Dennis R. Witmer, MD
Specialist · Newark, DE
Dennis R. Witmer, MD is a specialist with a practice address in Newark, Delaware, and NPI 1477533677, issued on Jan 23, 2006. Check the license (Delaware C1-0001969, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis R. Witmer
- Credential
- MD
- Primary taxonomy
- Specialist 174400000X
- License number
- C1-0001969 DE
Self-reported in NPPES; status is on the state search - Practice location
- 4735 Ogletown Stanton Road, Newark, DE 19713
- Phone
- (302) 623-4370
- Enumerated
- Jan 23, 2006
- Record last updated
- Nov 20, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (302) 656-1883
- Entity
- Type 1 · individual
8 nearest specialist records → All 133 in Delaware → Look up another NPI →
Also registered at 4735 Ogletown Stanton Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Dennis R. Witmer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license C1-0001969Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $251.89
3 payments; by number, the most common kind was food and beverage; the largest payer was Leica Microsystems Inc. The 5,844 providers of this specialty with any payment received $4,760.79 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Dennis R. Witmer among 133 specialist records in Delaware
Dennis R. Witmer, MD is one of 133 specialist records with a practice address in Delaware. 32% 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 15% of them.
- NPI issued2006 · 15% of these records are older, 53% newer
- In a Medicare fileYes · 32% of these records are
- In the CMS Doctors and Clinicians fileNo · 22% of these records are
- Record last updated2015 · 88% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 174400000X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Specialist providers in Delaware
There are 133 specialist records in Delaware.
All 133 in Delaware → Every provider in Newark → Specialist nationwide →
The 8 specialist records with the nearest ZIP codes
- Mehdi Balakhani, M.D., D.D.S., PANewark, DE 197131831194224
- Rosemarie Ciarrocchi, PA-CNewark, DE 197131518962497
- Kieran ConnollyNewark, DE 197131700828332
- Matthew Eppley, MDNewark, DE 197131467441766
- David Fink, M.D.Newark, DE 197131255338844
- Grace Goracci, MDNewark, DE 197131891794178
- Neil Hockstein, M.D.Newark, DE 197131831131317
- Siamak Samii, MDNewark, DE 197131699773853
Common questions
What is Dennis R. Witmer, MD's NPI number?
Dennis R. Witmer, MD's National Provider Identifier (NPI) is 1477533677, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis R. Witmer, MD located?
The NPPES record lists a practice address at 4735 Ogletown Stanton Road, Newark, DE, 19713. Phone: (302) 623-4370. Providers update this record themselves, so call before visiting.
How can I verify Dennis R. Witmer, MD's license?
NPPES lists Delaware license number C1-0001969, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity 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.