Timothy James Niesen, M.D.
Vascular & Interventional Radiology Physician · Newark, DE
Timothy James Niesen, M.D. is a vascular & interventional radiology physician with a practice address in Newark, Delaware, and NPI 1780974105, issued on Apr 19, 2011. Check the license (Delaware C1-0010245, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Timothy James Niesen
- Credential
- M.D.
- Primary taxonomy
- Vascular & Interventional Radiology Physician 2085R0204X
- License numbers
- C1-0010245 DE
MD461182 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4755 Ogletown Stanton RD, Newark, DE 19718
- Phone
- (302) 733-1806
- Enumerated
- Apr 19, 2011
- Record last updated
- Jul 7, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (302) 733-1808
- Medicare enrollment
- Enrolled (PECOS I20170821003395); accepts Medicare assignment
- Medical or professional school
- Drexel University College Of Medicine, 2011
- Entity
- Type 1 · individual
8 nearest vascular & interventional radiology physician records → All 16 in Delaware → Look up another NPI →
Also registered at 4755 Ogletown Stanton RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Paolo Abiad, M.D.Student in an Organized Health Care Education/Training Program1376487736
- Jessica AddisStudent in an Organized Health Care Education/Training Program1043950389
- Mary Adebanjo, RNMedical-Surgical Registered Nurse1972342681
- Gounathan Adly, PHARMDStudent in an Organized Health Care Education/Training Program1215357082
- Inongo Agbormbai, DOStudent in an Organized Health Care Education/Training Program1497515654
- Mansoor Ahmad, MDInterventional Cardiology Physician1184014102
Verify Timothy James Niesen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDelaware Board of Medical Licensure and Discipline
Search for license C1-0010245Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through 2 group practices
- Christiana Care Health Services IncChadds Ford, PA
- Christiana Care Pennsylvania IncWest Grove, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Timothy James Niesen among 16 vascular & interventional radiology physician records in Delaware
Timothy James Niesen, 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 2011, is newer than 38% of them.
- NPI issued2011 · 38% of these records are older, 50% newer
- In a Medicare fileYes · 100% of these records are
- In the CMS Doctors and Clinicians fileYes · 100% of these records are
- Graduated2011 · median 2011 among the 16 with a school on file
- Record last updated2021 · 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
- Uchenna Nwosu, M.D.Newark, DE 197181588921829
- Helen Paik, M.D.Newark, DE 197181851730360
- Henry Szeto, DONewark, DE 197181871055517
Common questions
What is Timothy James Niesen, M.D.'s NPI number?
Timothy James Niesen, M.D.'s National Provider Identifier (NPI) is 1780974105, issued on Apr 19, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Timothy James Niesen, M.D. located?
The NPPES record lists a practice address at 4755 Ogletown Stanton RD, Newark, DE, 19718. Phone: (302) 733-1806. Providers update this record themselves, so call before visiting.
How can I verify Timothy James Niesen, M.D.'s license?
NPPES lists Delaware license number C1-0010245, as entered by the provider. 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.
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.