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PROVIDER PROFILE · NPI 1265561211

John MaherM.D.

OphthalmologyTorrance, CAI
CROSS-REFERENCE

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FACILITY AFFILIATIONS

Hospital & Facility Affiliations (1)

CCN 050353
Hospital
QUALITY · MIPS · 2024
Final MIPS score
75.0
Quality
26.7
Cost
80.4
Improvement activities
0.0
Promoting interop.
0.0
Payment adjustment
0.00%
Individual
PRESCRIBING · PART D · 2024
Total Rx claims
2,041
Beneficiaries
—
Total drug cost
$108K
Distinct drugs
18
Brand share
14.3%
Top prescribed drugs
Prednisolone Acetate531 claims
Latanoprost428 claims
Ofloxacin362 claims
Timolol Maleate161 claims
Brimonidine Tartrate110 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
5,167
Unique beneficiaries
—
Total services
6,399
Distinct HCPCS
23
Medicare payment
$609K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 2,144 Ophthalmology providers in CA — top quintile (cohort median 1,859).
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$250
Payment records
2
By payment type
Food and Beverage$250
REFERRAL NETWORK

Where John Maher'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). 29 inbound referrers · 72 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
TORRANCE MEMORIAL MEDICAL CENTER259480
Unilab Corporation
Clinical Laboratory · West Hills, CA
147265
PATHOLOGY, INC.3153
WEST COAST CLINICAL LABORATORIES, INC.2943
NPI 10130253942761
Emilio Padre
General Practice · Carson, CA
2259
John Tsao
Internal Medicine · Torrance, CA
2144
Richard Sullivan
Diagnostic Radiology · Torrance, CA
1924
Kamran Matin
Cardiology · Torrance, CA
1830
Westmed Ambulance Inc
Ambulance Service Provider · Compton, CA
1721
PROVIDENCE HEALTH SYSTEM - SOUTHERN CALIFORNIA1733
Fred Reitler
Family Practice · Torrance, CA
1642
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Torrance Surgery Center, Lp
Ambulatory Surgical Center · Torrance, CA
309811
TORRANCE MEMORIAL MEDICAL CENTER242465
RAHM, DAVID225534
Laboratory Corporation Of America
Clinical Laboratory · San Diego, CA
169285
Unilab Corporation
Clinical Laboratory · West Hills, CA
123230
PROVIDENCE HEALTH SYSTEM SOUTHERN CALIFORNIA86137
Ron Gallemore
Ophthalmology · Torrance, CA
62133
PATHOLOGY, INC.3556
WEST COAST CLINICAL LABORATORIES, INC.3239
DELVICARIO, MICHELE2961
CALIFORNIA LABORATORY SCIENCES LLC2946
Westmed Ambulance Inc
Ambulance Service Provider · Compton, CA
2527
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.