Molly S. Stumacher, MD
Hematology & Oncology Physician · West Chester, PA
Molly S. Stumacher, MD is a hematology & oncology physician with a practice address in West Chester, Pennsylvania, and NPI 1396842126, issued on Sep 20, 2006. Check the license (Pennsylvania MD423066, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Molly S. Stumacher
- Credential
- MD
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- MD423066 PA
Self-reported in NPPES; status is on the state search - Practice location
- 440 E Marshall St, West Chester, PA 19380
- Phone
- (610) 738-2500
- Enumerated
- Sep 20, 2006
- Record last updated
- Aug 28, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (610) 738-2540
- Medicare enrollment
- Enrolled (PECOS I20060424000192); accepts Medicare assignment
- Medical or professional school
- Harvard Medical School, 2000
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 784 in Pennsylvania → Look up another NPI →
Also registered at 440 E Marshall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Amy Akins, M.D.Pediatrics Physician1083816839
- Jose Alarcon, MDInternal Medicine Physician1669402780
- Kelly AshmeadPediatric Nurse Practitioner1669914461
- Julia Bahn, CRNPPediatric Nurse Practitioner1073875886
- Joanne Boyk, CRNPAdult Health Nurse Practitioner1134335391
- Meher Burki, M.D.Hematology & Oncology Physician1184877813
Verify Molly S. Stumacher in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license MD423066Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% more Medicare Part D claims than the average hematology & oncology physician in 2024
1,512 Medicare Part D claims for 320 beneficiaries, against an average of 877 among the 10,784 providers of this specialty who prescribed in Part D. Brand-name drugs were 22% of claims. 12 claims were for opioids.
Most prescribed
- Anastrozole383 claims
- Letrozole140 claims
- Eliquis107 claims
- Hydroxyurea77 claims
- Ondansetron Hcl58 claims
- Xarelto53 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The practice group's MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $2,339.23
114 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 8,560 providers of this specialty with any payment received $7,481.41 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Bryn Mawr Medical Specialists AssociationBryn Mawr, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Molly S. Stumacher among 784 hematology & oncology physician records in Pennsylvania
Molly S. Stumacher, MD is one of 784 hematology & oncology physician records with a practice address in Pennsylvania. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 13% of them.
- NPI issued2006 · 13% of these records are older, 55% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated2000 · median 2004 among the 553 with a school on file
- Record last updated2015 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Pennsylvania
There are 784 hematology & oncology physician records in Pennsylvania.
All 784 in Pennsylvania → Every provider in West Chester → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Daniel AltmanWest Chester, PA 193801790104149
- Dennis Berman, MDWest Chester, PA 193801184721870
- Meher Burki, M.D.West Chester, PA 193801184877813
- Michael Costello, MDWest Chester, PA 193801366645111
- David Grossman, MDWest Chester, PA 193801972601706
- Maureen Hewitt, MDWest Chester, PA 193801447312368
- Sarah HoutmannWest Chester, PA 193801518315688
- Cheryl Johnson, MDWest Chester, PA 193801063519890
Common questions
What is Molly S. Stumacher, MD's NPI number?
Molly S. Stumacher, MD's National Provider Identifier (NPI) is 1396842126, issued on Sep 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Molly S. Stumacher, MD located?
The NPPES record lists a practice address at 440 E Marshall St, West Chester, PA, 19380. Phone: (610) 738-2500. Providers update this record themselves, so call before visiting.
How can I verify Molly S. Stumacher, MD's license?
NPPES lists Pennsylvania license number MD423066, as entered by the provider. Search the Pennsylvania Department of State (PALS) at https://www.pals.pa.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Molly S. Stumacher, MD prescribe under Medicare Part D?
In 2024, Molly S. Stumacher, MD had 1,512 Medicare Part D claims for 320 beneficiaries; the average among hematology & oncology physician prescribers was 877. Part D covers Medicare prescriptions only.
What is Molly S. Stumacher, MD's MIPS final score?
The 2023 MIPS final score is 95.8 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.