William Mahaffey
NPI 1588103485 · Professional Counselor · Chillicothe, OH
Enrolled with Medicare as Practitioner - Mental Health Counselor · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Mahaffey is a Professional Counselor provider in Chillicothe, OH (NPI 1588103485).
Provider details
- NPI number
- 1588103485
- Entity type
- Individual
- Primary specialty
- Professional CounselorBehavioral Health & Social Service Providers
- Sex
- Male
- Sole proprietor
- No
- License
- S.1700038 (OH)
Specialties & taxonomies
Behavioral Health & Social Service Providers
Behavioral Health & Social Service Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 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
Registry dates
- Enumerated
- 2017-02-13
- Last updated
- 2024-08-21
- Certified
- 2024-08-21
Frequently asked questions
- What is William Mahaffey's NPI number?
- William Mahaffey's National Provider Identifier (NPI) is 1588103485, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Mahaffey's specialty?
- William Mahaffey is listed in the NPPES registry with a primary specialty of Professional Counselor (Behavioral Health & Social Service Providers).
- Where is William Mahaffey located?
- William Mahaffey's practice location on file with NPPES is 4449 State Route 159, Chillicothe, OH 45601-8620.
- What is William Mahaffey's phone number?
- The practice phone number listed in the NPPES registry for William Mahaffey is (740) 775-1260.
- Does William Mahaffey accept Medicare?
- William Mahaffey is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Mahaffey's NPI active?
- Yes — William Mahaffey's NPI (1588103485) is active in the NPPES registry as of the last update on 2024-08-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.