What is Lina Chan's specialty?

Lina Chan (NPI 1659358042) is a Medicare-billing provider whose primary specialty is Optometry in Walnut Creek, CA.

Where does Lina Chan practice?

Lina Chan practices in Walnut Creek, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1659358042.

How much does Medicare pay Lina Chan?

Lina Chan (NPI 1659358042) received approximately $19K in total Medicare Part B payments, serving 157 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1659358042

Lina ChanOD

OptometryWalnut Creek, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

199

Unique beneficiaries

—

Total services

228

Distinct HCPCS

Medicare payment

$16K

Peer benchmark

Total Medicare services vs. 2,493 Optometry providers in CA — above median (cohort median 147).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$619

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Prednisolone Acetate11 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$637

Payment records

By payment type

Food and Beverage$637

Top paying entities

Food and Beverage$637

REFERRAL NETWORK

Where Lina Chan'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). 3 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
VASTINE, DAVID	22	36
David Demartini Ophthalmology · Walnut Creek, CA	17	18
Mira Lim Ophthalmology · Walnut Creek, CA	15	24

Refers patients to

Outbound — where patients go next

No outbound pairs above the suppression threshold.

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.

CROSS-REFERENCE

Related data on other Healthparse brands

ProviderScore

OIG/SAM exclusion screening, sanctions history

Healthparse Signals

Monitor this provider for changes — dated NPI change events