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PROVIDER PROFILE · NPI 1386807402

Gwendolen ChangM.D.

NephrologySan Leandro, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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PricingContactPrivacyTerms
QUALITY · MIPS · 2024
Final MIPS score
96.8
Quality
88.2
Cost
73.0
Improvement activities
40.0
Promoting interop.
94.0
Payment adjustment
0.92%
Individual
PRESCRIBING · PART D · 2024
Total Rx claims
1,917
Beneficiaries
—
Total drug cost
$696K
Distinct drugs
43
Brand share
26.7%
Top prescribed drugs
Amlodipine Besylate260 claims
Dapagliflozin Propanediol176 claims
Furosemide118 claims
Bumetanide110 claims
Allopurinol105 claims
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$1K
Payment records
53
By payment type
Food and Beverage$1K
Education$72
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
1,059
Unique beneficiaries
—
Total services
2,392
Distinct HCPCS
16
Medicare payment
$269K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 985 Nephrology providers in CA — above median (cohort median 1,482).
REFERRAL NETWORK

Where Gwendolen 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). 78 inbound referrers · 115 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
ALAMEDA HEALTH SYSTEM126428
AL-BANDER, HAMOUDI105435
Archana Aggarwal
Nephrology · Castro Valley 94546, CA
70156
Royal Ambulance Inc.
Ambulance Service Provider · San Leandro, CA
50651
Michael Ingegno
Vascular Surgery · San Leandro, CA
49170
MOSCOW, NORMAN48105
Robert Gingery
Vascular Surgery · San Leandro, CA
47192
Keyvan Nouri
Diagnostic Radiology · Walnut Creek, CA
4698
NPI 101302931344190
Lamont Paxton
Vascular Surgery · San Leandro, CA
43153
Rubinder Kaur
Internal Medicine · San Leandro, CA
42221
Robert Mccabe
Infectious Disease · Pleasanton, CA
41192
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
AL-BANDER, HAMOUDI110388
Protransport 1
Ambulance Service Provider · Rohnert Park, CA
71155
ALAMEDA HEALTH SYSTEM65242
PARAMEDICS PLUS, LLC62147
Royce Chrys
Diagnostic Radiology · Walnut Creek, CA
61133
Mark Goldsmith
Diagnostic Radiology · Walnut Creek, CA
60126
Royal Ambulance Inc.
Ambulance Service Provider · San Leandro, CA
56727
Archana Aggarwal
Nephrology · Castro Valley 94546, CA
52126
Robert Gingery
Vascular Surgery · San Leandro, CA
48177
SUTTER MEDICAL CENTER CASTRO VALLEY48133
Kathryn Welty
Nephrology · Castro Valley, CA
48148
Hussain Gilani
Nephrology · Oakland, CA
48122
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.