What is Louisa Ziglar's specialty?

Louisa Ziglar (NPI 1538336151) is a Medicare-billing provider whose primary specialty is Rheumatology in Frederick, MD.

Where does Louisa Ziglar practice?

Louisa Ziglar practices in Frederick, MD, based on the location reported in the CMS Medicare provider datasets for NPI 1538336151.

How much does Medicare pay Louisa Ziglar?

Louisa Ziglar (NPI 1538336151) received approximately $713K in total Medicare Part B payments, serving 741 beneficiaries, per the CMS Medicare Physician & Other Practitioners dataset.

PROVIDER PROFILE · NPI 1538336151

Louisa ZiglarMD

PRACTICEZIZI INCSee all providers at this practice →

RheumatologyFrederick, MDI

MEDICARE UTILIZATION · PART B · 2024

Total beneficiaries

4,934

Unique beneficiaries

—

Total services

20,448

Distinct HCPCS

Medicare payment

$375K

Peer benchmark

Total Medicare services vs. 133 Rheumatology providers in MD — above median (cohort median 27,542).

PRESCRIBING · PART D · 2024

Total Rx claims

1,669

Beneficiaries

—

Total drug cost

$940K

Distinct drugs

Brand share

26.2%

Top prescribed drugs

Methotrexate Sodium267 claims

Hydroxychloroquine Sulfate209 claims

Prednisone207 claims

Alendronate Sodium205 claims

Tramadol Hcl70 claims

QUALITY · MIPS · 2024

No data available for this provider in 2024.

INDUSTRY PAYMENTS · OPEN PAYMENTS · 2025

Total received

$118

Payment records

By payment type

Education$69

Food and Beverage$49

Top paying entities

Education$69

Food and Beverage$49

REFERRAL NETWORK

Where Louisa Ziglar'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). 2 inbound referrers · 0 outbound destinations.

Receives referrals from

Inbound — who sends patients here

Physician	Patients	Visits
Sunrise Medical Laboratories, Inc. Clinical Laboratory · Hicksville, NY	56	225
Laboratory Corporation Of America Holdings Clinical Laboratory · Raritan, NJ	18	38

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