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PREMIER HOSPITALIST GROUP OF CALIFORNIA
NPI 1619216553
Hospitalist in Upland, CA

Active since February 13, 2013
901 SAN BERNARDINO RD, SUITE 101, UPLAND, CA 91786(562) 236-3432 Get Directions Write a Review

NPPES record last updated: July 19, 2019. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Premier Hospitalist Group Of California NPPES

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

PREMIER HOSPITALIST GROUP OF CALIFORNIA (NPI 1619216553) is a healthcare organization registered as a hospitalist in Upland, California and active in the NPI registry since February 2013. The organization lists Ythanh Nguyen, President, as its authorized official.

NPPES Registry Identity

NPI1619216553
Entity TypeOrganization
Primary Taxonomy208M00000X
Legal Business NamePREMIER HOSPITALIST GROUP INC
Location Address901 SAN BERNARDINO RD, SUITE 101Upland, CA 91786-4912
Mailing Address8816 Foothill Blvd Ste 103Rancho Cucamonga, CA 91730-7199 · (909) 579-6753 · Fax (909) 694-1045
Phone(562) 236-3432
Organization SubpartNo
Authorized OfficialYthanh NguyenPresident · (909) 579-6753
Enumeration DateFebruary 13, 2013
Last NPPES UpdateJuly 19, 2019
✔ NPI 1619216553 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyHospitalistAllopathic & Osteopathic Physicians
Taxonomy Code208M00000X
Definition
Hospitalists are physicians whose primary professional focus is the general medical care of hospitalized patients. Their activities include patient care, teaching, research, and leadership related to Hospital Medicine. The term 'hospitalist' refers to physicians whose practice emphasizes providing care for hospitalized patients.
901 SAN BERNARDINO RD, Upland, CA 91786
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Other Names 1

Doing Business AsPremier Hospitalist Group Of California

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)

Premier Hospitalist Group Of California is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

6

Medicare enrollment records show 6 clinicians reassign Medicare billing to Premier Hospitalist Group Of California, which bills Medicare for the services they deliver. Of these, 2 practice at this address and 4 within 10 miles. They are listed nearest first.

Clinicians, nearest first (6)

Sadia Moinuddin, MD
Internal Medicine
NPI 1912293317
901 SAN BERNARDINO RD STE 101
Upland, CA 91786
(909) 579-6753
✔ PECOS✔ Accepts MedicareSame address
Sara Khan, MD
Internal Medicine
NPI 1033253414
999 SAN BERNARDINO RD
Upland, CA 91786
(909) 985-2811
✔ PECOS✔ Accepts MedicareSame address
Bilal Rayes, MD
Hospitalist
NPI 1619095841
999 SAN BERNARDINO RD
Upland, CA 91786
(562) 236-2999
✔ PECOS✔ Accepts Medicare0.1 mi
Ythanh Nguyen, MD
Internal Medicine
NPI 1255391181
8235 ROCHESTER AVE
Rancho Cucamonga, CA 91730
(909) 484-4900
✔ PECOS5.5 mi
Neiveen Peter, M.D.
Internal Medicine
NPI 1295013951
1509 WILSON TER
Glendale, CA 91206
(818) 416-6338
✔ PECOS✔ Accepts Medicare34 mi
Ali Alktaifi, M.D.
Internal Medicine
NPI 1285997627
7500 RIALTO BLVD STE 1-140
Austin, TX 78735
(512) 730-3056
✔ PECOS✔ Accepts Medicare1,186 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 Premier Hospitalist Group Inc's NPI number?

The NPI number for Premier Hospitalist Group Inc is 1619216553. It was assigned to this organization in the NPPES registry on February 13, 2013. The provider is doing business as Premier Hospitalist Group Of California.

Where is Premier Hospitalist Group Inc located?

Premier Hospitalist Group Inc is located at 901 San Bernardino Rd Suite 101, Upland, CA 91786. The listed phone number is (562) 236-3432.

What is Premier Hospitalist Group Inc's specialty?

The primary specialty registered for this NPI is Hospitalist with taxonomy code 208M00000X.

Is Premier Hospitalist Group Inc enrolled in Medicare?

Yes. Premier Hospitalist Group Inc is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Premier Hospitalist Group Inc?

According to the CMS Revalidation Reassignment List (October 2026 release), 6 clinicians in 2 Medicare specialties reassign their Medicare billing to Premier Hospitalist 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. The largest specialties are Internal Medicine (5) and Hospitalist (1). Of these, 2 practice at this address and 4 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 Premier Hospitalist Group Inc was last updated on July 19, 2019. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 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.