Medicare Enrolled
Dr. Molly Stumacher, MD
Hematology & Oncology · West Chester, PA
Practice pattern: Mixed Practice
— Diverse clinical practice across multiple procedure types
Low-engagement
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. Stumacher 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. Stumacher
Dr. Molly Stumacher is a hematology & oncology specialist in West Chester, PA, with 19 years of NPI registration. Based on federal Medicare data, Dr. Stumacher performed 154,965 Medicare services across 1,493 unique beneficiaries.
Between the years covered by Open Payments, Dr. Stumacher received a total of $13,879 from 85 pharmaceutical and/or device companies across 736 individual payments. These payments are legal, publicly disclosed under the federal Sunshine Act, and common in hematology & oncology. 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. Stumacher 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.
✓ 19 years in practice
▲ Top 1% volume in PA
$13,879 industry payments
Medicare Practice Summary
Medicare Utilization ↗154,965
Medicare services
Top 1% in PA for hematology & oncology
1,493
Unique beneficiaries
$5
Avg. Medicare payment
Medicare patients only (65+ / disabled) · How to read this →
~8,156 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 |
|---|---|---|---|
| Iron infusion (Injectafer) An intravenous injection of ferric carboxymaltose, an iron replacement medication. |
54,750 | $1 | $2 |
| Darbepoetin injection (Aranesp) for anemia An injection of darbepoetin alfa used for non-end-stage renal disease purposes. |
50,700 | $2 | $10 |
| Anti-nausea injection (fosaprepitant) An injection of fosaprepitant, a medication used to prevent nausea and vomiting. |
24,600 | $0 | $5 |
| Denosumab injection (Prolia/Xgeva) | 11,100 | $18 | $40 |
| Dexamethasone injection (steroid) An injection of dexamethasone sodium phosphate, a corticosteroid medication, administered in a dose of 1 milligram. |
4,771 | $0 | $3 |
| Anti-nausea injection (Aloxi/palonosetron) | 2,180 | $1 | $50 |
| Intravenous injection of additional new drug or substance Administration of an additional new medication or substance directly into a vein. |
1,248 | $13 | $55 |
| Pegfilgrastim-apgf injection An injection of pegfilgrastim-apgf, a biosimilar medication. The dose specified is 0.5 mg. |
1,056 | $94 | $370 |
| 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. |
813 | $99 | $217 |
| 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. |
517 | $11 | $50 |
| Blood draw (venipuncture) Insertion of a needle into a vein to collect a blood sample. |
505 | $5 | $5 |
| Intravenous chemotherapy infusion, 1 hour or less Administration of chemotherapy medication directly into a vein. The procedure takes one hour or less to complete. |
410 | $109 | $322 |
| Unclassified drug A medication that does not fit into standard HCPCS or CPT classification categories. |
376 | $1 | $16 |
| Diphenhydramine injection, up to 50 mg An injection of diphenhydramine hydrochloride, an antihistamine medication, administered in a dose of up to 50 milligrams. |
253 | $1 | $13 |
| 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. |
240 | $144 | $269 |
| Enhanced Oncology Model monthly payment This code represents the monthly enhanced oncology services payment under the Enhancing Oncology Model. It covers the administrative payment for enhanced services provided to eligible patients. |
236 | $71 | $70 |
| 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. |
232 | $24 | $75 |
| 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. |
198 | $54 | $160 |
| 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. |
143 | $50 | $170 |
| Additional hour of intravenous chemotherapy This code represents the administration of chemotherapy medication into a vein for each additional hour beyond the initial period. |
110 | $24 | $72 |
| 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. |
101 | $2 | $30 |
| New patient office visit, complex (60-74 min) | 87 | $180 | $309 |
| 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. |
79 | $69 | $142 |
| 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. |
64 | $27 | $125 |
| Irrigation of implanted venous access device This procedure involves flushing an implanted venous access device to clear blockages or maintain patency. It ensures the device remains functional for delivering medications or fluids. |
64 | $21 | $75 |
| Methylprednisolone injection, up to 125 mg An injection of methylprednisolone sodium succinate, a corticosteroid medication, with a dosage of up to 125 mg. |
60 | $4 | $25 |
| Additional hour of intravenous hydration This code represents each additional hour of intravenous fluid administration beyond the initial hour. It is used to bill for extended hydration therapy. |
39 | $11 | $35 |
| Initial hospital admission, high complexity Initial hospital inpatient or observation care for a new patient involving high-level medical decision making, with at least 75 minutes total time on the date of the encounter. |
33 | $142 | $312 |
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.
36.1% high complexity
62.3% medium
1.6% routine
Industry Payment Transparency
Open Payments through 2024 ↗$13,879
Total received (2018-2024)
Avg $1,983/year across 7 years
Top 19% in PA for hematology & oncology
A higher payment rank reflects disclosed industry relationships (consulting, research, speaking) common among subspecialists — not wrongdoing.
85
Companies
736
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.
