Cynthia A. Diefenbeck, CNS
Psychiatric/Mental Health Clinical Nurse Specialist · Newark, DE
Cynthia A. Diefenbeck, CNS is a psychiatric/mental health clinical nurse specialist with a practice address in Newark, Delaware, and NPI 1578750915, issued on Oct 1, 2007. Check the license (Delaware LE-0000143, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Cynthia A. Diefenbeck
- Credential
- CNS
- Primary taxonomy
- Psychiatric/Mental Health Clinical Nurse Specialist 364SP0808X
- License number
- LE-0000143 DE
Self-reported in NPPES; status is on the state search - Practice location
- 910 S Chapel St, Newark, DE 19713
- Phone
- (302) 224-1400
- Enumerated
- Oct 1, 2007
- Record last updated
- Nov 15, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (302) 224-1402
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health clinical nurse specialist records → All 10 in Delaware → Look up another NPI →
Also registered at 910 S Chapel St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Traci Bolander, PSY.D.Clinical Psychologist1528162625
- Akeana Boyd-Douglas, PSY.D.Clinical Psychologist1578905428
- Christopher Burdge, MACounselor1992587026
- Elizabeth Catalano, LPCMHMental Health Counselor1669829768
- Laura Cooney-Koss, PSY.D.Clinical Psychologist1174743025
- Kathleen Deford, LCSW / MSWClinical Social Worker1679877864
Verify Cynthia A. Diefenbeck in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Delaware board licenses this profession
Search for license LE-0000143Check 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: $212.45
7 payments; by number, the most common kind was food and beverage; the largest payer was Lundbeck LLC. The 285 providers of this specialty with any payment received $924.95 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.
Cynthia A. Diefenbeck among 10 psychiatric/mental health clinical nurse specialist records in Delaware
Cynthia A. Diefenbeck, CNS is one of 10 psychiatric/mental health clinical nurse specialist records with a practice address in Delaware. 80% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 40% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileNo · 40% of these records are
- Record last updated2011 · 80% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 364SP0808X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Clinical Nurse Specialist providers in Delaware
There are 10 psychiatric/mental health clinical nurse specialist records in Delaware.
All 10 in Delaware → Every provider in Newark → Psychiatric/Mental Health Clinical Nurse Specialist nationwide →
The 8 psychiatric/mental health clinical nurse specialist records with the nearest ZIP codes
- Cheryl Grant, CNSNewark, DE 197181821530197
- Laura Hummel, APN, BC, CADCWilmington, DE 198011457437774
- Lisa Toy, PMHCNS-BCWilmington, DE 198031114005113
- Jennifer Graber, EDD, PMHCNS-BCWilmington, DE 198071649023441
- Anita Bains, MS RN CSPWilmington, DE 198081811037559
- Karen Gibble, APRN, BCWilmington, DE 198081619910775
- Jennifer Rogers, CRNP, PMHNP, FNP-BCWilmington, DE 198081922423755
- Kathleen Potter, MN ARNPDover, DE 199041881606895
Common questions
What is Cynthia A. Diefenbeck, CNS's NPI number?
Cynthia A. Diefenbeck, CNS's National Provider Identifier (NPI) is 1578750915, issued on Oct 1, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Cynthia A. Diefenbeck, CNS located?
The NPPES record lists a practice address at 910 S Chapel St, Newark, DE, 19713. Phone: (302) 224-1400. Providers update this record themselves, so call before visiting.
How can I verify Cynthia A. Diefenbeck, CNS's license?
NPPES lists Delaware license number LE-0000143, 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.