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Edit this profileBased in Newark, DE, Matthew A. Diamond, MD is listed in the NPI registry under medical oncology. Matthew is also listed as specializing in internal medicine. According to Medicare claims data, Matthew cared for 59 Medicare patients across 59 services. The services billed most often include initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes and initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes. NPI 1770044778 identifies this record in the national registry.
Factual summary compiled by Guide.md from public records; not written by this provider.
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
4755 OGLETOWN STANTON ROAD SUITE 5A43
Newark, DE 19718
1600 St Lukes Blvd
Easton, PA 18045
Within Medical Oncology generally. Availability varies by clinician, training and location — this profile has not been claimed, so nothing here is a personal claim by the provider.
Most searched conditions
Abdominal cancer
Blood cancer
Blood disorders
Cancer complications
Chest cancer
Complications
Digestive cancer
Digestive cancers
Endocrine cancer
Endocrine cancers
Eye cancer
General oncology
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Gynecologic cancer
Gynecologic cancers
Head and neck
Head and neck cancer
Metastatic cancer
Metastatic disease
Neurologic cancers
Sarcomas
Skin cancer
Symptom evaluation
Thoracic cancers
Treatment side effects
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Most searched procedures
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Procedures
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Supportive care
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59 services · 59 patients · 2 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Initial hospital care with straightforward or low-level medical decision making, if using time, at least 55 minutes | Office visit | 99222 |
39 | More often than most peers in Medical Oncology |
| Initial hospital care with straightforward or low level of medical decision making, per day, if using time, at least 40 minutes | Office visit | 99221 |
20 | More often than most peers in Medical Oncology |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Dr. Diamond is an oncologist in Newark, DE. That is the designation recorded for this NPI in the federal registry, where it is listed as “Medical Oncology”.
NPI registry
Dr. Diamond is listed at 4755 Ogletown Stanton Road Suite 5A43, Newark, DE 19718. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
The number on file is (302) 623-0188. Contact the office directly to confirm availability and scheduling.
NPI registry
Dr. Diamond's National Provider Identifier is 1770044778. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Dr. Diamond attended Other, graduating in 2019. This comes from the CMS National Downloadable File.
CMS public data
Dr. Diamond has 7 years experience. Calculated from a graduation year of 2019, reported in the CMS National Downloadable File.
CMS public data
According to Medicare billing data, Dr. Diamond the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Diamond. If this is you, claiming it is free.
Guide.md
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