William J Alfieri D.C., P.C.
NPI 1598987604 · Chiropractor · Portage, MI
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William J Alfieri D.C., P.C. is a Chiropractor organization in Portage, MI (NPI 1598987604).
Provider details
- NPI number
- 1598987604
- Entity type
- Organization
- Primary specialty
- ChiropractorChiropractic Providers
- Organization subpart
- No
- Authorized official
- William Alfieri, President(269) 327-8990
- License
- WM004080 (MI)
Specialties & taxonomies
Chiropractic Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
Practice location
Mailing address
Other names (DBA / former)
- Doing business as
- Alfieri Chiropractic Clinic
Registry dates
- Enumerated
- 2007-05-02
- Last updated
- 2008-03-14
Frequently asked questions
- What is William J Alfieri D.C., P.C.'s NPI number?
- William J Alfieri D.C., P.C.'s National Provider Identifier (NPI) is 1598987604, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is William J Alfieri D.C., P.C.?
- William J Alfieri D.C., P.C. is classified in the NPPES registry as Chiropractor (Chiropractic Providers).
- Where is William J Alfieri D.C., P.C. located?
- William J Alfieri D.C., P.C.'s practice location on file with NPPES is 925 W Milham Ave, Portage, MI 49024-1248.
- What is William J Alfieri D.C., P.C.'s phone number?
- The practice phone number listed in the NPPES registry for William J Alfieri D.C., P.C. is (269) 327-8990.
- Does William J Alfieri D.C., P.C. accept Medicare?
- William J Alfieri D.C., P.C. is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for William J Alfieri D.C., P.C.?
- The authorized official listed on William J Alfieri D.C., P.C.'s NPPES record is William Alfieri, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is William J Alfieri D.C., P.C.'s NPI active?
- Yes — William J Alfieri D.C., P.C.'s NPI (1598987604) is active in the NPPES registry as of the last update on 2008-03-14.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.