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PREMIER MEDICAL GROUP OF CALIFORNIA
NPI 1629523014
Internal Medicine in Upland, CA

Active since August 16, 2016
901 SAN BERNARDINO RD, SUITE 101, UPLAND, CA 91786(562) 236-3432(888) 228-3419 Get Directions Write a Review

NPPES record last updated: June 24, 2021. Verified against the NPPES registry weekly; last sync: October 25, 2026.

Record update history: Jun 24, 2021, Nov 27, 2016, Aug 16, 2016 (3 updates tracked since 2016).

About Premier Medical Group Of California NPPES

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

PREMIER MEDICAL GROUP OF CALIFORNIA (NPI 1629523014) is a healthcare organization registered as an internal medicine in Upland, California and active in the NPI registry since August 2016. The organization lists Ythanh D Nguyen, Partner, as its authorized official.

NPPES Registry Identity

NPI1629523014
Entity TypeOrganization
Primary Taxonomy207R00000X
Legal Business NamePREMIER MEDICAL GROUP OF CALIFORNIA
Location Address901 SAN BERNARDINO RD, SUITE 101Upland, CA 91786-4912
Mailing Address8816 Foothill Blvd Ste 103Rancho Cucamonga, CA 91730-7199 · (562) 236-3432 · Fax (888) 228-3419
Phone(562) 236-3432
Fax(888) 228-3419
Organization SubpartNo
Authorized OfficialYthanh D NguyenPartner · (619) 993-0189
Enumeration DateAugust 16, 2016
Last NPPES UpdateJune 24, 20213 updates tracked since enumeration
NPPES CertifiedJune 24, 2021
✔ NPI 1629523014 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 3

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in CA · 546306
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
Also ListedInternal Medicine · Hospice and Palliative MedicineTaxonomy 207RH0002X
Also ListedPreventive Medicine · Obesity MedicineTaxonomy 2083B0002X
901 SAN BERNARDINO RD, Upland, CA 91786
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Group Practice 2

Group TaxonomyThis provider is a business group of one or more individual practitioners, who practice with different areas of specialization.193200000X MULTI-SPECIALTY GROUP
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 Medical Group Of California is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

4

Medicare enrollment records show 4 clinicians reassign Medicare billing to Premier Medical 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 (4)

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

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 Medical Group Of California's NPI number?

The NPI number for Premier Medical Group Of California is 1629523014. It was assigned to this organization in the NPPES registry on August 16, 2016.

Where is Premier Medical Group Of California located?

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

What is Premier Medical Group Of California's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Premier Medical Group Of California enrolled in Medicare?

Yes. Premier Medical Group Of California is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Premier Medical Group Of California?

According to the CMS Revalidation Reassignment List (October 2026 release), 4 clinicians in 2 Medicare specialties reassign their Medicare billing to Premier Medical Group Of California. 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 (3) 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 Medical Group Of California was last updated on June 24, 2021. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 5 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.