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PROVIDER PROFILE · NPI 1295799005

John IsaacM.D.

CardiologyHouston, TXI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (5)

CCN 673185
Home health agency
CCN 450358
Hospital
CCN 450775
Hospital
CCN 450844
Hospital
CCN 670122
Hospital
REFERRAL NETWORK

Where John Isaac'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). 28 inbound referrers · 58 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Quest Diagnostics Clinical Laboratories Inc
Clinical Laboratory · Houston, TX
126585
Stanley Duchman
Interventional Cardiology · Houston, TX
63263
NORTH CYPRESS MEDICAL CENTER OPERATING COMPANY, LTD.59176
Glenn Davis
Internal Medicine · Spring, TX
3469
Sanjay Kunapuli
Interventional Cardiology · Houston, TX
28106
UNIVERSITY OF TEXAS M. D. ANDERSON CANCER CENTER2688
CARDIODX, INC.2651
Dileep Puppala
Pulmonary Disease · Houston, TX
2350
Nam Yu
Diagnostic Radiology · Los Angeles, CA
2171
Faisal Nabi
Cardiology · Houston, TX
2036
John Haddad
Diagnostic Radiology · Houston, TX
1951
Chun Lin
Interventional Cardiology · San Francisco, CA
1950
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
HEALTH DIAGNOSTIC LABORATORY, INCORPORATED311939
METHODIST HEALTH CENTERS133464
Quest Diagnostics Clinical Laboratories Inc
Clinical Laboratory · Houston, TX
132510
Stanley Duchman
Interventional Cardiology · Houston, TX
97420
THE METHODIST HOSPITAL83364
Laboratory Corporation Of America
Clinical Laboratory · Houston, TX
67196
NORTH CYPRESS MEDICAL CENTER OPERATING COMPANY, LTD.57156
SPECTOCOR, LLC53206
Glenn Davis
Internal Medicine · Spring, TX
45109
Sanjay Kunapuli
Interventional Cardiology · Houston, TX
31128
Sterling Ems, Llc
Ambulance Service Provider · Coppell, TX
3075
UNIVERSITY OF TEXAS M. D. ANDERSON CANCER CENTER2882
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.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
5,674
Unique beneficiaries
—
Total services
9,358
Distinct HCPCS
38
Medicare payment
$1.8M
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 1,379 Cardiology providers in TX — top quintile (cohort median 2,215).
PRESCRIBING · PART D · 2024
Total Rx claims
18,211
Beneficiaries
—
Total drug cost
$4.7M
Distinct drugs
86
Brand share
33.3%
Top prescribed drugs
Ezetimibe2,335 claims
Rosuvastatin Calcium1,749 claims
Atorvastatin Calcium1,643 claims
Evolocumab1,403 claims
Metoprolol Succinate1,146 claims
QUALITY · MIPS · 2024
Final MIPS score
75.0
Quality
0.0
Cost
0.0
Improvement activities
0.0
Promoting interop.
0.0
Payment adjustment
0.00%
Group
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$200K
Payment records
417
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$161K
Travel and Lodging$27K
Food and Beverage$11K
Consulting Fee$600