PROVIDER PROFILE · NPI 1912900218

David MarkM.D.

PRACTICESILICON VALLEY EYE PHYSICIANSSee all providers at this practice →

OphthalmologySunnyvale, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

565

Unique beneficiaries

—

Total services

622

Distinct HCPCS

Medicare payment

$58K

Peer benchmark

Total Medicare services vs. 2,144 Ophthalmology providers in CA — below median (cohort median 1,859).

PRESCRIBING · PART D · 2024

Total Rx claims

380

Beneficiaries

—

Total drug cost

$9K

Distinct drugs

Brand share

16.1%

Top prescribed drugs

Latanoprost196 claims

Timolol Maleate65 claims

Tobramycin/Dexamethasone38 claims

Prednisolone Acetate32 claims

Brimonidine Tartrate14 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where David Mark'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). 5 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
EL CAMINO HOSPITAL	57	156
Edmund Tai Hematology-Oncology · Mountain View, CA	47	156
Jon Keller Pathology · Palo Alto, CA	17	59
Michael Hung Anesthesiology · Palo Alto, CA	13	16
Shane Dormady Hematology-Oncology · Mountain View, CA	11	39

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