What is Marianne Cowley's specialty?

Marianne Cowley (NPI 1811964448) is a Medicare-billing provider whose primary specialty is Ophthalmology in Baltimore, MD.

Where does Marianne Cowley practice?

Marianne Cowley practices in Baltimore, MD, based on the location reported in the CMS Medicare provider datasets for NPI 1811964448.

How much does Medicare pay Marianne Cowley?

Marianne Cowley (NPI 1811964448) received approximately $253K in total Medicare Part B payments, serving 379 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1811964448

Marianne CowleyMD

PRACTICEJOHNS HOPKINS HOSPITALSee all providers at this practice →

OphthalmologyBaltimore, MDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

827

Unique beneficiaries

—

Total services

1,421

Distinct HCPCS

Medicare payment

$203K

Peer benchmark

Total Medicare services vs. 447 Ophthalmology providers in MD — below median (cohort median 2,862).

PRESCRIBING · PART D · 2024

Total Rx claims

Beneficiaries

—

Total drug cost

$2K

Distinct drugs

Brand share

0.0%

Top prescribed drugs

Prednisolone Acetate42 claims

Brimonidine Tartrate19 claims

Ketorolac Tromethamine13 claims

QUALITY · MIPS · 2024

Final MIPS score

83.3

Quality

73.9

Cost

70.5

Improvement activities

40.0

Promoting interop.

100.0

Payment adjustment

0.35%

Group

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2024

No data available for this provider in 2024.

REFERRAL NETWORK

Where Marianne Cowley'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). 7 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
JEWISH HOSPITAL & ST. MARY'S HEALTHCARE, INC.	53	114
BAPTIST HEALTHCARE SYSTEM INC.	35	77
Bryan Blair Ophthalmology · Crestwood, KY	34	56
Patricia Hansen Internal Medicine · Louisville, KY	15	28
John Distler Ophthalmology · Crestwood, KY	15	20
BAPTIST HEALTHCARE SYSTEM, INC.	13	29
Albert Smolyar Ophthalmology · Fort Myers, FL	12	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