Janet Horenstein, MD
NPI 1588759062 · Maternal & Fetal Medicine Physician · Los Angeles, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Janet Horenstein, MD is a Maternal & Fetal Medicine Physician provider in Los Angeles, CA (NPI 1588759062).
Provider details
- NPI number
- 1588759062
- Entity type
- Individual
- Primary specialty
- Maternal & Fetal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- A35255 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
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
Mailing address
Registry dates
- Enumerated
- 2006-10-03
- Last updated
- 2007-07-08
Frequently asked questions
- What is Janet Horenstein's NPI number?
- Janet Horenstein's National Provider Identifier (NPI) is 1588759062, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Janet Horenstein's specialty?
- Janet Horenstein is listed in the NPPES registry with a primary specialty of Maternal & Fetal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Janet Horenstein located?
- Janet Horenstein's practice location on file with NPPES is 1400 S. Grand Avenue, Los Angeles, CA 90015.
- What is Janet Horenstein's phone number?
- The practice phone number listed in the NPPES registry for Janet Horenstein is (213) 741-1406.
- Does Janet Horenstein accept Medicare?
- Janet Horenstein is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Janet Horenstein's NPI active?
- Yes — Janet Horenstein's NPI (1588759062) is active in the NPPES registry as of the last update on 2007-07-08.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.