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 1033292792

Joseph Hartmann

Emergency MedicineAnn Arbor, MII
CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore
OIG/SAM exclusion screening, sanctions history
© 2026 CareTrace
PricingContactPrivacyTerms
QUALITY · MIPS · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where Joseph Hartmann'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). 5 inbound referrers · 79 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
REGENTS OF THE UNIVERSITY OF MICHIGAN4551,774
REGENTS OF THE UNIVERSITY OF MICHIGAN72102
Perry Pernicano
Diagnostic Radiology · Ann Arbor, MI
1731
Mohamed Sayyouh
Diagnostic Radiology · Ann Arbor, MI
1423
REGENTS OF THE UNIVERSITY OF MICHIGAN1117
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
REGENTS OF THE UNIVERSITY OF MICHIGAN3031,260
REGENTS OF THE UNIVERSITY OF MICHIGAN165321
Huron Valley Ambulance Inc
Ambulance Service Provider · Ann Arbor, MI
132300
Fred Morady
Clinical Cardiac Electrophysiology · Ann Arbor, MI
130249
Peter Farrehi
Cardiology · Ann Arbor, MI
87150
REGENTS OF THE UNIVERSITY OF MICHIGAN72106
Ursula Knoepp
Diagnostic Radiology · Ann Arbor, MI
66101
Michael Lehmann
Internal Medicine · Northville, MI
65101
Michael Mazza
Diagnostic Radiology · Ann Arbor, MI
6097
Suzanne Cho
Diagnostic Radiology · Indianapolis, IN
5384
Elina Yamada
Cardiology · Ann Arbor, MI
4372
Carrie Hoff
Diagnostic Radiology · Ann Arbor, MI
4272
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.