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PROVIDER PROFILE · NPI 1316966138

David ChangM.D.

OphthalmologyLos Altos, CAI
CROSS-REFERENCE

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ProviderScore
OIG/SAM exclusion screening, sanctions history
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PRESCRIBING · PART D · 2024
Total Rx claims
492
Beneficiaries
—
Total drug cost
$19K
Distinct drugs
8
Brand share
18.3%
Top prescribed drugs
Diclofenac Sodium173 claims
Prednisolone Acetate128 claims
Polymyxin B Sulf/Trimethoprim54 claims
Loteprednol Etabonate38 claims
Timolol Maleate25 claims
MEDICARE UTILIZATION · PART B · 2024
Total beneficiaries
2,565
Unique beneficiaries
—
Total services
3,315
Distinct HCPCS
11
Medicare payment
$742K
Peer benchmark
Q1
Q2
Q3
Q4
Q5
Total Medicare services vs. 2,144 Ophthalmology providers in CA — above median (cohort median 1,859).
QUALITY · MIPS · 2024
Final MIPS score
75.0
Quality
0.0
Cost
79.5
Improvement activities
0.0
Promoting interop.
0.0
Payment adjustment
0.00%
Individual
REFERRAL NETWORK

Where David 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). 12 inbound referrers · 25 outbound destinations.

Receives referrals from
Inbound — who sends patients here
PhysicianPatientsVisits
Kathryn Hawrylyshyn
Anesthesiology · Palo Alto, CA
80128
Michael Hung
Anesthesiology · Palo Alto, CA
5279
Jon Keller
Pathology · Palo Alto, CA
39120
Peter Sun
Anesthesiology · San Jose, CA
3657
EL CAMINO HOSPITAL3678
Edmund Tai
Hematology-Oncology · Mountain View, CA
36121
Alejandro Zaffaroni
Ophthalmology · Los Altos, CA
2756
NPI 14476823802136
Van Tran
Anesthesiology · Palo Alto, CA
2029
GOOD SAMARITAN HOSPITAL, L.P.1325
SILVERSTEIN, DAVID1119
Andrew Menkes
Dermatology · Mountain View, CA
1119
Refers patients to
Outbound — where patients go next
PhysicianPatientsVisits
Peninsula Eye Surgery Center Llc
Ambulatory Surgical Center · Mountain View, CA
7081,997
FLORY, TERESA332733
Michael Hung
Anesthesiology · Palo Alto, CA
124218
Shirley Liu
Anesthesiology · Palo Alto, CA
101206
DOLAN, WILLIAM97183
STANFORD HEALTH CARE85253
Unilab Corporation
Clinical Laboratory · San Jose, CA
75238
Van Tran
Anesthesiology · Palo Alto, CA
65108
Kathryn Hawrylyshyn
Anesthesiology · Palo Alto, CA
5871
Thomas Gaffey
Anesthesiology · Palo Alto, CA
56101
Laboratory Corporation Of America
Clinical Laboratory · San Diego, CA
5193
EL CAMINO HOSPITAL4597
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.
INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024
Total received
$12K
Payment records
19
By payment type
Consulting Fee$11K
Food and Beverage$752
Travel and Lodging$14