Matthew Anthony Diamond, MD
Medical Oncology Physician · Newark, DE
Matthew Anthony Diamond, MD is a medical oncology physician with a practice address in Newark, Delaware, and NPI 1770044778, issued on Mar 31, 2019. Check the license (Delaware C1-0025066, as entered in NPPES) on the Delaware Board of Medical Licensure and Discipline; the Medicare figures below come from public CMS files.
- Name
- Matthew Anthony Diamond
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- C1-0025066 DE
MD491702 PA
Self-reported in NPPES; status is on the state search - Practice location
- 4755 Ogletown Stanton Road, Newark, DE 19718
- Phone
- (302) 623-0188
- Enumerated
- Mar 31, 2019
- Record last updated
- Jan 21, 2026
- Fax
- (302) 733-5640
- Medicare enrollment
- Enrolled (PECOS I20250926000994); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest medical oncology physician records → All 17 in Delaware → Look up another NPI →
Also registered at 4755 Ogletown Stanton Road
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Maryam Abdur-Rahman, PA-CPhysician Assistant1730329202
- Ramesh Adabala, M.D.,Internal Medicine Physician1902898596
- Demetrios Agriantonis, MDVascular & Interventional Radiology Physician1063577005
- Martha Aiken, NPFamily Nurse Practitioner1932350048
- Berniece Ajavon, CRNACertified Registered Nurse Anesthetist1609803493
- Leslie Alexander, CRNACertified Registered Nurse Anesthetist1336426857
Verify Matthew Anthony Diamond 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 C1-0025066Check 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: $21.83
1 payment: food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 3,343 providers of this specialty with any payment received $11,773.47 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 2 group practices
- Christiana Care Health Services IncNewark, DE
- St Lukes Physician Group IncStroudsburg, PA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Matthew Anthony Diamond among 17 medical oncology physician records in Delaware
Matthew Anthony Diamond, MD is one of 17 medical oncology physician records with a practice address in Delaware. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 94% of them.
- NPI issued2019 · 94% of these records are older, 0% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 76% of these records are
- Graduated2019 · median 2007 among the 13 with a school on file
- Record last updated2026 · 29% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RX0202X and a Delaware practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Oncology Physician providers in Delaware
There are 17 medical oncology physician records in Delaware.
All 17 in Delaware → Every provider in Newark → Medical Oncology Physician nationwide →
The 8 medical oncology physician records with the nearest ZIP codes
- Lydia Clements, MDNewark, DE 197131942618962
- Stephen Grubbs, MDNewark, DE 197131841268927
- Gregory Masters, MDNewark, DE 197131508834680
- Susan Schaffer Whiteman, D.O.Newark, DE 197131518997147
- Gerard Kennealey, MDWilmington, DE 198031922385046
- Victor Sandor, MDWilmington, DE 198051396933594
- Mohamad Ghraowi, MDDover, DE 199011942201439
- Ajinkya Kulkarni, MDDover, DE 199011962997668
Common questions
What is Matthew Anthony Diamond, MD's NPI number?
Matthew Anthony Diamond, MD's National Provider Identifier (NPI) is 1770044778, issued on Mar 31, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Matthew Anthony Diamond, MD located?
The NPPES record lists a practice address at 4755 Ogletown Stanton Road, Newark, DE, 19718. Phone: (302) 623-0188. Providers update this record themselves, so call before visiting.
How can I verify Matthew Anthony Diamond, MD's license?
NPPES lists Delaware license number C1-0025066, 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.
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.