William C. Dorion, CNP
Nurse Practitioner · Worcester, MA
William C. Dorion, CNP is a nurse practitioner with a practice address in Worcester, Massachusetts, and NPI 1609403922, issued on Mar 25, 2020. Check the license (Massachusetts E0910097, as entered in NPPES) with the Massachusetts board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William C. Dorion
- Credential
- CNP
- Primary taxonomy
- Nurse Practitioner 363L00000X
- License numbers
- E0910097 MA
RN2291576 MA
12.013832 CT
Self-reported in NPPES; status is on the state search - Practice location
- 55 Lake Ave N, Worcester, MA 01655
- Phone
- (508) 421-1400
- Enumerated
- Mar 25, 2020
- Record last updated
- Jul 14, 2025
- Fax
- (508) 421-1490
- Medicaid ID
- 110161526A MA
- Medicare enrollment
- Enrolled (PECOS I20241112001509); accepts Medicare assignment
- Medical or professional school
- Sioux City College Of Medicine, 2020
- Entity
- Type 1 · individual
8 nearest nurse practitioner records → All 3,480 in Massachusetts → Look up another NPI →
Also registered at 55 Lake Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify William C. Dorion in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Massachusetts board licenses this profession
Search for license E0910097Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
92% fewer Medicare Part D claims than the average nurse practitioner in 2024
84 Medicare Part D claims for 51 beneficiaries, against an average of 1,109 among the 54,319 providers of this specialty who prescribed in Part D.
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 MIPS final score for 2023 (Medicare payment program): 97 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $19.54
1 payment: food and beverage; the largest payer was GlaxoSmithKline, LLC. The 38,884 providers of this specialty with any payment received $791.64 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
- Cep America LLCStafford Springs, CT
- Umass Memorial Medical Group IncWorcester, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William C. Dorion among 3,480 nurse practitioner records in Massachusetts
William C. Dorion, CNP is one of 3,480 nurse practitioner records with a practice address in Massachusetts. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 68% of them.
- NPI issued2020 · 68% of these records are older, 25% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 56% of these records are
- Graduated2020 · median 2017 among the 1,963 with a school on file
- Record last updated2025 · 52% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363L00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
499 nurse practitioner records list a practice address in Worcester
They are 499 of the 13,166 NPPES records with a practice address in Worcester, and 3,480 nurse practitioner records in Massachusetts.
All 3,480 in Massachusetts → Every provider in Worcester → Nurse Practitioner nationwide →
The 8 nurse practitioner records with the nearest ZIP codes
- Patricia Amelin, CNPWorcester, MA 016551174597447
- Deborah Benes, N.P.Worcester, MA 016551548258890
- Janice Beschle, NPWorcester, MA 016551376517995
- Carol Bova, NPWorcester, MA 016551679547285
- Dawn Carpenter, NPWorcester, MA 016551366416968
- Dianne Carter, NPWorcester, MA 016551083688394
- Ann Connolly, NPWorcester, MA 016551841264157
- Maria Cote, CNPWorcester, MA 016551689648982
Common questions
What is William C. Dorion, CNP's NPI number?
William C. Dorion, CNP's National Provider Identifier (NPI) is 1609403922, issued on Mar 25, 2020. An NPI identifies a provider in billing; it is not a license.
Where is William C. Dorion, CNP located?
The NPPES record lists a practice address at 55 Lake Ave N, Worcester, MA, 01655. Phone: (508) 421-1400. Providers update this record themselves, so call before visiting.
How can I verify William C. Dorion, CNP's license?
NPPES lists Massachusetts license number E0910097, as entered by the provider. Search the Massachusetts board that licenses this profession; the NPPES record confirms identity only.
How much does William C. Dorion, CNP prescribe under Medicare Part D?
In 2024, William C. Dorion, CNP had 84 Medicare Part D claims for 51 beneficiaries; the average among nurse practitioner prescribers was 1,109. Part D covers Medicare prescriptions only.
What is William C. Dorion, CNP's MIPS final score?
The 2023 MIPS final score is 97 of 100. 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.