Mills Surgery Center
NPI 1912393737 · Ambulatory Surgical Clinic/Center · Ontario, CA
Mills Surgery Center is a Ambulatory Surgical Clinic/Center organization in Ontario, CA (NPI 1912393737).
Provider details
- NPI number
- 1912393737
- Entity type
- Organization
- Primary specialty
- Ambulatory Surgical Clinic/CenterAmbulatory Health Care Facilities
- Parent organization
- Mills Surgery Center LLC
- Organization subpart
- Yes
- Authorized official
- Gregory Lercel, Medical Director(626) 298-3123
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
11 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
- 2015-04-08
- Last updated
- 2015-04-08
Frequently asked questions
- What is Mills Surgery Center's NPI number?
- Mills Surgery Center's National Provider Identifier (NPI) is 1912393737, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Mills Surgery Center?
- Mills Surgery Center is classified in the NPPES registry as Ambulatory Surgical Clinic/Center (Ambulatory Health Care Facilities).
- Where is Mills Surgery Center located?
- Mills Surgery Center's practice location on file with NPPES is 4480 E. Mills Circle, Ontario, CA 91764-5206.
- What is Mills Surgery Center's phone number?
- The practice phone number listed in the NPPES registry for Mills Surgery Center is (909) 294-2033.
- Who is the authorized official for Mills Surgery Center?
- The authorized official listed on Mills Surgery Center's NPPES record is Gregory Lercel, Medical Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Mills Surgery Center's NPI active?
- Yes — Mills Surgery Center's NPI (1912393737) is active in the NPPES registry as of the last update on 2015-04-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.