What is Ariel Marks's specialty?

Ariel Marks (NPI 1568552438) is a Medicare-billing provider whose primary specialty is Emergency Medicine in Redwood City, CA.

Where does Ariel Marks practice?

Ariel Marks practices in Redwood City, CA, based on the location reported in the CMS Medicare provider datasets for NPI 1568552438.

How much does Medicare pay Ariel Marks?

Ariel Marks (NPI 1568552438) received approximately $130K in total Medicare Part B payments, serving 1,023 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1568552438

Ariel MarksM.D

PRACTICEDIGNITY HEALTHSee all providers at this practice →

Emergency MedicineRedwood City, CAI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

1,651

Unique beneficiaries

—

Total services

1,782

Distinct HCPCS

Medicare payment

$126K

Peer benchmark

Total Medicare services vs. 5,287 Emergency Medicine providers in CA — top quintile (cohort median 355).

PRESCRIBING · PART D · 2024

Total Rx claims

365

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

41.4%

Top prescribed drugs

Prednisone73 claims

Hydrocodone/Acetaminophen68 claims

Ibuprofen66 claims

Ondansetron42 claims

Ciprofloxacin Hcl39 claims

QUALITY · MIPS · 2024

Final MIPS score

96.7

Quality

90.0

Cost

78.4

Improvement activities

40.0

Promoting interop.

0.0

Payment adjustment

0.91%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

No data available for this provider in 2025.

REFERRAL NETWORK

Where Ariel Marks'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). 28 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Michael Putnam Physician Assistant · San Jose, CA	132	210
Carl Tjerandsen Physician Assistant · Redding, CA	104	146
BURKE, VINCENT	87	164
WHEAT, RICHARD	72	151
Daniel Libke Emergency Medicine · Piedmont, CA	55	110
George Oldham Emergency Medicine · Redwood City, CA	55	152
Jon Keller Pathology · Palo Alto, CA	46	150
David Pusateri Hospitalist · Redwood City, CA	37	108
Scott Sherr Internal Medicine · Wheat Ridge, CO	32	111
Phillip Ng Nephrology · Redwood City, CA	31	157
Marie President Internal Medicine · Belmont, CA	23	68
Nellis Smith Cardiology · E Palo Alto, CA	23	54

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