John Philip Mastandrea, M.D.
Radiation Oncology Physician · Easton, MD
John Philip Mastandrea, M.D. is a radiation oncology physician with a practice address in Easton, Maryland, and NPI 1518999697, issued on Jul 7, 2006. Check the license (Maryland D0036644, as entered in NPPES) on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- John Philip Mastandrea
- Credential
- M.D.
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License numbers
- D0036644 MD
83159 SC
Self-reported in NPPES; status is on the state search - Practice location
- 509 Idlewild Ave, Easton, MD 21601
- Phone
- (410) 820-6411
- Enumerated
- Jul 7, 2006
- Record last updated
- Jun 9, 2025
- Fax
- (410) 820-4229
- Medicaid ID
- 088861300 MD
- Medicare enrollment
- Enrolled (PECOS I20250423002292); accepts Medicare assignment
- Medical or professional school
- Indiana University School Of Medicine, 1983
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 124 in Maryland → Look up another NPI →
Also registered at 509 Idlewild Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Robert Malacoff, MDCardiovascular Disease Physician1508852039
Verify John Philip Mastandrea in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of Physicians
Search for license D0036644Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
10% more Medicare Part D claims than the average radiation oncology physician in 2024
148 Medicare Part D claims for 42 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D. 31 claims were for opioids.
Most prescribed
- Lidocaine Hcl Viscous21 claims
- Oxycodone Hcl21 claims
- Levetiracetam15 claims
- Celecoxib14 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 one group practice
- Prisma Health Medical Group-MidlandsColumbia, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
John Philip Mastandrea among 124 radiation oncology physician records in Maryland
John Philip Mastandrea, M.D. is one of 124 radiation oncology physician records with a practice address in Maryland. 80% 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 10% of them.
- NPI issued2006 · 10% of these records are older, 59% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 72% of these records are
- Graduated1983 · median 2006 among the 89 with a school on file
- Record last updated2025 · 65% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Radiation Oncology Physician providers in Maryland
There are 124 radiation oncology physician records in Maryland.
All 124 in Maryland → Every provider in Easton → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Lawrence Shombert, MDCumberland, MD 215021679555452
- Scott Watkins, M.D.Cumberland, MD 215021811959349
- Kwok Lee, MDFrederick, MD 217011477550986
- Alan Epstein, M.D.Fort Detrick, MD 217021992059422
- Gregory GagnonFrederick, MD 217021407854268
- Meredith Wernick, M.D., D.A.B.R.Frederick, MD 217021720386469
- Zeinab Abou Yehia, M.D.Salisbury, MD 218011699124263
- Gail Anderson, M.D.Salisbury, MD 218011871678870
Common questions
What is John Philip Mastandrea, M.D.'s NPI number?
John Philip Mastandrea, M.D.'s National Provider Identifier (NPI) is 1518999697, issued on Jul 7, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John Philip Mastandrea, M.D. located?
The NPPES record lists a practice address at 509 Idlewild Ave, Easton, MD, 21601. Phone: (410) 820-6411. Providers update this record themselves, so call before visiting.
How can I verify John Philip Mastandrea, M.D.'s license?
NPPES lists Maryland license number D0036644, 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 John Philip Mastandrea, M.D. prescribe under Medicare Part D?
In 2024, John Philip Mastandrea, M.D. had 148 Medicare Part D claims for 42 beneficiaries; the average among radiation oncology physician prescribers was 134. 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.