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SIERRA RHEUMATOLOGY INC, A PROFESSIONAL CORPORATION
NPI 1548564735
Internal Medicine - Rheumatology in Rocklin, CA

Active since January 02, 2011
2207 PLAZA DR STE 100, ROCKLIN, CA 95765(916) 677-4744(916) 781-2029 Get Directions Write a Review

NPPES record last updated: March 30, 2026. Verified against the NPPES registry weekly; last sync: October 25, 2026.

About Sierra Rheumatology Inc, A Professional Corporation NPPES

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

SIERRA RHEUMATOLOGY INC, A PROFESSIONAL CORPORATION (NPI 1548564735) is a healthcare organization registered as a rheumatology in Rocklin, California and active in the NPI registry since January 2011. The organization lists Robinder Jeet Singh Dhillon, Managing Director, as its authorized official.

NPPES Registry Identity

NPI1548564735
Entity TypeOrganization
Primary Taxonomy207RR0500X
Legal Business NameSIERRA RHEUMATOLOGY INC, A PROFESSIONAL CORPORATION
Location Address2207 PLAZA DR STE 100Rocklin, CA 95765-4415
Mailing Address2207 Plaza Dr Ste 100Rocklin, CA 95765-4415 · (916) 677-4744 · Fax (916) 781-2029
Phone(916) 677-4744
Fax(916) 781-2029
Organization SubpartNo
Authorized OfficialRobinder Jeet Singh DhillonManaging Director · (916) 677-4744
Enumeration DateJanuary 2, 2011
Last NPPES UpdateMarch 30, 2026
NPPES CertifiedMarch 30, 2026
✔ NPI 1548564735 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal Medicine · RheumatologyAllopathic & Osteopathic Physicians
Taxonomy Code207RR0500X
License✔ Licensed in CA · A97133
Definition
An internist who treats diseases of joints, muscle, bones and tendons. This specialist diagnoses and treats arthritis, back pain, muscle strains, common athletic injuries and collagen diseases.
2207 PLAZA DR STE 100, Rocklin, CA 95765
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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

Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Alliant Health Plans, Inc., Ambetter from Absolute Total Care, Ambetter from Arkansas Health & Wellness and more.Insurance ›

Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Sierra Rheumatology Inc, A Professional Corporation is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

Clinicians Billing Medicare Through This Organization

2

Medicare enrollment records show 2 clinicians reassign Medicare billing to Sierra Rheumatology Inc, A Professional Corporation, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.

Clinicians, nearest first (2)

Ravneet Dhillon, MBBS
Emergency Medicine
NPI 1740422344
2207 PLAZA DR STE 100
Rocklin, CA 95765
(585) 520-5353
✔ PECOSSame address
Robinder Dhillon, M.D., M.B.A.
Rheumatology
NPI 1841557477
10390 COLOMA RD STE B
Rancho Cordova, CA 95670
(916) 363-2229
✔ PECOS✔ Accepts Medicare14 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 Sierra Rheumatology Inc, A Professional Corporation's NPI number?

The NPI number for Sierra Rheumatology Inc, A Professional Corporation is 1548564735. It was assigned to this organization in the NPPES registry on January 2, 2011.

Where is Sierra Rheumatology Inc, A Professional Corporation located?

Sierra Rheumatology Inc, A Professional Corporation is located at 2207 Plaza Dr Ste 100, Rocklin, CA 95765. The listed phone number is (916) 677-4744.

What is Sierra Rheumatology Inc, A Professional Corporation's specialty?

The primary specialty registered for this NPI is Internal Medicine, specializing in Rheumatology, with taxonomy code 207RR0500X.

Is Sierra Rheumatology Inc, A Professional Corporation enrolled in Medicare?

Yes. Sierra Rheumatology Inc, A Professional Corporation is registered in the Medicare PECOS enrollment system.

How many clinicians bill Medicare through Sierra Rheumatology Inc, A Professional Corporation?

According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Sierra Rheumatology Inc, A Professional Corporation, in Emergency Medicine and Rheumatology. 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. Of these, 1 practice at this address. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

What insurance does Sierra Rheumatology Inc, A Professional Corporation accept?

Health plans from Alliant Health Plans, Inc., Ambetter Health, Ambetter Health of Delaware, Ambetter from Absolute Total Care and Ambetter from Arkansas Health & Wellness and 25 other insurers list Sierra Rheumatology Inc, A Professional Corporation as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

When was this NPI record last updated?

The NPPES record for Sierra Rheumatology Inc, A Professional Corporation was last updated on March 30, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 7 months 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.