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PROVIDER PROFILE · NPI 1073554531

Robert KollenM.D

Emergency MedicineColton, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (4)

CCN 051308
Hospital
CCN 051330
Hospital
CCN 051338
Hospital
CCN 05Z308
Nursing home
QUALITY · MIPS · 2024
No data available for this provider in 2024.
PRESCRIBING · PART D · 2024
Total Rx claims
917
Beneficiaries
—
Total drug cost
$34K
Distinct drugs
43
Brand share
17.1%
Top prescribed drugs
Zolpidem Tartrate50 claims
Levothyroxine Sodium41 claims
Hydrocodone/Acetaminophen37 claims
Lisinopril36 claims
Atorvastatin Calcium34 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
No data available for this provider in 2024.
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
26
Unique beneficiaries
—
Total services
28
Distinct HCPCS
2
Medicare payment
$3K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 5,287 Emergency Medicine providers in CA — bottom quintile (cohort median 355).
REFERRAL NETWORK

Where Robert Kollen'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). 16 inbound referrers · 80 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
TULARE LOCAL HEALTH CARE DISTRICT99332
DOCTORS MEDICAL CENTER OF MODESTO, INC.59142
Frank Macaluso
Diagnostic Radiology · Tulare, CA
58176
ALTURA CENTERS FOR HEALTH3595
LIN, JOHN3262
Parmod Kumar
Gastroenterology · Porterville, CA
2779
SMITH, RONALD1641
Richard Haak
Interventional Radiology · Modesto, CA
1627
Obadiah Elkins
Diagnostic Radiology · Fresno, CA
1523
TULARE LOCAL HEALTH CARE DISTRICT1327
Shashi Sharma
Cardiology · Visalia, CA
1250
Kit Duong
Internal Medicine · Modesto, CA
1230
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
TULARE LOCAL HEALTH CARE DISTRICT273860
DOCTORS MEDICAL CENTER OF MODESTO, INC.199440
Frank Macaluso
Diagnostic Radiology · Tulare, CA
177573
LIN, JOHN111249
Sierra Lifestar Inc.,
Ambulance Service Provider · Tulare, CA
104279
SMITH, PRUDENCE104252
American Medical Response West
Ambulance Service Provider · Modesto, CA
79168
Saqib Rashid
Internal Medicine · Tulare, CA
56254
Richard Haak
Interventional Radiology · Modesto, CA
5197
Kit Duong
Internal Medicine · Modesto, CA
51119
Thomas Rhodeman
Interventional Radiology · Modesto, CA
5091
KAWEAH DELTA HEALTH CARE DISTRICT46128
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.