Medicare Enrolled
Dr. Mary Mulcahy, MD
Medical Oncology · Chicago, IL
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Consulting-driven
Very High
DATA COVERAGE
Data in 4 of 4 federal sources
Measures public federal data availability — not provider quality
Informational, not a quality rating.
This page presents federal public records about Dr. Mulcahy from CMS (NPPES, Open Payments, Medicare Provider Utilization, PECOS). It is not medical advice, an endorsement, or a judgment of clinical quality. Always consult the provider directly and a licensed clinician for medical decisions. Read methodology →
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What this data tells you about Dr. Mulcahy
Dr. Mary Mulcahy is a medical oncology specialist in Chicago, IL, with 20 years of NPI registration. Based on federal Medicare data, Dr. Mulcahy performed 151,323 Medicare services across 2,643 unique beneficiaries.
Between the years covered by Open Payments, Dr. Mulcahy received a total of $7,523 from 6 pharmaceutical and/or device companies across 8 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in medical oncology. The majority of payments are for consulting, which typically reflects recognized clinical expertise sought by manufacturers. Patients may wish to discuss these relationships with their provider.
The Data Coverage level for Dr. Mulcahy 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.
✓ 20 years in practice
▲ Top 4% volume in IL
$7,523 industry payments
Medicare Practice Summary
Medicare Utilization ↗151,323
Medicare services
Top 4% in IL for medical oncology
2,643
Unique beneficiaries
$21
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~7,566 Medicare services per year of practice
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 |
|---|---|---|---|
| Daratumumab injection (Darzalex) An injection containing daratumumab and hyaluronidase-fihj administered under the skin. |
34,020 | $38 | $170 |
| Anti-nausea injection (fosaprepitant) An injection of fosaprepitant, a medication used to prevent nausea and vomiting. |
16,350 | $0 | $7 |
| Nivolumab injection (Opdivo) | 11,840 | $24 | $97 |
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
11,250 | $1 | $5 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
10,400 | $2 | $14 |
| Oxaliplatin chemotherapy injection This procedure involves the administration of oxaliplatin, a chemotherapy medication, via injection. The dosage specified is 0.5 mg. |
10,362 | $0 | $38 |
| Immune globulin infusion (Gammagard) An injection of immune globulin (Gammagard Liquid) to provide antibodies. The dose specified is 500 mg. |
8,200 | $35 | $134 |
| Pembrolizumab injection (Keytruda) | 7,200 | $43 | $171 |
| Denosumab injection (Prolia/Xgeva) | 6,960 | $18 | $58 |
| Bortezomib injection, 0.1 mg Administration of a 0.1 mg dose of bortezomib medication via injection. |
4,555 | $4 | $174 |
| Bevacizumab biosimilar injection, 10 mg An injection of bevacizumab-awwb, a biosimilar medication, administered in a 10 mg dose. |
3,540 | $23 | $194 |
| Carfilzomib injection, 1 mg This code represents the administration of a 1 mg dose of carfilzomib via injection. |
3,493 | $36 | $118 |
| Injection, atropine sulfate, 0.01 mg | 3,320 | $0 | $1 |
| Rituximab-pvvr biosimilar injection, 10 mg An injection of rituximab-pvvr, a biosimilar medication, administered in a 10 mg dose. |
3,196 | $20 | $244 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
2,516 | $0 | $1 |
| Anti-nausea injection (Aloxi/palonosetron) | 2,190 | $1 | $76 |
| Injection, atezolizumab, 10 mg | 2,016 | $64 | $288 |
| Fluorouracil injection, 500 mg Administration of a 500 mg dose of fluorouracil medication via injection. |
1,224 | $2 | $8 |
| Injection, octreotide, depot form for intramuscular injection, 1 mg | 840 | $162 | $504 |
| Injection, leucovorin calcium, per 50 mg | 732 | $3 | $15 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
729 | $4 | $10 |
| Injection, irinotecan, 20 mg | 676 | $2 | $45 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
622 | $13 | $143 |
| Pegfilgrastim injection, 0.5 mg An injection of pegfilgrastim, a medication that stimulates the production of white blood cells. This specific code applies to the brand-name drug and excludes biosimilar versions. |
600 | $76 | $821 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
491 | $108 | $940 |
| Office visit, established patient, complex (40-54 min) An office or outpatient visit for an existing patient lasting between 40 and 54 minutes. This level of service is determined by the total time spent on the date of the encounter. |
