MR. WILLIAM JOSEPH ALFIERI DC
NPI 1437143203
Chiropractor in Portage, MI
About Mr. William Joseph Alfieri Dc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
MR. WILLIAM JOSEPH ALFIERI DC (NPI 1437143203) is an individual chiropractor in Portage, Michigan, licensed in Michigan (WM004080) and active in the NPI registry since September 2005. He is a graduate of Palmer College Chiropractic - Davenport (1979).
NPPES Registry Identity
Specialties & Licenses
Other Identifiers 7
Accepted Insurance
Medicare Participation & PECOS CMS
Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.
Medicare Enrollment Status
Enrolled in Medicare and accepts Medicare assignment
Mr. William Joseph Alfieri Dc is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.
Medicare Billing Reassignment
Medicare enrollment records show William Alfieri reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.
Portage, MI 49024
- Reassigned Medicare billing, Michigan enrollment
- Medicare enrollment name: William J Alfieri Dc PC
- 2 clinicians in this Medicare group
Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.
Areas of Expertise CMS Part B claims
Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.
Other Providers at the Same Location NPPES 2
Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.
Frequently Asked Questions NPPES & CMS
Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.
What is William Alfieri's NPI number?
The NPI number for William Alfieri is 1437143203. It was assigned to this individual provider in the NPPES registry on September 7, 2005.
Where is William Alfieri located?
William Alfieri practices at 925 W Milham Ave, Portage, MI 49024. The listed phone number is (269) 327-8990.
What is William Alfieri's specialty?
The primary specialty registered for this NPI is Chiropractor with taxonomy code 111N00000X.
Is William Alfieri enrolled in Medicare?
Yes. William Alfieri is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.
Which organization bills Medicare for William Alfieri's services?
According to the CMS Revalidation Reassignment List (October 2026 release), William Alfieri reassigns Medicare benefits to William J Alfieri D.C., P.C. (Portage, MI). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for William Alfieri's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.
What insurance does William Alfieri accept?
Health plans from Blue Care Network of Michigan, Blue Cross Blue Shield of Michigan Mutual Insurance Company, Priority Health, Providence Health Plan and UnitedHealthcare list William Alfieri as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.
When was this NPI record last updated?
The NPPES record for William Alfieri was last updated on March 14, 2008. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 18 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.
# Mr. William Joseph Alfieri, DC · NPI 1437143203
Chiropractor provider in Portage, Michigan. Individual provider, active in the CMS NPPES registry since September 7, 2005.
## Identity
- **NPI:** 1437143203 (Entity type: Individual)
- **Enumerated:** September 7, 2005
- **Primary specialty:** Chiropractor · taxonomy 111N00000X
- **State license:** WM004080 (Michigan)
- **Sole proprietor:** No
## Practice location
- **Address:** 925 W MILHAM AVE, Portage, MI 49024-1248
- **Phone:** (269) 327-8990 · **Fax:** (269) 327-6214
## Medicare
- **Medicare:** Enrolled (PECOS); accepts Medicare assignment
- **Bills Medicare through:** William J Alfieri D.C., P.C. (NPI 1598987604, Portage, MI), under Medicare reassignment (form CMS-855R) · CMS Revalidation Reassignment List, October 2026 release
- **Medical school:** Palmer College Chiropractic - Davenport, class of 1979
## Record status
- **NPPES last updated:** March 14, 2008
- **Other identifiers:** Other C95034001; Other 764733; Medicare UPIN T32960; and 4 more
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Source: [NPI Profile](https://npiprofile.com/npi/1437143203) · Data from the CMS NPPES public registry.