Dennis D. Beckworth, MD
Medical Oncology Physician · Dededo, GU
Dennis D. Beckworth, MD is a medical oncology physician with a practice address in Dededo, Guam, and NPI 1265460661, issued on Jun 28, 2006. Check the license (Guam M-2121, as entered in NPPES) with the Guam board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Dennis D. Beckworth
- Credential
- MD
- Primary taxonomy
- Medical Oncology Physician 207RX0202X
- License numbers
- M-2121 GU
MTL-2018-007 GU
MD11142 OR
4225 AK
M-14552 ID
Self-reported in NPPES; status is on the state search - Practice location
- 133 Route 3, Dededo, GU 96929
- Phone
- (671) 645-5546
- Enumerated
- Jun 28, 2006
- Record last updated
- Jan 20, 2024
- Fax
- (671) 645-5549
- Medicaid IDs
- 1009058 AK
MD07772 AK - Medicare enrollment
- Enrolled (PECOS I20231109001108); accepts Medicare assignment
- Medical or professional school
- University Of Arkansas College Of Medicine, 1971
- Entity
- Type 1 · individual
1 nearest medical oncology physician record → All 2 in Guam → Look up another NPI →
Also registered at 133 Route 3
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Agustin, M.D.Pulmonary Disease Physician1215248356
- Najmeh Akhavan, M.D.Internal Medicine Physician1386805356
- Mohamad Alsabban, M.D.Cytopathology Physician1942226790
- Jeno Aquino, DPTPhysical Therapist1225866569
- Janice BaldonadoHealth Educator1861958837
- Woonjeong Banks, CRNARegistered Nurse1396996393
Verify Dennis D. Beckworth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Guam board licenses this profession
Search for license M-2121Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
72% fewer Medicare Part D claims than the average medical oncology physician in 2024
194 Medicare Part D claims for 46 beneficiaries, against an average of 703 among the 4,230 providers of this specialty who prescribed in Part D. Brand-name drugs were 43% of claims.
Most prescribed
- Imatinib Mesylate19 claims
- Calquence18 claims
- Prochlorperazine Maleate17 claims
- Ondansetron Odt15 claims
- Sprycel14 claims
- Brukinsa11 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.
Bills Medicare through 2 group practices
- St Joseph Hospital LLCLewiston, ID
- St Lukes Clinic-Treasure Valley LLCBoise, ID
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Medical Oncology Physician providers in Guam
There are 2 medical oncology physician records in Guam.
All 2 in Guam → Every provider in Dededo → Medical Oncology Physician nationwide →
The 1 medical oncology physician record with the nearest ZIP codes
- Ivan Lowenthal, M.D.Tamuning, GU 969131043245889
Common questions
What is Dennis D. Beckworth, MD's NPI number?
Dennis D. Beckworth, MD's National Provider Identifier (NPI) is 1265460661, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis D. Beckworth, MD located?
The NPPES record lists a practice address at 133 Route 3, Dededo, GU, 96929. Phone: (671) 645-5546. Providers update this record themselves, so call before visiting.
How can I verify Dennis D. Beckworth, MD's license?
NPPES lists Guam license number M-2121, as entered by the provider. Search the Guam board that licenses this profession; the NPPES record confirms identity only.
How much does Dennis D. Beckworth, MD prescribe under Medicare Part D?
In 2024, Dennis D. Beckworth, MD had 194 Medicare Part D claims for 46 beneficiaries; the average among medical oncology physician prescribers was 703. 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.