Horizon Services Inc.
NPI 1598518680 · Substance Use Disorder Rehabilitation Clinic/Center · San Mateo, CA
Horizon Services Inc. is a Substance Use Disorder Rehabilitation Clinic/Center organization in San Mateo, CA (NPI 1598518680).
Provider details
- NPI number
- 1598518680
- Entity type
- Organization
- Primary specialty
- Substance Use Disorder Rehabilitation Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Hieu Nguyen, Sud Counselor(650) 513-6500
Specialties & taxonomies
Ambulatory Health Care Facilities
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
- 2024-04-09
- Last updated
- 2024-04-09
- Certified
- 2023-09-07
Frequently asked questions
- What is Horizon Services Inc.'s NPI number?
- Horizon Services Inc.'s National Provider Identifier (NPI) is 1598518680, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Horizon Services Inc.?
- Horizon Services Inc. is classified in the NPPES registry as Substance Use Disorder Rehabilitation Clinic/Center (Ambulatory Health Care Facilities).
- Where is Horizon Services Inc. located?
- Horizon Services Inc.'s practice location on file with NPPES is 2251 Palm Ave, San Mateo, CA 94403-1814.
- What is Horizon Services Inc.'s phone number?
- The practice phone number listed in the NPPES registry for Horizon Services Inc. is (650) 513-6500.
- Who is the authorized official for Horizon Services Inc.?
- The authorized official listed on Horizon Services Inc.'s NPPES record is Hieu Nguyen, Sud Counselor. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Horizon Services Inc.'s NPI active?
- Yes — Horizon Services Inc.'s NPI (1598518680) is active in the NPPES registry as of the last update on 2024-04-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.