Meals & Travel
Food, beverages, travel, and lodging — typically low-value
$13,702 (98.7%)
Speaking / Promotional
Speaker programs, honoraria, and industry-sponsored educational events
$177 (1.3%)
Payment trend by year
Annual totals from pharmaceutical and medical device companies.
2024
$2,339
2023
$3,421
2022
$1,739
2021
$1,660
2020
$1,678
2019
$2,318
2018
$724
Payments by company (2024)
Consulting
Speaking
Meals & Travel
Research
PFIZER INC.
$230
Novartis Pharmaceuticals Corporation
$229
ABBVIE INC.
$185
AstraZeneca Pharmaceuticals LP
$147
Merck Sharp & Dohme LLC
$141
Daiichi Sankyo Inc.
$138
Astellas Pharma US Inc
$121
Celgene Corporation
$104
Eisai Inc.
$86
Incyte Corporation
$84
SHIELD THERAPEUTICS INC
$83
Ipsen Biopharmaceuticals, Inc
$74
E.R. Squibb & Sons, L.L.C.
$74
SOBI, INC
$65
Gilead Sciences, Inc.
$57
Amneal Pharmaceuticals LLC
$56
Exelixis Inc.
$54
Janssen Pharmaceuticals, Inc
$47
ARRAY BIOPHARMA INC
$46
Lilly USA, LLC
$43
Alnylam Pharmaceuticals Inc.
$32
JAZZ PHARMACEUTICALS INC.
$26
Mirati Therapeutics, Inc.
$24
PharmaEssentia USA Corporation
$24
Apellis Pharmaceuticals, Inc.
$21
Genmab U.S., Inc.
$21
Bayer Healthcare Pharmaceuticals Inc.
$20
Pharmacosmos Therapeutics Inc.
$19
Stemline Therapeutics Inc.
$18
EMD Serono, Inc.
$18
TerSera Therapeutics LLC
$18
RECORDATI_RARE_DISEASES_INC.
$18
Alexion Pharmaceuticals, Inc.
$17
Top 3 companies account for 27.5% of 2024 payments
All-time payments by company (2018-2024) ›
AstraZeneca Pharmaceuticals LP
$1,287
E.R. Squibb & Sons, L.L.C.
$1,045
Celgene Corporation
$686
Novartis Pharmaceuticals Corporation
$659
Amgen Inc.
$626
Daiichi Sankyo Inc.
$575
PFIZER INC.
$512
Lilly USA, LLC
$504
Janssen Biotech, Inc.
$483
Seagen Inc.
$404
GENZYME CORPORATION
$365
Astellas Pharma US Inc
$364
Pharmacyclics LLC, An AbbVie Company
$314
Merck Sharp & Dohme LLC
$309
Ipsen Biopharmaceuticals, Inc
$301
Eisai Inc.
$297
Incyte Corporation
$291
Bayer HealthCare Pharmaceuticals Inc.
$287
Takeda Pharmaceuticals U.S.A., Inc.
$236
ABBVIE INC.
$232
Merck Sharp & Dohme Corporation
$224
Exelixis Inc.
$189
Seattle Genetics, Inc.
$185
EMD Serono, Inc.
$170
Puma Biotechnology, Inc.
$160
Servier Pharmaceuticals LLC
$159
Pharmacyclics LLC, an AbbVie Company
$152
ARRAY BIOPHARMA INC
$142
EISAI INC.
$122
Pharmacosmos Therapeutics Inc.
$107
Gilead Sciences, Inc.
$106
Janssen Pharmaceuticals, Inc
$105
Mirati Therapeutics, Inc.
$105
Alnylam Pharmaceuticals Inc.
$102
Genentech USA, Inc.
$99
BeiGene USA, Inc.
$94
MorphoSys, US Inc.
$89
Taiho Oncology, Inc.
$85
Stemline Therapeutics Inc.
$83
SHIELD THERAPEUTICS INC
$83
Regeneron Healthcare Solutions, Inc.
$68
Foundation Medicine, Inc.
$66
SOBI, INC
$65
Kyowa Kirin, Inc.
$63
Blueprint Medicines Corporation
$59
Alexion Pharmaceuticals, Inc.
$58
AbbVie Inc.
$56
Bayer Healthcare Pharmaceuticals Inc.
$56
Amneal Pharmaceuticals LLC
$56
TerSera Therapeutics LLC
$52
Coherus Biosciences Inc.
$49
JAZZ PHARMACEUTICALS INC.
$43
Apellis Pharmaceuticals, Inc.
$41
PharmaEssentia USA Corporation
$41
Agios Pharmaceuticals, Inc.
$40
Dova Pharmaceuticals
$40
Sobi, Inc
$36
G1 Therapeutics, Inc.
$35
GlaxoSmithKline, LLC.
$34
Boehringer Ingelheim Pharmaceuticals, Inc.
$34
Lexicon Pharmaceuticals, Inc.
$34
Karyopharm Therapeutics Inc.
