William Joseph Alfieri, DC
Chiropractor · Portage, MI
William Joseph Alfieri, DC is a chiropractor with a practice address in Portage, Michigan, and NPI 1437143203, issued on Sep 7, 2005. Check the license (Michigan WM004080, as entered in NPPES) with the Michigan board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- William Joseph Alfieri
- Credential
- DC
- Primary taxonomy
- Chiropractor 111N00000X
- License number
- WM004080 MI
Self-reported in NPPES; status is on the state search - Practice location
- 925 W Milham Ave, Portage, MI 49024
- Phone
- (269) 327-8990
- Enumerated
- Sep 7, 2005
- Record last updated
- Mar 14, 2008 (not updated in 18 years: call before relying on the address or phone)
- Fax
- (269) 327-6214
- Medicare enrollment
- Enrolled (PECOS I20080204000667); accepts Medicare assignment
- Medical or professional school
- Palmer College Chiropractic - Davenport, 1979
- Entity
- Type 1 · individual
8 nearest chiropractor records → All 3,058 in Michigan → Look up another NPI →
Also registered at 925 W Milham Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nicholas Alfieri, D.C.Chiropractor1659602308
Verify William Joseph Alfieri in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Michigan board licenses this profession
Search for license WM004080Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Bills Medicare through one group practice
- William J Alfieri DC PCPortage, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
William Joseph Alfieri among 3,058 chiropractor records in Michigan
William Joseph Alfieri, DC is one of 3,058 chiropractor records with a practice address in Michigan. 25% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.
- NPI issued2005 · 0% of these records are older, 93% newer
- In a Medicare fileYes · 25% of these records are
- In the CMS Doctors and Clinicians fileYes · 57% of these records are
- Graduated1979 · median 2005 among the 1,743 with a school on file
- Record last updated2008 · 74% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 111N00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
25 chiropractor records list a practice address in Portage
They are 25 of the 1,492 NPPES records with a practice address in Portage, and 3,058 chiropractor records in Michigan.
All 3,058 in Michigan → Every provider in Portage → Chiropractor nationwide →
The 8 chiropractor records with the nearest ZIP codes
- Nicholas Alfieri, D.C.Portage, MI 490241659602308
- Charles Carpentier, DCPortage, MI 490241417026386
- Jaan Douma, D.C.Portage, MI 490241912059668
- Megan Gotham, DCPortage, MI 490241972293215
- Sarah Malarney, D.C.Portage, MI 490241225434871
- Ryan Malarney, DCPortage, MI 490241295192748
- Michael Martini, DCPortage, MI 490241811548555
- Lauren MeiselPortage, MI 490241598587313
Common questions
What is William Joseph Alfieri, DC's NPI number?
William Joseph Alfieri, DC's National Provider Identifier (NPI) is 1437143203, issued on Sep 7, 2005. An NPI identifies a provider in billing; it is not a license.
Where is William Joseph Alfieri, DC located?
The NPPES record lists a practice address at 925 W Milham Ave, Portage, MI, 49024. Phone: (269) 327-8990. Providers update this record themselves, so call before visiting.
How can I verify William Joseph Alfieri, DC's license?
NPPES lists Michigan license number WM004080, as entered by the provider. Search the Michigan board that licenses this profession; the NPPES record confirms identity 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.