Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

INLAND EMPIRE MULTISPECIALTY GROUP PC
NPI 1891364576
Specialist in Riverside, CA

Active since June 17, 2021
9939 MAGNOLIA AVE, RIVERSIDE, CA 92503(951) 323-7568(951) 394-0685 Get Directions Write a Review

NPPES record last updated: September 11, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Sep 11, 2026, May 2, 2022, Mar 4, 2022 and 7 more (10 updates tracked since 2021).

About Inland Empire Multispecialty Group Pc NPPES

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

INLAND EMPIRE MULTISPECIALTY GROUP PC (NPI 1891364576), doing business as Riverside Multispecialty Medical Group, is a healthcare organization registered as a specialist in Riverside, California and active in the NPI registry since June 2021. The organization lists Yara Villanueva, Senior Manager, as its authorized official.

NPPES Registry Identity

NPI1891364576
Entity TypeOrganization
Primary Taxonomy174400000X
Legal Business NameINLAND EMPIRE MULTISPECIALTY GROUP PC
Location Address9939 MAGNOLIA AVERiverside, CA 92503-3528
Mailing Address495 E Rincon St Ste 208Corona, CA 92879-1379 · (951) 354-3221 · Fax (951) 394-0685
Fax(951) 394-0685
Organization SubpartNo
Authorized OfficialYara VillanuevaSenior Manager · (951) 354-3221
Enumeration DateJune 17, 2021
Last NPPES UpdateSeptember 11, 202610 updates tracked since enumeration
NPPES CertifiedSeptember 11, 2026
✔ NPI 1891364576 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtySpecialistOther Service Providers
Taxonomy Code174400000X
Definition
An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.
Also ListedInternal Medicine · NephrologyTaxonomy 207RN0300X
Also ListedObstetrics & GynecologyTaxonomy 207V00000X
9939 MAGNOLIA AVE, Riverside, CA 92503

Other Names 1

Doing Business AsRiverside Multispecialty Medical Group

Group Practice 1

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-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)

Inland Empire Multispecialty Group Pc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

10

Medicare enrollment records show 10 clinicians reassign Medicare billing to Inland Empire Multispecialty Group PC, which bills Medicare for the services they deliver. Of these, 6 practice at this address and 7 within 10 miles. They are listed nearest first.

Clinicians by Medicare Specialty 4

Obstetrics/Gynecology7
Family Practice1
Nephrology1
Nurse Practitioner1

Clinicians, nearest first (10)

Nephrology
NPI 1396285698
9939 MAGNOLIA AVE
Riverside, CA 92503
(855) 745-8600
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1649709726
9939 MAGNOLIA AVE
Riverside, CA 92503
(951) 354-2229
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1215467717
9939 MAGNOLIA AVE
Riverside, CA 92503
(951) 354-2229
✔ PECOSSame address
Obstetrics/Gynecology
NPI 1770888505
9939 MAGNOLIA AVE
Riverside, CA 92503
(951) 354-2229
✔ PECOSSame address
Obstetrics/Gynecology
NPI 1891062998
9939 MAGNOLIA AVE
Riverside, CA 92503
(951) 354-2229
✔ PECOS✔ Accepts MedicareSame address
Family Practice
NPI 1639246176
9939 MAGNOLIA AVE
Riverside, CA 92503
(855) 505-7467
✔ PECOS✔ Accepts MedicareSame address
Obstetrics/Gynecology
NPI 1063464089
4646 BROCKTON AVE STE 302-5
Riverside, CA 92506
(951) 900-1201
✔ PECOS✔ Accepts Medicare5.7 mi
Obstetrics/Gynecology
NPI 1083745178
16850 BEAR VALLEY RD
Victorville, CA 92395
(760) 241-8000
✔ PECOS✔ Accepts Medicare39 mi
Obstetrics/Gynecology
NPI 1659894673
2051 MARENGO ST
Los Angeles, CA 90033
(951) 233-2968
✔ PECOS✔ Accepts Medicare44 mi
Nurse Practitioner
NPI 1174238356
195 PAGE MILL RD STE 103
Palo Alto, CA 94306
(888) 731-8994
✔ PECOS✔ Accepts Medicare358 mi

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

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 Inland Empire Multispecialty Group PC's NPI number?

The NPI number for Inland Empire Multispecialty Group PC is 1891364576. It was assigned to this organization in the NPPES registry on June 17, 2021. The provider is doing business as Riverside Multispecialty Medical Group.

Where is Inland Empire Multispecialty Group PC located?

Inland Empire Multispecialty Group PC is located at 9939 Magnolia Ave, Riverside, CA 92503. The listed phone number is (951) 323-7568.

What is Inland Empire Multispecialty Group PC's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Inland Empire Multispecialty Group PC enrolled in Medicare?

Yes. Inland Empire Multispecialty Group PC is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Inland Empire Multispecialty Group PC?

According to the CMS Revalidation Reassignment List (October 2026 release), 10 clinicians in 4 Medicare specialties reassign their Medicare billing to Inland Empire Multispecialty Group PC. 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. The largest specialties are Obstetrics/Gynecology (7), Family Practice (1) and Nephrology (1). Of these, 6 practice at this address and 7 within 10 miles. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

When was this NPI record last updated?

The NPPES record for Inland Empire Multispecialty Group PC was last updated on September 11, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 50 days 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.