$34
AVEO Pharmaceuticals, Inc.
$33
RECORDATI_RARE_DISEASES_INC.
$33
Teva Pharmaceuticals USA, Inc.
$31
Immunomedics, Inc.
$30
Aveo Pharmaceuticals, Inc.
$30
Clovis Oncology, Inc.
$24
SUN PHARMACEUTICAL INDUSTRIES INC.
$22
Kite Pharma, Inc.
$22
Sandoz Inc.
$22
Genmab U.S., Inc.
$21
Acceleron Pharma, Inc.
$20
PUMA BIOTECHNOLOGY, INC.
$20
Verastem, Inc.
$20
Jazz Pharmaceuticals Inc.
$18
Sirtex Medical Inc
$18
NOVARTIS PHARMACEUTICALS CORPORATION
$16
TAIHO ONCOLOGY, INC.
$16
Myovant Sciences Inc.
$15
EUSA Pharma (US) LLC
$15
SERVIER PHARMACEUTICALS LLC
$14
Heron Therapeutics, Inc.
$14
AbbVie, Inc.
$14
Rigel Pharmaceuticals, Inc.
$13
Top 3 companies account for 21.7% of all-time payments
Associated products mentioned in payments ›
ACCRUFER · ADCETRIS · AFINITOR · ALIMTA · ALUNBRIG · AVASTIN · AYVAKIT · Abraxane · Aranesp · Avastin · BALVERSA · BAVENCIO · BENDEKA · BESREMI · BLENREP · BOSULIF · BRAFTOVI · BRUKINSA · Balversa · Bavencio · Blincyto · CABLIVI · CABOMETYX · CALQUENCE · CARBAGLU · COSELA · CYRAMZA · Cabometyx · Copiktra · DIFICID · DOPTELET · Doptelet · ELIQUIS · ELREXFIO · EMPLICITI · ENHERTU · EPKINLY · ERBITUX · ERLEADA · EVENITY · EXKIVITY · Empaveli · Enhertu · Erleada · FOTIVDA · FOUNDATIONONE · Fabhalta · GILOTRIF · GIVLAARI · Halaven · IBRANCE · IMBRUVICA · IMFINZI · INJECTAFER · INLYTA · INQOVI · INREBIC · Imbruvica · JAKAFI · JEVTANA · KANJINTI · KEYTRUDA · KISQALI · KRAZATI · Kerendia · Kyprolis · LENVIMA · LIBTAYO · LIBTAYO CEMIPLIMAB-RWLC INJECTION · LONSURF · LORBRENA · LUMAKRAS · LUPRON DEPOT · LYNPARZA · Lenvima · Lonsurf · MEKINIST · MONJUVI · MONOFERRIC · MVASI · Monoferric · NERLYNX · NINLARO · NOXAFIL · Nerlynx · Neulasta · Nplate · Nubeqa · ONUREG · OPDIVO · OPDUALAG · ORGOVYX · Onivyde · Orserdu · PADCEV · PANHEMATIN · PEMAZYRE · PIQRAY · PLUVICTO · POTELIGEO · PROMACTA · PYRUKYND · Perjeta · Pomalyst · Prolia · REBLOZYL · RETEVMO · Reblozyl · Revlimid · Rubraca · SANCUSO · SANDOSTATIN · SARCLISA · SCEMBLIX · SIR-Spheres Microspheres · SOMATULINE DEPOT · SPRYCEL · SUSTOL · Somatuline Depot · Stivarga · Sylvant · TAGRISSO · TASIGNA · TECENTRIQ · TEPMETKO · TIBSOVO · TUKYSA · Tavalisse · Tazverik · Tibsovo · Tivdak · Trodelvy · ULTOMIRIS · Udenyca · Ultomiris · VENCLEXTA · VERZENIO · VONJO · VYXEOS · Venclexta · Vitrakvi · Vyloy · XALKORI · XARELTO · XERMELO · XOSPATA · XPOVIO · XTANDI · Xermelo · Xospata · Xtandi · YONSA · ZEPZELCA · ZIEXTENZO · ZINPLAVA
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 →
Most payments (99%) are for meals and travel — low-value interactions that are common across virtually all practicing physicians.
Geographic Context
Hematology & oncology specialists within 10 mi
200
Per 100K population
37.0
County median income
$123,041
Nearest hospital
CHESTER COUNTY 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. Stumacher is a mixed practice specialist, with above-average Medicare volume (top 1% in PA), with low-engagement industry engagement in the top 19% of PA peers, 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
Is Dr. Stumacher experienced with iron infusion (injectafer)?
Based on Medicare claims data, Dr. Stumacher performed 54,750 iron infusion (injectafer) 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. Stumacher receive payments from pharmaceutical companies?
Yes. Dr. Stumacher received a total of $13,879 from 85 companies across 736 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. Stumacher's costs compare to other hematology & oncology specialists in West Chester?
Dr. Stumacher's average Medicare payment per service is $5. 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. Stumacher) 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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