355 | $144 | $434 |
| Non-hormonal chemotherapy injection This procedure involves administering non-hormonal anti-neoplastic chemotherapy medication via injection into the skin or muscle tissue. |
349 | $60 | $326 |
| Injection, gemcitabine hydrochloride, not otherwise specified, 200 mg | 296 | $3 | $105 |
| Additional hour of intravenous infusion This code represents each additional hour of intravenous infusion beyond the initial hour for therapy, prevention, or diagnosis. |
273 | $17 | $129 |
| 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. |
254 | $99 | $323 |
| 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. |
242 | $24 | $203 |
| Injection, granisetron hydrochloride, 100 mcg | 240 | $0 | $5 |
| Cyclophosphamide, 100 mg | 196 | $14 | $111 |
| 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. |
191 | $53 | $410 |
| 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. |
190 | $12 | $88 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
187 | $23 | $215 |
| Automated urinalysis An automated laboratory test performed on a urine sample to analyze its chemical and physical properties. The procedure uses machinery to detect various substances and cells within the urine. |
160 | $2 | $16 |
| IV chemotherapy initiation with community continuation Initiation of an intravenous chemotherapy infusion in a clinic using clinic supplies, with continuation of the infusion in a community setting such as home or assisted living. |
148 | $209 | $1,618 |
| Intravenous infusion of new drug or substance, 1 hour or less This procedure involves administering a new medication or substance directly into a vein through an existing access site. The infusion is completed within one hour or less. |
141 | $54 | $464 |
| Carboplatin chemotherapy injection, 50 mg Administration of a 50 mg dose of carboplatin, a chemotherapy medication, via injection. |
139 | $2 | $94 |
| Magnesium sulfate injection, per 500 mg An injection of magnesium sulfate administered in 500 mg increments. |
100 | $1 | $3 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
70 | $1 | $7 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
67 | $1 | $4 |
| Intravenous push injection of new drug or substance A healthcare provider injects a new medication or substance directly into a vein using a push technique. |
63 | $46 | $393 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
51 | $8 | $20 |
| New patient office visit, complex (60-74 min) | 42 | $180 | $625 |
| On-body injector for subcutaneous injection A device is applied to the skin to automatically deliver a medication injection under the skin. |
33 | $15 | $109 |
| Telephone medical discussion, 21-30 minutes A telephone conversation with a physician lasting between 21 and 30 minutes. This code covers the time spent discussing medical matters over the phone. |
33 | $102 | $250 |
| Intravenous chemotherapy injection Chemotherapy medication is administered directly into a vein using a push technique. This method involves injecting the drug through a needle or catheter already placed in the vein. |
32 | $84 | $677 |
| Intravenous drug injection A procedure involving the administration of a medication or substance directly into a vein. |
27 | $30 | $321 |
| Normal saline infusion, 1000 cc Administration of 1000 cc of normal saline solution into a vein. This procedure involves the intravenous delivery of a sterile saltwater solution. |
25 | $2 | $20 |
| Vitamin B-12 injection An injection of vitamin B-12 (cyanocobalamin) with a dose of up to 1000 mcg. |
23 | $1 | $12 |
| Urinalysis, manual A manual laboratory examination of a urine sample to check for various substances and cells. |
22 | $3 | $18 |
| Intravenous hydration infusion, 31-60 minutes Administration of fluids into a vein to maintain hydration. This procedure involves an infusion lasting between 31 and 60 minutes. |
20 | $27 | $338 |
| Flu vaccine, high-dose High-dose seasonal influenza vaccine for adults aged 65 and older. Contains four times the antigen of standard-dose flu vaccines (60 mcg per strain), split-virus formulation, preservative-free, single-dose syringe. |
16 | $72 | $110 |
| Flu vaccine administration This procedure involves the administration of the influenza virus vaccine. It covers the process of delivering the vaccine to the patient. |
16 | $32 | $57 |
How to read this data: This reflects Medicare patients only (typically 65+). Payment amounts are what Medicare paid the provider, not your out-of-pocket cost. A higher procedure volume generally indicates more experience with that procedure.
