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PROVIDER PROFILE · NPI 1487739553

William ArmstrongMD

CardiologyAnn Arbor, MII
CROSS-REFERENCE

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MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,080
Unique beneficiaries
—
Total services
1,100
Distinct HCPCS
10
Medicare payment
$40K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 628 Cardiology providers in MI — below median (cohort median 1,777).
PRESCRIBING · PART D · 2024
Total Rx claims
1,304
Beneficiaries
—
Total drug cost
$309K
Distinct drugs
28
Brand share
25.0%
Top prescribed drugs
Apixaban176 claims
Atorvastatin Calcium142 claims
Metoprolol Succinate130 claims
Lisinopril91 claims
Metoprolol Tartrate84 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
REFERRAL NETWORK

Where William Armstrong'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). 72 inbound referrers · 143 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
REGENTS OF THE UNIVERSITY OF MICHIGAN1,1605,492
REGENTS OF THE UNIVERSITY OF MICHIGAN158340
Mohamed Sayyouh
Diagnostic Radiology · Ann Arbor, MI
94153
Aamer Chughtai
Diagnostic Radiology · Ann Arbor, MI
90161
Aine Kelly
Diagnostic Radiology · Ann Arbor, MI
4568
Daniel Menees
Interventional Cardiology · Ann Arbor, MI
4595
Peter Hagan
Cardiology · Brighton, MI
4475
Perry Pernicano
Diagnostic Radiology · Ann Arbor, MI
4366
Dharshan Vummidi
Diagnostic Radiology · Ann Arbor, MI
4265
Jadranka Stojanovska
Diagnostic Radiology · New York, NY
3871
Smita Patel
Diagnostic Radiology · Ann Arbor, MI
3660
Santhi Ganesh
Cardiology · Ann Arbor, MI
3683
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
REGENTS OF THE UNIVERSITY OF MICHIGAN7263,234
REGENTS OF THE UNIVERSITY OF MICHIGAN4531,359
Fred Morady
Clinical Cardiac Electrophysiology · Ann Arbor, MI
181401
REGENTS OF THE UNIVERSITY OF MICHIGAN154320
Frank Pelosi
Clinical Cardiac Electrophysiology · Ann Arbor, MI
124228
Peter Farrehi
Cardiology · Ann Arbor, MI
119235
Michael Lehmann
Internal Medicine · Northville, MI
113236
Huron Valley Ambulance Inc
Ambulance Service Provider · Ann Arbor, MI
111178
James Froehlich
Cardiology · Ann Arbor, MI
107413
ST JOSEPH MERCY CHELSEA INC94261
Elina Yamada
Cardiology · Ann Arbor, MI
91208
Ella Kazerooni
Diagnostic Radiology · Ann Arbor, MI
63105
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.