IndividualActive
William Maxfield
NPI 1558528281 · Counselor · Chino, CA
William Maxfield is a Counselor provider in Chino, CA (NPI 1558528281).
Provider details
- NPI number
- 1558528281
- Entity type
- Individual
- Primary specialty
- CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
Specialties & taxonomies
Behavioral Health & Social Service Providers
Profile Score
Detailed profile(81/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 yrs in NPPES registry
- Profile completeness38% of score
83% 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
3683 Chino Ave
Chino, CA 91710-4719
Phone: (909) 628-1272
Street-level locationGet directions
Mailing address
3683 Chino Ave
Chino, CA 91710-4719
Registry dates
- Enumerated
- 2008-05-20
- Last updated
- 2008-05-20
Frequently asked questions
- What is William Maxfield's NPI number?
- William Maxfield's National Provider Identifier (NPI) is 1558528281, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Maxfield's specialty?
- William Maxfield is listed in the NPPES registry with a primary specialty of Counselor (Behavioral Health & Social Service Providers).
- Where is William Maxfield located?
- William Maxfield's practice location on file with NPPES is 3683 Chino Ave, Chino, CA 91710-4719.
- What is William Maxfield's phone number?
- The practice phone number listed in the NPPES registry for William Maxfield is (909) 628-1272.
- Is William Maxfield's NPI active?
- Yes — William Maxfield's NPI (1558528281) is active in the NPPES registry as of the last update on 2008-05-20.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.