OrganizationActive
Premise Health of California Medical, P.C
NPI 1588253017 · Clinic/Center · Ontario, CA
Premise Health of California Medical, P.C is a Clinic/Center organization in Ontario, CA (NPI 1588253017).
Provider details
- NPI number
- 1588253017
- Entity type
- Organization
- Primary specialty
- Clinic/CenterAmbulatory Health Care Facilities
- Organization subpart
- No
- Authorized official
- Jon Leizman, President(216) 479-9063
Specialties & taxonomies
Ambulatory Health Care Facilities
Profile Score
Established profile(63/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
5 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
1425 Toyota Way
Ontario, CA 91761-2203
Phone: (909) 975-7104
Street-level locationGet directions
Mailing address
5500 Maryland Way Ste 120
Brentwood, TN 37027-4993
Other names (DBA / former)
- Doing business as
- Napcc Nurse Office
Registry dates
- Enumerated
- 2021-01-11
- Last updated
- 2022-08-25
- Certified
- 2022-08-25
Frequently asked questions
- What is Premise Health of California Medical, P.C's NPI number?
- Premise Health of California Medical, P.C's National Provider Identifier (NPI) is 1588253017, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Premise Health of California Medical, P.C?
- Premise Health of California Medical, P.C is classified in the NPPES registry as Clinic/Center (Ambulatory Health Care Facilities).
- Where is Premise Health of California Medical, P.C located?
- Premise Health of California Medical, P.C's practice location on file with NPPES is 1425 Toyota Way, Ontario, CA 91761-2203.
- What is Premise Health of California Medical, P.C's phone number?
- The practice phone number listed in the NPPES registry for Premise Health of California Medical, P.C is (909) 975-7104.
- Who is the authorized official for Premise Health of California Medical, P.C?
- The authorized official listed on Premise Health of California Medical, P.C's NPPES record is Jon Leizman, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Premise Health of California Medical, P.C's NPI active?
- Yes — Premise Health of California Medical, P.C's NPI (1588253017) is active in the NPPES registry as of the last update on 2022-08-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.