13.8% high complexity
85.4% medium
0.8% routine
Industry Payment Transparency
Open Payments through 2024 ↗$7,523
Total received (2019-2024)
Avg $1,505/year across 5 years
Top 34% in IL for medical oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
6
Companies
8
Individual payments
All payments are legal and publicly reported · Not evidence of wrongdoing · How to interpret →
Payment profile
Industry payments classified by relationship type. Not all payments are equal — research and consulting reflect different relationships than speaking programs or meals.
Consulting
Expert advisory fees, typically reflecting recognized clinical expertise
$7,250 (96.4%)
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$273 (3.6%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$53
2023
$41
2022
$11
2021
$7,250
2019
$168
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
Astellas Pharma US Inc
$35
Tempus AI, Inc
$18
Top 3 companies account for 100.0% of 2024 payments
All-time payments by company (2019-2024) ›
Boston Scientific Corporation
$7,250
Biocompatibles, Inc.
$168
Foundation Medicine, Inc.
$41
Astellas Pharma US Inc
$35
Tempus AI, Inc
$18
Bio Products Laboratory USA, Inc.
$11
Top 3 companies account for 99.1% of all-time payments
Associated products mentioned in payments ›
Coagadex · GENERAL PAIN MANAGEMENT · THERASPHERE - BIO · Xospata
Should you be concerned? Payments from pharmaceutical and device companies are legal and common — 57% of U.S. physicians receive at least one. They often reflect legitimate consulting, research, or education. What matters is whether a recommended drug or device appears in your doctor's payment records. If so, consider asking your doctor about it. How to interpret this data →
The majority of payments (96%) are consulting fees, which typically reflect recognized clinical expertise sought by manufacturers.
Geographic Context
Medical oncologists within 10 mi
78
Per 100K population
1.5
County median income
$81,797
Nearest hospital
NORTHWESTERN MEMORIAL HOSPITAL
0.0 mi
0.0 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. Mulcahy is a mixed practice specialist, with above-average Medicare volume (top 4% in IL), with consulting-driven industry engagement, with 20 years of NPI registration.
This summary is auto-generated from federal data, describing data availability and patterns. Read our methodology →
Frequently Asked Questions
Is Dr. Mulcahy experienced with daratumumab injection (darzalex)?
Based on Medicare claims data, Dr. Mulcahy performed 34,020 daratumumab injection (darzalex) services. Research suggests that higher procedure volume is often associated with better outcomes, particularly for complex procedures. Note that Medicare data only captures patients aged 65 and older, so the total practice volume across all patients is likely higher.
Does Dr. Mulcahy receive payments from pharmaceutical companies?
Yes. Dr. Mulcahy received a total of $7,523 from 6 companies across 8 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common among physicians — 57% of all U.S. physicians receive at least one industry payment. Patients may wish to ask their doctor about these relationships, especially if a recommended drug or device appears in the payment records.
How do Dr. Mulcahy's costs compare to other medical oncologists in Chicago?
Dr. Mulcahy's average Medicare payment per service is $21. Note that these figures represent what Medicare pays, not your out-of-pocket cost, which depends on your specific insurance plan and deductible. Procedure-level data above shows both what was submitted and what Medicare paid for each service type.
What does Data Coverage mean?
Data Coverage (currently Very High for Dr. Mulcahy) measures how much public federal data is available about a provider. It is not a quality rating. A "Very High" or "High" level means the provider has data across multiple federal sources (NPPES, PECOS, Medicare Utilization, Open Payments), indicating a long track record of practice, Medicare participation, and industry disclosure. A "Low" or "Moderate" level may simply mean the provider is newer, does not see Medicare patients, or has not received any industry payments — none of which are inherently negative. Read our full methodology →
Is this data up to date?
Each data source has its own update cycle. Provider registry data (NPPES) is updated weekly. Medicare enrollment (PECOS) is updated monthly. Medicare practice data has a ~2 year lag — the most recent available is typically 2 years prior. Industry payment data (Open Payments) is published annually, usually in June, covering the prior calendar year. We display the data date prominently on each section so you always know how current it is. See our data freshness policy →
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About this page
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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