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PROVIDER PROFILE · NPI 1487627261

Paul ChangM.D.

PRACTICECHANGSOO MEDICAL GROUPSee all providers at this practice →
Internal MedicineBuena Park, CAI
CROSS-REFERENCE

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REFERRAL NETWORK

Where Paul Chang'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). 17 inbound referrers · 42 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Unilab Corporation
Clinical Laboratory · West Hills, CA
65183
Sung Yoo
Gastroenterology · Diamond Bar, CA
64205
Paul Lee
Ophthalmology · Garden Grove, CA
4094
Edward Rhee
Podiatry · Los Angeles, CA
34106
Tae Kim
Ophthalmology · Cerritos, CA
3277
Colima Endoscopy Center Inc
Ambulatory Surgical Center · Diamond Bar, CA
2646
Raveen Arora
Cardiology · Anaheim, CA
22165
AMBULO, PAUL ANDRE22217
Chin Kim
Internal Medicine · Anaheim, CA
2165
ST JUDE HOSPITAL INC1646
Junghwan Choi
Urology · Garden Grove, CA
1529
Nicholas Kim
Internal Medicine · Anaheim, CA
14131
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Physicians Immunodiagnostic Laboratory, Inc.
Clinical Laboratory · Burbank, CA
4441,698
Sung Yoo
Gastroenterology · Diamond Bar, CA
77257
Joseph Lee
Ophthalmology · Buena Park, CA
73241
Linda Hwa
Diagnostic Radiology · Whittier, CA
66121
Sang Chae Kwak
Physical Therapist in Private Practice · Garden Grove, CA
43743
Paul Lee
Ophthalmology · Garden Grove, CA
4298
Unilab Corporation
Clinical Laboratory · West Hills, CA
40137
Colima Endoscopy Center Inc
Ambulatory Surgical Center · Diamond Bar, CA
3975
Dan Lee
Diagnostic Radiology · Anaheim, CA
3959
Abacus Business Corporation Group Inc.
Clinical Laboratory · Los Angeles, CA
3284
Tae Kim
Ophthalmology · Cerritos, CA
3259
Sang Ahn
Hematology-Oncology · Los Angeles, CA
31155
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
1,636
Unique beneficiaries
—
Total services
2,395
Distinct HCPCS
20
Medicare payment
$161K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 10,499 Internal Medicine providers in CA — top quintile (cohort median 531).
PRESCRIBING · PART D · 2024
Total Rx claims
34,393
Beneficiaries
—
Total drug cost
$4.6M
Distinct drugs
184
Brand share
22.6%
Top prescribed drugs
Rosuvastatin Calcium2,883 claims
Losartan Potassium2,384 claims
Atorvastatin Calcium2,285 claims
Amlodipine Besylate2,150 claims
Metformin Hcl1,712 claims
QUALITY · MIPS · 2024
No data available for this provider in 2024.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$3K
Payment records
122
By payment type
Food and Beverage$2K
Education$90