WILLY WIDJAYA M.D.
NPI 1629451463
Internal Medicine in Newark, DE
About Willy Widjaya M.d. NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
WILLY WIDJAYA M.D. (NPI 1629451463) is an individual internal medicine provider in Newark, Delaware, licensed in Delaware (C1-0012545) and active in the NPI registry since June 2015. He is enrolled in Medicare PECOS, is affiliated with Union Hospital Of Cecil County, and is a graduate of Other (2010).
NPPES Registry Identity
Specialties & Licenses
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Willy Widjaya M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show Willy Widjaya reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Newark, DE 19713
- Reassigned Medicare billing, Delaware enrollment
- 460 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims 2
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Hospital Affiliations CMS Care Compare
Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.
Union Hospital Of Cecil County
Acute Care Hospitals · Elkton, MDPhysician Visit Costs CMS claims · ZIP area
Typical Medicare office-visit costs in the 19718 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.
Referred Medical Equipment & Supplies CMS DME claims
Durable medical equipment, devices and supplies this provider ordered from DME suppliers for patients, from Medicare fee-for-service claims.
Other Providers at the Same Location NPPES 20
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWARK, DE 19718
NEWARK, DE 19718
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is Willy Widjaya's NPI number?
The NPI number for Willy Widjaya is 1629451463. It was assigned to this individual provider in the NPPES registry on June 29, 2015.
Where is Willy Widjaya located?
Willy Widjaya practices at 4755 Ogletown Stanton Rd Ste 5a43, Newark, DE 19718. The listed phone number is (302) 623-0188.
What is Willy Widjaya's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Willy Widjaya enrolled in Medicare?
Yes. Willy Widjaya is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for Willy Widjaya's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Willy Widjaya reassigns Medicare benefits to Christiana Care Health Services Inc (Newark, DE). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Willy Widjaya's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
Is Willy Widjaya affiliated with any hospitals?
According to CMS data, Willy Widjaya is affiliated with Union Hospital Of Cecil County.
When was this NPI record last updated?
The NPPES record for Willy Widjaya was last updated on January 3, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Willy Widjaya, M.D. · NPI 1629451463
Internal Medicine physician in Newark, Delaware. Individual provider, active in the CMS NPPES registry since June 29, 2015.
## Identity
- **NPI:** 1629451463 (Entity type: Individual)
- **Enumerated:** June 29, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C1-0012545 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 4755 OGLETOWN STANTON RD STE 5A43, Newark, DE 19718-2200
- **Phone:** (302) 623-0188
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** Christiana Care Health Services Inc (NPI 1245474329, Newark, DE), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Other, class of 2010
## Record status
- **NPPES last updated:** January 3, 2022
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Source: [NPI Profile](https://npiprofile.com/npi/1629451463) · Data from the CMS NPPES public registry.