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THE MAVEN GROUP INC.
NPI 1487323572
Obstetrics & Gynecology in Rialto, CA

Active since September 10, 2021CLIA 05D2267484 · Waiver
1850 N RIVERSIDE AVE, RIALTO, CA 92376(909) 787-1987(877) 533-0133 Get Directions Write a Review

NPPES record last updated: January 11, 2023. Verified against the NPPES registry weekly; last sync: November 08, 2026.

Record update history: Jan 11, 2023, Jan 20, 2022, Nov 2, 2021 and 2 more (5 updates tracked since 2021).

About The Maven Group Inc. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

THE MAVEN GROUP INC. (NPI 1487323572) is a healthcare organization registered as an obstetrics & gynecology in Rialto, California and active in the NPI registry since September 2021. The organization holds a CLIA Waiver certificate valid through August 24, 2028 and lists Nadine Lyseight, Executive Chief Office, as its authorized official.

NPPES Registry Identity

NPI1487323572
Entity TypeOrganization
Primary Taxonomy207V00000X
Legal Business NameTHE MAVEN GROUP INC.
Location Address1850 N RIVERSIDE AVERialto, CA 92376-8071
Mailing Address1850 N Riverside Ave Ste 180Rialto, CA 92376-8071 · (909) 787-1987 · Fax (877) 553-0133
Phone(909) 787-1987
Fax(877) 533-0133
Organization SubpartNo
Authorized OfficialNadine LyseightExecutive Chief Office · (909) 787-1987
Enumeration DateSeptember 10, 2021
Last NPPES UpdateJanuary 11, 20235 updates tracked since enumeration
NPPES CertifiedJanuary 11, 2023
✔ NPI 1487323572 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
1850 N RIVERSIDE AVE, Rialto, CA 92376
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Group Practice 1

Group TaxonomyThis provdier is a business group of one or more individual practitioners, all of who practice with the same area of specialization.193400000X SINGLE SPECIALTY GROUP

Medicare Participation & PECOS CMS

Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

The Maven Group Inc. is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

Medicare enrollment records show 1 clinician reassigns Medicare billing to The Maven Group Inc., which bills Medicare for the services this clinician delivers.

Clinician (1)

Nadine Lyseight, M.D.
Obstetrics/Gynecology
NPI 1790785046
1850 N RIVERSIDE AVE STE 180
Rialto, CA 92376
(909) 787-1987
✔ PECOSSame address

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

CLIA Laboratory Certificates CMS CLIA

Laboratory certificates issued under the Clinical Laboratory Improvement Amendments (CLIA) program, which sets federal quality standards for human laboratory testing in the United States. There is no official CMS crosswalk between CLIA and NPI numbers; these certificates are associated with this NPI by matching facility names, locations and phone numbers in the CMS CLIA registry.

Certificate of Waiver 05D2267484

The Maven Group Inc · Rialto, CA
Active · expires Aug 24, 2028
CLIA Number05D2267484
Laboratory TypePhysician Office
Certificate Effective DateAugust 25, 2026
Certificate Expiration DateAugust 24, 2028
Laboratory DirectorNadine Lyseight
Laboratory Phone(909) 787-1987
Laboratory LocationThe Maven Group Inc1850 N Riverside Ave Ste 180, Rialto, CA 92376
CLIA data matches this NPI record on: Address Name Phone
This certificate is issued to a laboratory to perform only waived tests.

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is The Maven Group Inc.'s NPI number?

The NPI number for The Maven Group Inc. is 1487323572. It was assigned to this organization in the NPPES registry on September 10, 2021.

Where is The Maven Group Inc. located?

The Maven Group Inc. is located at 1850 N Riverside Ave, Rialto, CA 92376. The listed phone number is (909) 787-1987.

What is The Maven Group Inc.'s specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is The Maven Group Inc. enrolled in Medicare?

Yes. The Maven Group Inc. is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through The Maven Group Inc.?

According to the CMS Revalidation Reassignment List (October 2026 release), 1 clinician (Obstetrics/Gynecology) reassigns their Medicare billing to The Maven Group Inc.. A reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for the clinician's services. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Does The Maven Group Inc. hold a CLIA laboratory certificate?

Yes. A Certificate of Waiver (number 05D2267484) is associated with this NPI, valid through August 24, 2028. CLIA certificates authorize laboratory testing under the federal Clinical Laboratory Improvement Amendments program.

When was this NPI record last updated?

The NPPES record for The Maven Group Inc. was last updated on January 11, 2023. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.