Maria Vasiliadis, DO
Geriatric Medicine (Internal Medicine) Physician · West Chester, PA
Maria Vasiliadis, DO is a geriatric medicine (internal medicine) physician with a practice address in West Chester, Pennsylvania, and NPI 1417904897, issued on May 30, 2006. Check the license (Pennsylvania OS0089981, 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
- Geriatric Medicine (Internal Medicine) Physician 207RG0300X
- License number
- OS0089981 PA
Self-reported in NPPES; status is on the state search - Practice location
- 701 E Marshall St, West Chester, PA 19380
- Phone
- (610) 431-5000
- Enumerated
- May 30, 2006
- Record last updated
- Nov 22, 2016 (not updated in 10 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20060823000350); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 1994
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest geriatric medicine (internal medicine) physician records → All 228 in Pennsylvania → Look up another NPI →
Also registered at 701 E Marshall St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Douglas Ader, DO, PA-CEmergency Medicine Physician1235486838
- Katherine Ansel, PA-CPhysician Assistant1417847062
- Nicholas Archer, PA-CSurgical Physician Assistant1114171774
- Thierry Arnoult, ACNPAcute Care Nurse Practitioner1114383403
- Chloe AustinCase Management Registered Nurse1508713660
- Muhammet Ayanoglu, MDPediatrics Physician1699295428
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 OS0089981Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.5 times the Medicare Part D claims of the average geriatric medicine (internal medicine) physician in 2024
10,478 Medicare Part D claims for 507 beneficiaries, against an average of 4,246 among the 3,116 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 159 claims were for opioids.
Most prescribed
- Atorvastatin Calcium453 claims
- Levothyroxine Sodium378 claims
- Omeprazole341 claims
- Eliquis333 claims
- Furosemide290 claims
- Pantoprazole Sodium275 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.
One hospital affiliation
- Lancaster General HospitalLancaster, PA · Acute Care Hospitals5 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Maria Vasiliadis among 228 geriatric medicine (internal medicine) physician records in Pennsylvania
Maria Vasiliadis, DO is one of 228 geriatric medicine (internal medicine) physician records with a practice address in Pennsylvania. 72% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 38% newer
- In a Medicare fileYes · 72% of these records are
- In the CMS Doctors and Clinicians fileYes · 50% of these records are
- Graduated1994 · median 1998 among the 115 with a school on file
- Record last updated2016 · 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 207RG0300X and a Pennsylvania practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Geriatric Medicine (Internal Medicine) Physician providers in Pennsylvania
There are 228 geriatric medicine (internal medicine) physician records in Pennsylvania.
All 228 in Pennsylvania → Every provider in West Chester → Geriatric Medicine (Internal Medicine) Physician nationwide →
The 8 geriatric medicine (internal medicine) physician records with the nearest ZIP codes
- Harry Hutchinson, DOWest Chester, PA 193801902886534
- Anthony Bazzan, MDJeffersonville, PA 194031801938006
- Manjit Singh, M.D.Audubon, PA 194031245586940
- Gary Bernett, M.D.Kennett Square, PA 193481548204985
- Paul Cass, M.D.Kennett Square, PA 193481831127943
- Nataliya Dementovych, M.DGwynedd, PA 194361083875637
- John Goetz, MDCoatesville, PA 193201013923085
- Dennis Iaccarino, D.O.Coatesville, PA 193201386652170
Common questions
What is Maria Vasiliadis, DO's NPI number?
Maria Vasiliadis, DO's National Provider Identifier (NPI) is 1417904897, issued on May 30, 2006. 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 St, 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 OS0089981, 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 10,478 Medicare Part D claims for 507 beneficiaries; the average among geriatric medicine (internal medicine) physician prescribers was 4,246. 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.