William Arthur Castrucci, MD
Radiation Oncology Physician · Brewer, ME
William Arthur Castrucci, MD is a radiation oncology physician with a practice address in Brewer, Maine, and NPI 1396927604, issued on Nov 28, 2007. Check the license (Maine 018168, as entered in NPPES) on the Maine Board of Licensure in Medicine; the Medicare figures below come from public CMS files.
- Name
- William Arthur Castrucci
- Credential
- MD
- Primary taxonomy
- Radiation Oncology Physician 2085R0001X
- License number
- 018168 ME
Self-reported in NPPES; status is on the state search - Practice location
- 33 Whiting Hill RD, Brewer, ME 04412
- Phone
- (207) 973-7499
- Enumerated
- Nov 28, 2007
- Record last updated
- Oct 4, 2023
- Fax
- (207) 973-7630
- Medicaid ID
- 434641199 ME
- Medicare enrollment
- Enrolled (PECOS I20090921000122); accepts Medicare assignment
- Medical or professional school
- Geisel School Of Medicine At Dartmouth, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest radiation oncology physician records → All 27 in Maine → Look up another NPI →
Also registered at 33 Whiting Hill RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ayotola Ajayi, MDPediatric Hematology & Oncology Physician1447736962
- Erdem Altunel, MDHematology & Oncology Physician1619462884
- Ellen Arey, RNFamily Nurse Practitioner1508206822
- Sigrid Berg, MDHematology & Oncology Physician1972665834
- Philip Brooks, MDHematology & Oncology Physician1942254818
- Daniel Callaway, M.D.Pediatric Hematology & Oncology Physician1134428899
Verify William Arthur Castrucci in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaine Board of Licensure in Medicine
Search for license 018168Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
32% fewer Medicare Part D claims than the average radiation oncology physician in 2024
91 Medicare Part D claims for 43 beneficiaries, against an average of 134 among the 4,851 providers of this specialty who prescribed in Part D.
Most prescribed
- Memantine Hcl20 claims
- Dexamethasone15 claims
- Tamsulosin Hcl13 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.
The practice group's MIPS final score for 2023 (Medicare payment program): 88 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $41.33
2 payments; by number, the most common kind was food and beverage; the largest payer was Pfizer Inc. The 3,275 providers of this specialty with any payment received $1,897.85 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
- Northeast Radiation Oncology PABrewer, ME
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Arthur Castrucci among 27 radiation oncology physician records in Maine
William Arthur Castrucci, MD is one of 27 radiation oncology physician records with a practice address in Maine. 74% 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 48% of them.
- NPI issued2007 · 48% of these records are older, 44% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 63% of these records are
- Graduated1996 · median 2012 among the 17 with a school on file
- Record last updated2023 · 26% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2085R0001X and a Maine practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
7 radiation oncology physician records list a practice address in Brewer
They are 7 of the 359 NPPES records with a practice address in Brewer, and 27 radiation oncology physician records in Maine.
All 27 in Maine → Every provider in Brewer → Radiation Oncology Physician nationwide →
The 8 radiation oncology physician records with the nearest ZIP codes
- Janeen Daniels, M.D.Brewer, ME 044121063708097
- Peter Lambert, MDBrewer, ME 044121053360891
- Julia Manzerova, M.D./PH.D.Brewer, ME 044121336409663
- Kurt Snyder, M.D.Brewer, ME 044121477538304
- John Swalec, MDBrewer, ME 044121881644490
- Paul Szal, MDBrewer, ME 044121568412559
- Susan Tyler, MD, MSC, FRCPCBangor, ME 044011356900328
- John Drogos, MDAugusta, ME 043301639699929
Common questions
What is William Arthur Castrucci, MD's NPI number?
William Arthur Castrucci, MD's National Provider Identifier (NPI) is 1396927604, issued on Nov 28, 2007. An NPI identifies a provider in billing; it is not a license.
Where is William Arthur Castrucci, MD located?
The NPPES record lists a practice address at 33 Whiting Hill RD, Brewer, ME, 04412. Phone: (207) 973-7499. Providers update this record themselves, so call before visiting.
How can I verify William Arthur Castrucci, MD's license?
NPPES lists Maine license number 018168, as entered by the provider. Search the Maine Board of Licensure in Medicine at https://www.maine.gov/md/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does William Arthur Castrucci, MD prescribe under Medicare Part D?
In 2024, William Arthur Castrucci, MD had 91 Medicare Part D claims for 43 beneficiaries; the average among radiation oncology physician prescribers was 134. Part D covers Medicare prescriptions only.
What is William Arthur Castrucci, MD's MIPS final score?
The 2023 MIPS final score is 88 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
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.