Willy Widjaya, M.D.
Internal Medicine Physician · Newark, DE
Willy Widjaya, M.D. is an internal medicine physician with a practice address in Newark, Delaware, and NPI 1629451463, issued on Jun 29, 2015. Check the license (Delaware C1-0012545, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Willy Widjaya
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- C1-0012545 DE
P31998 MD
Self-reported in NPPES; status is on the state search - Practice location
- 4755 Ogletown Stanton RD Ste 5A43, Newark, DE 19718
- Phone
- (302) 623-0188
- Enumerated
- Jun 29, 2015
- Record last updated
- Jan 3, 2022
- Medicare enrollment
- Enrolled (PECOS I20180702001469); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Also registered at 4755 Ogletown Stanton RD Ste 5A43
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Willy Widjaya 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 C1-0012545Check 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 one group practice
- Christiana Care Health Services IncNewark, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Willy Widjaya among 600 internal medicine physician records in Delaware
Willy Widjaya, M.D. is one of 600 internal medicine physician records with a practice address in Delaware. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 61% of them.
- NPI issued2015 · 61% of these records are older, 36% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated2010 · median 2008 among the 414 with a school on file
- Record last updated2022 · 49% 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 Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
240 internal medicine physician records list a practice address in Newark
They are 240 of the 4,662 NPPES records with a practice address in Newark, and 600 internal medicine physician records in Delaware.
All 600 in Delaware → Every provider in Newark → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Ramesh Adabala, M.D.,Newark, DE 197181902898596
- Mohammed Ali, MD,FACPNewark, DE 197181982769394
- Diane Bohner, MDNewark, DE 197181538144266
- Christian Coletti, M.D.Newark, DE 197181821133257
- Kevin Copeland, D.O.Newark, DE 197181265563571
- Roshni Guerry, MDNewark, DE 197181801808308
- Azhar Khan, M.D.Newark, DE 197181851362909
- Asma Mian, M.D.Newark, DE 197181144290453
Common questions
What is Willy Widjaya, M.D.'s NPI number?
Willy Widjaya, M.D.'s National Provider Identifier (NPI) is 1629451463, issued on Jun 29, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Willy Widjaya, M.D. located?
The NPPES record lists a practice address at 4755 Ogletown Stanton RD Ste 5A43, Newark, DE, 19718. Phone: (302) 623-0188. Providers update this record themselves, so call before visiting.
How can I verify Willy Widjaya, M.D.'s license?
NPPES lists Delaware license number C1-0012545, 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.