DR. DENNIS R WITMER MD
NPI 1477533677
Specialist in Newark, DE
About Dr. Dennis R Witmer Md NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. DENNIS R WITMER MD (NPI 1477533677) is an individual specialist in Newark, Delaware, licensed in Delaware (C1-0001969) and active in the NPI registry since January 2006. He is enrolled in Medicare PECOS.
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 1
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Dr. Dennis R Witmer Md is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Medicare Billing Reassignments
2Medicare enrollment records show Dennis Witmer reassigns Medicare billing to 2 organizations. Each organization bills Medicare for the services this provider delivers there; the nearest is listed first.
Newark, DE 19718
- Reassigned Medicare billing, Delaware enrollment
- 1,531 clinicians in this Medicare group
Elkton, MD 21921
- Reassigned Medicare billing, Maryland enrollment
- 512 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.
Other Providers at the Same Location NPPES 11
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
NEWARK, DE 19713
NEWARK, DE 19713
NEWARK, DE 19713
NEWARK, DE 19713
NEWARK, DE 19713
NEWARK, DE 19713
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 Dennis Witmer's NPI number?
The NPI number for Dennis Witmer is 1477533677. It was assigned to this individual provider in the NPPES registry on January 23, 2006.
Where is Dennis Witmer located?
Dennis Witmer practices at 4735 Ogletown Stanton Road Suite 3301, Newark, DE 19713. The listed phone number is (302) 623-4370.
What is Dennis Witmer's specialty?
The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.
Is Dennis Witmer enrolled in Medicare?
Yes. Dennis Witmer is registered in the Medicare PECOS enrollment system.
Which organizations bill Medicare for Dennis Witmer's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Dennis Witmer reassigns Medicare benefits to 2 organizations: Christiana Care Health Services, Inc (Newark, DE) and Union Hospital Of Cecil County, Inc. (Elkton, MD). Each 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 Dennis Witmer's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does Dennis Witmer accept?
Health plans from AmeriHealth Caritas Next list Dennis Witmer as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for Dennis Witmer was last updated on November 20, 2015. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 10 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.
# Dr. Dennis R Witmer, MD · NPI 1477533677
Specialist provider in Newark, Delaware. Individual provider, active in the CMS NPPES registry since January 23, 2006.
## Identity
- **NPI:** 1477533677 (Entity type: Individual)
- **Enumerated:** January 23, 2006
- **Primary specialty:** Specialist · taxonomy 174400000X
- **State license:** C1-0001969 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 4735 OGLETOWN STANTON ROAD, SUITE 3301, Newark, DE 19713-2067
- **Phone:** (302) 623-4370 · **Fax:** (302) 656-1883
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Ordering & referring:** eligible for Part B labs & imaging, durable medical equipment, home health, power mobility devices
- **Bills Medicare through:** 2 organizations under Medicare reassignment (form CMS-855R): Christiana Care Health Services, Inc (NPI 1104896596, Newark, DE); Union Hospital Of Cecil County, Inc. (NPI 1407607450, Elkton, MD) · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** November 20, 2015
- **Other identifiers:** Medicare PIN 050407
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Source: [NPI Profile](https://npiprofile.com/npi/1477533677) · Data from the CMS NPPES public registry.