Dr. Walter Marbach, MD
What this data tells you about Dr. Marbach
Dr. Walter Marbach is a rheumatology specialist in Crestwood, IL, with 19 years of NPI registration. Based on federal Medicare data, Dr. Marbach performed 233,695 Medicare services across 1,142 unique beneficiaries.
Between the years covered by Open Payments, Dr. Marbach received a total of $5,784 from 27 pharmaceutical and/or device companies across 190 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in rheumatology. Most payments are for meals and travel — low-value interactions common across virtually all practicing physicians. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Marbach is Very High — reflecting how much public federal data is available about this provider. Patients are encouraged to use this data as one of several factors when choosing a healthcare provider.
Medicare Practice Summary
Medicare Utilization ↗Top procedures by volume
Ranked by number of services performed for Medicare patients. Avg. submitted charge is what the provider billed; avg. Medicare payment is what CMS paid.
| Procedure | Volume | Avg. paid | Avg. submitted |
|---|---|---|---|
| Daptomycin antibiotic injection | 130,590 | $0 | $1 |
| Vedolizumab infusion (Entyvio) This procedure involves the administration of vedolizumab via injection. The dosage is measured in milligrams. |
23,100 | $17 | $49 |
| Certolizumab injection (Cimzia) An injection of certolizumab pegol administered under the direct supervision of a physician. |
17,200 | $4 | $24 |
| Injection, belatacept, 1 mg | 14,248 | $3 | $7 |
| Dalbavancin injection, 5 mg An injection of the antibiotic dalbavancin, administered in a 5 mg dose. |
11,300 | $12 | $31 |
| Inclisiran injection (Leqvio) for cholesterol | 7,668 | $9 | $21 |
| Tezepelumab injection, 1 mg An injection of tezepelumab-ekko, a medication administered in 1 mg doses. |
7,140 | $14 | $33 |
| Omalizumab injection (Xolair) for asthma/allergy | 5,835 | $30 | $77 |
| Infliximab infusion (Remicade) An injection of infliximab, excluding biosimilar versions, administered in a 10 mg dose. |
5,350 | $26 | $210 |
| Immune globulin infusion (Gammagard) An injection of immune globulin (Gammagard Liquid) to provide antibodies. The dose specified is 500 mg. |
5,022 | $36 | $145 |
| Denosumab injection (Prolia/Xgeva) | 1,440 | $19 | $48 |
| Injection, benralizumab, 1 mg | 1,170 | $132 | $330 |
| Intravenous infusion, 1 hour or less Administration of medication or fluid directly into a vein for therapeutic, preventive, or diagnostic purposes. The procedure lasts one hour or less. |
828 | $53 | $225 |
| Ceftriaxone antibiotic injection This code represents the administration of ceftriaxone sodium, an antibiotic medication. The charge is calculated for every 250 mg of the drug administered. |
793 | $0 | $16 |
| Ertapenem sodium injection, 500 mg An injection of ertapenem sodium, an antibiotic medication, administered at a dose of 500 mg. |
596 | $11 | $106 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
192 | $104 | $403 |
| Office visit, established patient (20-29 min) An office visit for an existing patient lasting between 20 and 29 minutes. The visit involves medical evaluation and management of the patient's condition. |
178 | $67 | $164 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
171 | $60 | $180 |
| Additional sequential IV infusion, 1 hour or less This code represents an additional intravenous infusion administered sequentially to a primary infusion. It covers the administration time of one hour or less. |
153 | $24 | $100 |
| Drug injection, under skin or into muscle A procedure involving the administration of a medication or substance via injection into the subcutaneous tissue or muscle. |
139 | $11 | $35 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
134 | $8 | $25 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
127 | $16 | $150 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
118 | $23 | $95 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
89 | $13 | $66 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
59 | $4 | $12 |
| Office visit, established patient (10-19 min) An office visit for an existing patient lasting 10 to 19 minutes. The visit involves medical evaluation and management of the patient's condition. |
35 | $40 | $100 |
| Office visit, established patient (30-39 min) A follow-up office visit for an existing patient lasting between 30 and 39 minutes. The visit involves medical evaluation and management of the patient's condition. |
20 | $102 | $245 |
Industry Payment Transparency
Open Payments through 2024 ↗Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
Payments by company (2024)
All-time payments by company (2018-2024) ›
Associated products mentioned in payments ›
Most payments (98%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
3.7 mi
Data Sources
| Provider Registry | ✓ NPPES | Weekly updates |
| Medicare Enrollment | ✓ PECOS | Monthly updates |
| Practice Data | ✓ Medicare Util. | Annual (CY lag) |
| Industry Payments | ✓ Open Payments | CY 2024 |
| Disciplinary History | — Not public | N/A |
This provider has data in 4 of 4 available federal datasets, with a Data Coverage level of Very High. This reflects how much public data is available about a provider. How we calculate this →
Summary
Dr. Marbach is a mixed practice specialist, with above-average Medicare volume (top 2% in IL), with low-engagement industry engagement, with 19 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
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All data on this page is sourced verbatim from public federal records published by the U.S. Centers for Medicare & Medicaid Services (CMS): NPPES ↗, Open Payments ↗, Medicare Provider Utilization ↗, and PECOS. Publication is mandated by the Physician Payments Sunshine Act (§6002 ACA, 42 U.S.C. §1320a-7h) and the Freedom of Information Act.
This page is not medical advice, an endorsement, a recommendation, or a quality rating. Data Coverage reflects data completeness — how much federal information exists for this provider — not clinical performance, patient outcomes, or quality of care. Always verify information directly with the provider and consult a licensed clinician before making medical decisions.
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