Ellen Breen Cassidy, MD
Family Medicine Physician · Millersville, MD
Ellen Breen Cassidy, MD is a family medicine physician with a practice address in Millersville, Maryland, and NPI 1013982248, issued on Feb 21, 2006. Check the license (Maryland D62595, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Ellen Breen Cassidy
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- D62595 MD
Self-reported in NPPES; status is on the state search - Practice location
- 8601 Veterans Hwy, Millersville, MD 21108
- Phone
- (410) 553-8092
- Enumerated
- Feb 21, 2006
- Record last updated
- Oct 15, 2014 (not updated in 12 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20150514000593); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 1,912 in Maryland → Look up another NPI →
Also registered at 8601 Veterans Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Ellen Breen Cassidy in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D62595Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
65% fewer Medicare Part D claims than the average family medicine physician in 2024
1,227 Medicare Part D claims for 129 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. 13 claims were for opioids.
Most prescribed
- Eliquis80 claims
- Atorvastatin Calcium60 claims
- Levothyroxine Sodium53 claims
- Gabapentin36 claims
- Metoprolol Succinate36 claims
- Amlodipine Besylate33 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.
Bills Medicare through 2 group practices
- CH Specialty Services MD LLCPikesville, MD
- Curana Health OF Maryland LLCPikesville, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ellen Breen Cassidy among 1,912 family medicine physician records in Maryland
Ellen Breen Cassidy, MD is one of 1,912 family medicine physician records with a practice address in Maryland. 73% 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, 54% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1995 · median 2004 among the 1,141 with a school on file
- Record last updated2014 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
6 family medicine physician records list a practice address in Millersville
They are 6 of the 445 NPPES records with a practice address in Millersville, and 1,912 family medicine physician records in Maryland.
All 1,912 in Maryland → Every provider in Millersville → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Anuj Bhatnagar, M.D.Millersville, MD 211081316253180
- Francisca Bruney, MDMillersville, MD 211081629282264
- Janna Davis, M.D.Millersville, MD 211081689930489
- Pavitri DwivediMillersville, MD 211081679195408
- Rebecca Middleton, M.D.Millersville, MD 211081558527291
- Kathleen Tully, M.D.Monkton, MD 211111750395984
- Patricia GillenOdenton, MD 211131427096221
- Chamara Hasan, MDOdenton, MD 211131083623532
Common questions
What is Ellen Breen Cassidy, MD's NPI number?
Ellen Breen Cassidy, MD's National Provider Identifier (NPI) is 1013982248, issued on Feb 21, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ellen Breen Cassidy, MD located?
The NPPES record lists a practice address at 8601 Veterans Hwy, Millersville, MD, 21108. Phone: (410) 553-8092. Providers update this record themselves, so call before visiting.
How can I verify Ellen Breen Cassidy, MD's license?
NPPES lists Maryland license number D62595, 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.
How much does Ellen Breen Cassidy, MD prescribe under Medicare Part D?
In 2024, Ellen Breen Cassidy, MD had 1,227 Medicare Part D claims for 129 beneficiaries; the average among family medicine physician prescribers was 3,544. Part D covers Medicare prescriptions only.
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.