DR. THOMAS KEITH SHEEHAN II DO
NPI 1821477324
Internal Medicine in Newark, DE
About Dr. Thomas Keith Sheehan Ii Do NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
DR. THOMAS KEITH SHEEHAN II DO (NPI 1821477324) is an individual internal medicine provider in Newark, Delaware, licensed in Delaware (C2-0012778) and active in the NPI registry since May 2015. He is enrolled in Medicare PECOS and is a graduate of Lake Erie College Of Osteopathic Medicine, Erie (2015).
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
Dr. Thomas Keith Sheehan Ii Do 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 Thomas Sheehan 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 5
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.
Physician 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 2
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 Thomas Sheehan's NPI number?
The NPI number for Thomas Sheehan is 1821477324. It was assigned to this individual provider in the NPPES registry on May 29, 2015.
Where is Thomas Sheehan located?
Thomas Sheehan practices at 4755 Ogletown Stanton Road Suite 5a43, Newark, DE 19718. The listed phone number is (302) 623-0188.
What is Thomas Sheehan's specialty?
The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.
Is Thomas Sheehan enrolled in Medicare?
Yes. Thomas Sheehan 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 Thomas Sheehan's services?
According to the CMS Revalidation Reassignment List (October 2026 release), Thomas Sheehan 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 Thomas Sheehan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
When was this NPI record last updated?
The NPPES record for Thomas Sheehan was last updated on September 10, 2018. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 8 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. Thomas Keith Sheehan II, DO · NPI 1821477324
Internal Medicine physician in Newark, Delaware. Individual provider, active in the CMS NPPES registry since May 29, 2015.
## Identity
- **NPI:** 1821477324 (Entity type: Individual)
- **Enumerated:** May 29, 2015
- **Primary specialty:** Internal Medicine · taxonomy 207R00000X
- **State license:** C2-0012778 (Delaware)
- **Sole proprietor:** No
## Practice location
- **Address:** 4755 OGLETOWN STANTON ROAD, SUITE 5A43, Newark, DE 19718-2200
- **Phone:** (302) 623-0188 · **Fax:** (302) 733-5640
## 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:** Lake Erie College Of Osteopathic Medicine, Erie, class of 2015
## Record status
- **NPPES last updated:** September 10, 2018
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Source: [NPI Profile](https://npiprofile.com/npi/1821477324) · Data from the CMS NPPES public registry.