IRONSTONE MEDICAL CLINIC INC
NPI 1851587448
General Practice in Riverside, CA
About Ironstone Medical Clinic Inc NPPES
Official registry information on file with the National Plan and Provider Enumeration System.
IRONSTONE MEDICAL CLINIC INC (NPI 1851587448) is a healthcare organization registered as a general practice in Riverside, California and active in the NPI registry since September 2007. The organization holds a CLIA Waiver certificate valid through May 20, 2028 and lists Sean Ataee, C.f.o., as its authorized official.
NPPES Registry Identity
Specialties & Licenses 3
Medicare Participation & PECOS CMS
Medicare enrollment and the clinicians who bill Medicare through this organization, from CMS.
Medicare Enrollment Status
Enrolled in Medicare (PECOS)
Ironstone Medical Clinic Inc is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).
Clinicians Billing Medicare Through This Organization
2Medicare enrollment records show 2 clinicians reassign Medicare billing to Ironstone Medical Clinic Inc, which bills Medicare for the services they deliver. Of these, 1 practice at this address. They are listed nearest first.
Clinicians, nearest first (2)
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 05D1084366
Ironstone Medical Clinic Inc · Riverside, CAFrequently 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 Ironstone Medical Clinic Inc's NPI number?
The NPI number for Ironstone Medical Clinic Inc is 1851587448. It was assigned to this organization in the NPPES registry on September 18, 2007.
Where is Ironstone Medical Clinic Inc located?
Ironstone Medical Clinic Inc is located at 4121 Brockton Ave Ste 104, Riverside, CA 92501. The listed phone number is (949) 355-4224.
What is Ironstone Medical Clinic Inc's specialty?
The primary specialty registered for this NPI is General Practice with taxonomy code 208D00000X.
Is Ironstone Medical Clinic Inc enrolled in Medicare?
Yes. Ironstone Medical Clinic Inc is registered in the Medicare PECOS enrollment system.
How many clinicians bill Medicare through Ironstone Medical Clinic Inc?
According to the CMS Revalidation Reassignment List (October 2026 release), 2 clinicians reassign their Medicare billing to Ironstone Medical Clinic Inc, in Critical Care (Intensivists) and Physical Therapist in Private Practice. 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.
Does Ironstone Medical Clinic Inc hold a CLIA laboratory certificate?
Yes. A Certificate of Waiver (number 05D1084366) is associated with this NPI, valid through May 20, 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 Ironstone Medical Clinic Inc was last updated on October 3, 2011. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 15 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.
# Ironstone Medical Clinic Inc · NPI 1851587448
General Practice organization in Riverside, California. Organization record, active in the CMS NPPES registry since September 18, 2007.
## Identity
- **NPI:** 1851587448 (Entity type: Organization)
- **Enumerated:** September 18, 2007
- **Primary specialty:** General Practice · taxonomy 208D00000X
- **Organization subpart:** No
- **Authorized official:** Sean Ataee, C.F.O.
## Practice location
- **Address:** 4121 BROCKTON AVE STE 104, Riverside, CA 92501-3442
- **Phone:** (949) 355-4224 · **Fax:** (951) 778-0051
## Medicare
- **Medicare:** Enrolled in Medicare (PECOS)
- **Clinicians billing through this organization:** 2 clinicians in 2 Medicare specialties reassign Medicare billing to this organization (form CMS-855R); largest: Critical Care (Intensivists) (1), Physical Therapist in Private Practice (1); 1 practice at this address · CMS Revalidation Reassignment List, October 2026 release
## Record status
- **NPPES last updated:** October 3, 2011
- **CLIA laboratory certificates:** 1 on file
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Source: [NPI Profile](https://npiprofile.com/npi/1851587448) · Data from the CMS NPPES public registry.