Margaret Mary Showel, M.D.
Medical Oncology Physician · Baltimore, MD
Margaret Mary Showel, M.D. is a medical oncology physician with a practice address in Baltimore, Maryland, and NPI 1871605352, issued on Aug 31, 2006. Check the license (Maryland D64375, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Margaret Mary Showel
- Credential
- M.D.
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License number
- D64375 MD
Self-reported in NPPES; status is on the state search - Practice location
- 600 N Wolf St, Baltimore, MD 21264
- Phone
- (410) 955-8964
- Enumerated
- Aug 31, 2006
- Record last updated
- Aug 16, 2022
- Medicaid ID
- 417497600 MD
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 224 in Maryland → Look up another NPI →
Verify Margaret Mary Showel in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D64375Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
The practice group's MIPS final score for 2023 (Medicare payment program): 74.4 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: $20.36
1 payment: food and beverage; the largest payer was Sanofi-Aventis U.S. LLC. The 3,343 providers of this specialty with any payment received $11,773.47 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.
Margaret Mary Showel among 224 medical oncology physician records in Maryland
Margaret Mary Showel, M.D. is one of 224 medical oncology physician records with a practice address in Maryland. 67% 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 4% of them.
- NPI issued2006 · 4% of these records are older, 53% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 57% of these records are
- Record last updated2022 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Maryland
There are 224 medical oncology physician records in Maryland.
All 224 in Maryland → Every provider in Baltimore → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Yasser Ged, MBSS, MDBaltimore, MD 212641952811044
- Yaldah Mohammad Nader, MDBaltimore, MD 212641447887864
- Ashraf Badros, M.D.Baltimore, MD 212631821038241
- Richard Ambinder, M.D.Baltimore, MD 212871528022407
- Mary Armanios, M.D.Baltimore, MD 212871588628390
- Atul Bedi, M.D.Baltimore, MD 212871760447114
- Julie Brahmer, M.D.Baltimore, MD 212871982661989
- Patrick Brown, M.D.Baltimore, MD 212871154389633
Common questions
What is Margaret Mary Showel, M.D.'s NPI number?
Margaret Mary Showel, M.D.'s National Provider Identifier (NPI) is 1871605352, issued on Aug 31, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Mary Showel, M.D. located?
The NPPES record lists a practice address at 600 N Wolf St, Baltimore, MD, 21264. Phone: (410) 955-8964. Providers update this record themselves, so call before visiting.
How can I verify Margaret Mary Showel, M.D.'s license?
NPPES lists Maryland license number D64375, as entered by the provider. Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
What is Margaret Mary Showel, M.D.'s MIPS final score?
The 2023 MIPS final score is 74.4 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.