Harold Maxfield, SUD #15799
NPI 1790550093 · Addiction (Substance Use Disorder) Counselor · San Leandro, CA
Harold Maxfield, SUD #15799 is a Addiction (Substance Use Disorder) Counselor provider in San Leandro, CA (NPI 1790550093).
Provider details
- NPI number
- 1790550093
- Entity type
- Individual
- Primary specialty
- Addiction (Substance Use Disorder) CounselorBehavioral Health & Social Service Providers
- Credential
- SUD #15799
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1306216692 (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
2 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
- 2023-11-17
- Last updated
- 2023-11-17
- Certified
- 2023-11-16
Frequently asked questions
- What is Harold Maxfield's NPI number?
- Harold Maxfield's National Provider Identifier (NPI) is 1790550093, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Harold Maxfield's specialty?
- Harold Maxfield is listed in the NPPES registry with a primary specialty of Addiction (Substance Use Disorder) Counselor (Behavioral Health & Social Service Providers).
- Where is Harold Maxfield located?
- Harold Maxfield's practice location on file with NPPES is 2035 Fairmont Dr, San Leandro, CA 94578-1088.
- What is Harold Maxfield's phone number?
- The practice phone number listed in the NPPES registry for Harold Maxfield is (510) 346-7836.
- Is Harold Maxfield's NPI active?
- Yes — Harold Maxfield's NPI (1790550093) is active in the NPPES registry as of the last update on 2023-11-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.