Diana Dickson-Witmer, M.D.
Specialist · Wilmington, DE
Diana Dickson-Witmer, M.D. is a specialist with a practice address in Wilmington, Delaware, and NPI 1932189131, issued on Jan 23, 2006. Check the license (Delaware C1-0002159, as entered in NPPES) with the Delaware board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Diana Dickson-Witmer
- Credential
- M.D.
- Primary taxonomy
- Specialist 174400000X
- License number
- C1-0002159 DE
Self-reported in NPPES; status is on the state search - Practice location
- 1504 N Broom St, Wilmington, DE 19806
- Phone
- (302) 656-1882
- Enumerated
- Jan 23, 2006
- Record last updated
- Nov 29, 2017 (not updated in 9 years: call before relying on the address or phone)
- Fax
- (302) 656-1883
- Medicare enrollment
- Enrolled (PECOS I20080806000083); accepts Medicare assignment
- Medical or professional school
- University Of Florida College Of Medicine, 1976
- Entity
- Type 1 · individual
Also registered at 1504 N Broom St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Dennis Young, M.D.Psychiatry Physician1124193917
Verify Diana Dickson-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 C1-0002159Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average specialist in 2024
250 Medicare Part D claims for 110 beneficiaries, against an average of 1,380 among the 8,233 providers of this specialty who prescribed in Part D.
Most prescribed
- Gabapentin84 claims
- Celecoxib62 claims
- Anastrozole32 claims
- Alprazolam27 claims
- Sulfamethoxazole-Trimethoprim11 claims
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.
Industry payments in 2024: $234.53
5 payments; by number, the most common kind was food and beverage; the largest payer was Baxter Healthcare. 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.
Bills Medicare through one group practice
- Beebe Physician Network Inc.Lewes, DE
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Specialist providers in Delaware
There are 133 specialist records in Delaware.
Other specialist records in Delaware
- Joann Agapito, PTGeorgetown, DE1538371091
- Elvis AmadiDover, DE1770943201
- Nnenna AmadiDover, DE1114387644
- Augusto Amurao, M.D.Wilmington, DE1346249042
- Stephen AnguishMiddletown, DE1184808172
- Beverly AustinWilmington, DE1467461251
- Mehdi Balakhani, M.D., D.D.S., PANewark, DE1831194224
- Megan BarnesDover, DE1417407008
- James Bastianelli, P.T.Newark, DE1205165321
- George Benes, MDNewark, DE1255332631
Common questions
What is Diana Dickson-Witmer, M.D.'s NPI number?
Diana Dickson-Witmer, M.D.'s National Provider Identifier (NPI) is 1932189131, issued on Jan 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Diana Dickson-Witmer, M.D. located?
The NPPES record lists a practice address at 1504 N Broom St, Wilmington, DE, 19806. Phone: (302) 656-1882. Providers update this record themselves, so call before visiting.
How can I verify Diana Dickson-Witmer, M.D.'s license?
NPPES lists Delaware license number C1-0002159, as entered by the provider. Search the Delaware board that licenses this profession; the NPPES record confirms identity only.
How much does Diana Dickson-Witmer, M.D. prescribe under Medicare Part D?
In 2024, Diana Dickson-Witmer, M.D. had 250 Medicare Part D claims for 110 beneficiaries; the average among specialist prescribers was 1,380. 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.