Maria Vasiliadis, DO
Internal Medicine Physician · West Chester, PA
Maria Vasiliadis, DO is an internal medicine physician with a practice address in West Chester, Pennsylvania, and NPI 1528221462, issued on Jul 9, 2008. Check the license (Pennsylvania OS015540, as entered in NPPES) on the Pennsylvania Department of State (PALS); the Medicare figures below come from public CMS files.
- Name
- Maria Vasiliadis
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- OS015540 PA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E Marshall Street, West Chester, PA 19380
- Phone
- (610) 431-5000
- Enumerated
- Jul 9, 2008
- Record last updated
- Jul 21, 2022
- Medicare enrollment
- Enrolled (PECOS I20110623000564); accepts Medicare assignment
- Medical or professional school
- Lake Erie College Of Osteopathic Medicine, Erie, 2008
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 7,300 in Pennsylvania → Look up another NPI →
Also registered at 701 E Marshall Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Daphne Florence, MDAnesthesiology Physician1518988757
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Verify Maria Vasiliadis in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersPennsylvania Department of State (PALS)
Search for license OS015540Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
90% fewer Medicare Part D claims than the average internal medicine physician in 2024
325 Medicare Part D claims for 153 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Furosemide19 claims
- Cefpodoxime Proxetil17 claims
- Lansoprazole15 claims
- Metoprolol Succinate15 claims
- Prednisone15 claims
- Atorvastatin Calcium14 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
- Clinical Care Associates OF The University OF Pennsylvania Health.West Chester, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Maria Vasiliadis among 7,300 internal medicine physician records in Pennsylvania
Maria Vasiliadis, DO is one of 7,300 internal medicine physician records with a practice address in Pennsylvania. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2008, is newer than 43% of them.
- NPI issued2008 · 43% of these records are older, 53% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated2008 · median 2008 among the 4,208 with a school on file
- Record last updated2022 · 56% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
57 internal medicine physician records list a practice address in West Chester
They are 57 of the 2,831 NPPES records with a practice address in West Chester, and 7,300 internal medicine physician records in Pennsylvania.
All 7,300 in Pennsylvania → Every provider in West Chester → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Douglas Atlas, MDWest Chester, PA 193801932168895
- Helise Bichefsky, DOWest Chester, PA 193801770533267
- Donald Emery, MDWest Chester, PA 193801730139130
- Renee Giometti, MDWest Chester, PA 193801639129208
- Dwight Johnson, DOWest Chester, PA 193801598738833
- Edward Ma, MDWest Chester, PA 193801730153081
- Martye Marshall, MDWest Chester, PA 193801841253648
- Richard Oyelewu, MDWest Chester, PA 193801659345601
Common questions
What is Maria Vasiliadis, DO's NPI number?
Maria Vasiliadis, DO's National Provider Identifier (NPI) is 1528221462, issued on Jul 9, 2008. An NPI identifies a provider in billing; it is not a license.
Where is Maria Vasiliadis, DO located?
The NPPES record lists a practice address at 701 E Marshall Street, West Chester, PA, 19380. Phone: (610) 431-5000. Providers update this record themselves, so call before visiting.
How can I verify Maria Vasiliadis, DO's license?
NPPES lists Pennsylvania license number OS015540, 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 Maria Vasiliadis, DO prescribe under Medicare Part D?
In 2024, Maria Vasiliadis, DO had 325 Medicare Part D claims for 153 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.