What is David Mark's specialty?

David Mark (NPI 1912900218) is a Medicare-billing provider whose primary specialty is Ophthalmology in Sunnyvale, CA.

Where does David Mark practice?

David Mark practices in Sunnyvale, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1912900218.

How much does Medicare pay David Mark?

David Mark (NPI 1912900218) received approximately $70K in total Medicare Part B payments, serving 400 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

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

Healthparse Signals

Monitor this provider for changes — dated NPI change events