage, CA
156542
Satinderjit Singh
Emergency Medicine · Mason City, IA
155327
William Matthews
Diagnostic Radiology · Mason City, IA
149323
Ryan Smith
Diagnostic Radiology · Mason City, IA
129250
JANSON, BRAD122262
NPI 1104933142121598
Burt Humburg
Internal Medicine · Mason City, IA
120376
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
MERCY HEALTH SERVICES-IOWA CORP1,3179,811
Gary Swenson
Diagnostic Radiology · Mason City, IA
307547
City Of Mason City
Ambulance Service Provider · Mason City, IA
236524
Gholam Zadeii
Internal Medicine · Rancho Mirage, CA
235661
Travis Petree
Internal Medicine · Minot, ND
213394
JANSON, BRAD210342
Joseph Ocel
Diagnostic Radiology · Mason City, IA
201350
William Matthews
Diagnostic Radiology · Mason City, IA
200382
Robert Berg
Interventional Radiology · Mason City, IA
194365
Byron Beasley
Cardiology · Mason City, IA
194568
Ryan Smith
Diagnostic Radiology · Mason City, IA
190361
Timothy Lucas
Diagnostic Radiology · Mason City, IA
180314
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.
PRESCRIBING · PART D · 2024
Total Rx claims
9,572
Beneficiaries
—
Total drug cost
$5.0M
Distinct drugs
65
Brand share
79.2%
Top prescribed drugs
Semaglutide1,205 claims
Empagliflozin749 claims
Insulin Aspart492 claims
Insulin Glargine/Lixisenatide475 claims
Dulaglutide381 claims
QUALITY · MIPS · 2024
Final MIPS score
81.5
Quality
73.9
Cost
70.4
Improvement activities
40.0
Promoting interop.
93.0
Payment adjustment
0.28%
Group
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$17K
Payment records
47
By payment type
Compensation for services other than consulting, including serving as faculty or as a speaker at a venue other than a continuing education program$15K
Travel and Lodging$1K
Food and Beverage$763
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
2,269
Unique beneficiaries
—
Total services
3,849
Distinct HCPCS
6
Medicare payment
$105K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 36 Endocrinology providers in IA — top quintile (cohort median 639).