James E. Ruether, MD
Internal Medicine Physician · Newark, DE
James E. Ruether, MD is an internal medicine physician with a practice address in Newark, Delaware, and NPI 1154391928, issued on Jan 25, 2006. Check the license (Delaware C10004869, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- James E. Ruether
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- C10004869 DE
Self-reported in NPPES; status is on the state search - Practice location
- 200 Hygeia Drive, Newark, DE 19713
- Phone
- (302) 623-0188
- Enumerated
- Jan 25, 2006
- Record last updated
- Jun 8, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (302) 623-0117
- Medicaid ID
- 0000731201 DE
- Medicare enrollment
- Enrolled (PECOS I20090130000297); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 600 in Delaware → Look up another NPI →
Also registered at 200 Hygeia Drive
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify James E. Ruether 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 C10004869Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average internal medicine physician in 2024
58 Medicare Part D claims for 23 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Christiana Care Health Services IncWilmington, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
James E. Ruether among 600 internal medicine physician records in Delaware
James E. Ruether, MD 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 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 68% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 69% of these records are
- Graduated1993 · median 2008 among the 414 with a school on file
- Record last updated2011 · 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
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- Allison Buonocore, MDNewark, DE 197131609854504
- Allen Friedland, MDNewark, DE 197131306823471
- Brijendra Kumar, MDNewark, DE 197131528048709
- Qing Liu, MDNewark, DE 197131235109000
- Stephen Menaldino, MDNewark, DE 197131487632204
Common questions
What is James E. Ruether, MD's NPI number?
James E. Ruether, MD's National Provider Identifier (NPI) is 1154391928, issued on Jan 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is James E. Ruether, MD located?
The NPPES record lists a practice address at 200 Hygeia Drive, Newark, DE, 19713. Phone: (302) 623-0188. Providers update this record themselves, so call before visiting.
How can I verify James E. Ruether, MD's license?
NPPES lists Delaware license number C10004869, 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.
How much does James E. Ruether, MD prescribe under Medicare Part D?
In 2024, James E. Ruether, MD had 58 Medicare Part D claims for 23 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.