John Mathews, RRW
NPI 1457798894 · Addiction (Substance Use Disorder) Counselor · Sacramento, CA
John Mathews, RRW is a Addiction (Substance Use Disorder) Counselor provider in Sacramento, CA (NPI 1457798894).
Provider details
- NPI number
- 1457798894
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- RRW
- Sex
- Male
- Sole proprietor
- No
- License
- RW5456 (CA)
Specialties & taxonomies
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
13 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
- 2013-05-24
- Last updated
- 2013-05-24
Frequently asked questions
- What is John Mathews's NPI number?
- John Mathews's National Provider Identifier (NPI) is 1457798894, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is John Mathews's specialty?
- John Mathews is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is John Mathews located?
- John Mathews's practice location on file with NPPES is 2515 48th Ave, Sacramento, CA 95822-3810.
- What is John Mathews's phone number?
- The practice phone number listed in the NPPES registry for John Mathews is (916) 394-2328.
- Is John Mathews's NPI active?
- Yes — John Mathews's NPI (1457798894) is active in the NPPES registry as of the last update on 2013-05-24.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.