William Harry Hartz, M.D.
Vascular & Interventional Radiology Physician · Newark, DE
William Harry Hartz, M.D. is a vascular & interventional radiology physician with a practice address in Newark, Delaware, and NPI 1194721803, issued on Jun 27, 2005. Check the license on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- William Harry Hartz
- Credential
- M.D.
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License numbers
- 35.132810 OH
MD022230E PA
Self-reported in NPPES; status is on the state search - Practice location
- H-42 Omega Drive, Newark, DE 19713
- Phone
- (302) 738-1700
- Enumerated
- Jun 27, 2005
- Record last updated
- May 18, 2026
- Fax
- (302) 738-0100
- Medicaid ID
- 000944944 PA
- Medicare enrollment
- Enrolled (PECOS I20040127000786); may accept Medicare assignment
- Medical or professional school
- Hahnemann University College Of Medicine, 1978
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 16 in Delaware → Look up another NPI →
Also registered at H-42 Omega Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Richard Chesnick, M.D.Diagnostic Radiology Physician1760584312
Verify William Harry Hartz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and DisciplineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
69% fewer Medicare Part D claims than the average vascular & interventional radiology physician in 2024
23 Medicare Part D claims, against an average of 75 among the 1,444 providers of this specialty who prescribed in Part D. Brand-name drugs were 52% of claims.
Most prescribed
- Symbicort11 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.
12 hospitals and group practices
- Union Hospital OF Cecil CountyElkton, MD · Acute Care Hospitals4 of 5 stars
- Hurley Medical CenterFlint, MI · Acute Care Hospitals2 of 5 stars
- Blessing HospitalHannibal, MO
- Columbus Radiology CorpWynnewood, PA
- Empire State Radiology P CWynnewood, PA
- Greensboro Radiology, PAWynnewood, PA
- Imaging Associates OF Michigan PLLCMillersville, PA
- Louisville Radiology Imaging Consultants PLLCWynnewood, PA
- Mori Bean And Brooks IncUpper Saint Clair, PA
- Radiology Affiliates OF Central New Jersey PCWynnewood, PA
- Radiology Alliance PCPhiladelphia, PA
- Radiology Associates OF Southwest LouisianaWynnewood, PA
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.
William Harry Hartz among 16 vascular & interventional radiology physician records in Delaware
William Harry Hartz, M.D. is one of 16 vascular & interventional radiology physician records with a practice address in Delaware. 100% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 94% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 100% of these records are
- Graduated1978 · median 2011 among the 16 with a school on file
- Record last updated2026 · 19% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0204X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Vascular & Interventional Radiology Physician providers in Delaware
There are 16 vascular & interventional radiology physician records in Delaware.
All 16 in Delaware → Every provider in Newark → Vascular & Interventional Radiology Physician nationwide →
The 8 vascular & interventional radiology physician records with the nearest ZIP codes
- Demetrios Agriantonis, MDNewark, DE 197181063577005
- Assaf Graif, MDNewark, DE 197181598051781
- Christopher Grilli, D.O.Newark, DE 197181134395445
- Daniel Leung, M.D.Newark, DE 197181740375690
- Xavier Mohammed, MDNewark, DE 197181366974073
- Timothy Niesen, M.D.Newark, DE 197181780974105
- Uchenna Nwosu, M.D.Newark, DE 197181588921829
- Helen Paik, M.D.Newark, DE 197181851730360
Common questions
What is William Harry Hartz, M.D.'s NPI number?
William Harry Hartz, M.D.'s National Provider Identifier (NPI) is 1194721803, issued on Jun 27, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Harry Hartz, M.D. located?
The NPPES record lists a practice address at H-42 Omega Drive, Newark, DE, 19713. Phone: (302) 738-1700. Providers update this record themselves, so call before visiting.
How can I verify William Harry Hartz, M.D.'s license?
Search the Delaware Board of Medical Licensure and Discipline at https://delpros.delaware.gov/OH_VerifyLicense. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Harry Hartz, M.D. prescribe under Medicare Part D?
In 2024, William Harry Hartz, M.D. had 23 Medicare Part D claims; the average among vascular & interventional radiology physician prescribers was 75. 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.