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Yael Steinfeld, NP
NPI 1003975731 · Nurse Practitioner · Fontana, CA
Yael Steinfeld, NP is a Nurse Practitioner provider in Fontana, CA (NPI 1003975731).
Provider details
- NPI number
- 1003975731
- Entity type
- Individual
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- NP
- Sex
- Female
- Sole proprietor
- No
- License
- NP9686 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
Detailed profile(90/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 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
9961 Sierra Ave
Fontana, CA 92335-6720
Phone: (909) 427-3910
Street-level locationGet directions
Mailing address
393 E Walnut St
Pasadena, CA 91188-0001
Registry dates
- Enumerated
- 2006-12-08
- Last updated
- 2007-11-30
Frequently asked questions
- What is Yael Steinfeld's NPI number?
- Yael Steinfeld's National Provider Identifier (NPI) is 1003975731, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Yael Steinfeld's specialty?
- Yael Steinfeld is listed in the NPPES registry with a primary specialty of Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Yael Steinfeld located?
- Yael Steinfeld's practice location on file with NPPES is 9961 Sierra Ave, Fontana, CA 92335-6720.
- What is Yael Steinfeld's phone number?
- The practice phone number listed in the NPPES registry for Yael Steinfeld is (909) 427-3910.
- Is Yael Steinfeld's NPI active?
- Yes — Yael Steinfeld's NPI (1003975731) is active in the NPPES registry as of the last update on 2007-11-30.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.